
1 

(1) This Order may be cited as the Restrictive Trade Practices (Standards and Arrangements) Order 1990 and shall come into force on 11th April 1990.
(2) In this Order
 “the 1976 Act” means the Restrictive Trade Practices Act 1976;
 “arrangements” means, in respect of the production, supply or acquisition of any goods or the application to goods of any process of manufacture, arrangements as to the provision of information or advice to purchasers, consumers or users and, in respect of making available, supplying or obtaining any designated services within the meaning of the 1976 Act, arrangements as to the provision of information or advice to persons to or by whom designated services are supplied or agreed to be supplied;
 “standards” means, in respect of the production, supply or acquisition of any goods or the application to goods of any process of manufacture, standards of dimension, design, quality or performance and, in respect of making available, supplying or obtaining any designated services within the meaning of the 1976 Act, standards of performance in the provision of the services or standards of dimension, design, quality or performance in respect of goods used in providing them.
2 

(1) The standards specified in Part I of the Schedule to this Order, being standards adopted by Electricity Association Services Limited on 6th April 1990 are hereby approved for the purposes of sections 9(5) and 18(5) of the 1976 Act.
(2) The arrangements specified in Part II of the Schedule to this Order, being arrangements adopted by Electricity Association Services Limited on 6th April 1990, are hereby approved for the purposes of sections 9(5) and 18(5) of the 1976 Act.
John Redwood
Parliamentary Under Secretary of State,
Department of Trade and Industry
9th April 1990
SCHEDULE
Article 2
PART I
06-1 Safety belts, harnesses and associated equipment
 Issue 2, 1984
09-1 Lead sleeves for electric cables (metric units)
 Issue 1, 1970
09-2 The installation of 33kV and higher voltage power cables and associated auxiliary cables
 Issue 3, 1983
09-3 33kV impregnated paper insulated oil-filled and gas pressure type power cable systems
 Issue 2, 1982
09-4 66kV and 132kV impregnated paper insulated, oil-filled and gas pressure type power cable systems
 Issue 2, 1981
09-5 275kV and 400kV impregnated paper insulated, oil-filled and gas compression type power cable systems
 Issue 2, 1981
09-6 Auxiliary multicore and multipair cables
 Issue 6, 1988
09-7 PVC insulated concentric service cables with stranded copper or solid aluminium phase conductors and copper concentric conductors
 Issue 4, 1981
09-8 Impregnated paper insulated 600/1000 volt cable with three solid aluminium phase conductors and aluminium sheath/neutral conductor (Consac)
 Issue 4, 1977
09-9 Polymeric insulated, combined neutral/earth (CNE) cables with solid aluminium phase conductors and concentric aluminium wire waveform neutral/earth conductor
 Issue 5, 1981
09-10 Porcelain insulators for 33kV, 66kV 132kV, 275kV and 400kV pressure-assisted cable outdoor sealing ends
 Issue 1, 1976
09-11 Heat shrinkable insulating materials for use with 600/1000V cables and accessories
 Issue 1, 1975
09-12 Impregnated paper insulated corrugated aluminium sheathed 6350/11,000 volt cable
 Issue 1, 1979
09-13 Performance specification for high voltage heat shrinkable components for use with high voltage solid type cables up to and including 33,000 volts
 Issue 1, 1981
09-15 Jointing instructions and procedures for mass impregnated and mass impregnated non-draining paper insultated 19/33kV cables
 Part 1: Jointing instructions
 Issue 2, 1989
 Part 2: Jointing procedures
 Issue 2, 1989
09-16 Testing specification for metallic sheathed power cables with extruded cross-linked polyethylene insulation and accessories for system voltages of 66kV and 132kV
 Issue 1, 1983
09-17 Single core cables for use in substations having extruded insulation and a rated voltage of 6350/11,000 volts
 Issue 1, 1984
 Corrigendum 1, 1987
09-19 Synthetic hydrocarbon insulating oil for use in oil-filled pressure-assisted cables up to 132kV operating voltage
 Issue 1, 1986
09-20 33kV Single Core hv polymeric insulated cable
 Issue 1, 1990
12-3 Outdoor meter cupboards
 Issue 2, 1986
12-4 Terminating equipment for pilot cables subject to induced transient voltages exceeding 650V rms
 Issue 1, 1973
12-5 Indicating lamps-filament type
 Issue 1, 1972
12-6 Time fuse-links
 Issue 1, 1973
12-8 The application of fuse-links to 11kV/415V and 6.6kV/415V underground distribution networks
 Issue 2, 1986
12-9 Wiping glands for metallic-sheathed cables
 Issue 2, 1980
12-10 Single phase domestic cut outs up to 100A rating
 Issue 1, 1977
12-11 Indoor and outdoor cable boxes for switchgear
 Issue 2, 1981
12-12 Compounds for use in 33kV solid type cable accessories
 Issue 1, 1977
12-14 Impregnated crepe paper for cable jointing in solid type cable accessories
 Issue 1, 1976
12-15 Weak-back ferrules for electric power cable jointing on solid-type cables up to and including 11kV
 Issue 1, 1978
12-16 Fuse-switch trip testing device
 Issue 1, 1978
12-18 Polyester resin/glass fibre protection boxes and protective shrouds for oil-filled and gas-pressure cable accessories
 Issue 1, 1980
12-19 Single phase street lighting cut-outs-25A rating
 Issue 1, 1982
12-20 Low voltage pole-mounted fuses
 Issue 1, 1984
 Corrigendum 1, 1986
12-23 Polythene protection tape for buried electricity supply cable
 Issue 1, 1988
12-24 Plastic ducts for buried electric cables
 Issue 1, 1989
13-1 Portable glass fibre ladders and steps
 Issue 1, 1987
23-2 Code of practice for post weld heat treatment (electrical resistance heating elements)
 Issue 2, 1983
23-3 Titanium tubes for heat exchangers and condensers
 Issue 3, 1989
23-4 Seamless steel feed water heater tubes for high pressure applications
 Issue 2, 1989
26-1 Insulating foam-filled tube and solid rod for live working
 Issue 2, 1977
26-2 Insulating tools for live working on high voltage overhead lines
 Issue 1, 1978
26-3 Hand held tools for live low voltage working
 Issue 2, 1984
26-4 Overhead line conductor erection clamps-test specification and test certificates
 Issue 1, 1980
35-1 Distribution transformers (from 16kVA to 1000kVA)
 Issue 4, 1985
35-2 Emergency rated system transformers (35/11.5kV delta/star and star/star connected)
 Issue 4, 1982
35-5 Generator voltage transformers for 500/660 MW turbo-generators
 Issue 1, 1980
35-6 Generator voltage transformers for gas turbines
 Issue 1, 1980
35-14 Formel NF filled transformers
 Issue 1, 1984
37-1 415V ac switchgear, controlgear and fusegear
 Issue 2, 1977
37-2 L.V. distribution fuseboards
 Issue 2, 1984
37-3 A.C. metal-enclosed switchgear and controlgear of rated voltages 3.6kV and 12kV
 Part 1-Circuit breaker equipment (air-break)
 Issue 1, 1981
 Part 2-Fused switching device equipment of 3.6kV rated voltage
 Issue 1, 1981
41-1 3.3kV 150 MVA airbreak switchgear-floor details and building requirements
 Issue 1, 1969
41-2 11kV distribution switchgear (floor details)
 Issue 2, 1976
41-4 11kV 500 and 750 MVA airbreak switchgear floor details and building requirements
 Issue 1, 1970
41-5 Requirements for 12kV distribution metal-enclosed indoor switchgear
 Issue 3, 1983
41-6 132kV outdoor busbar type substations with aluminium connections
 Issue 1, 1974
41-7 132kV outdoor substations extensible up to four-switch mesh
 Issue 1, 1980
41-8 132kV compact transformer feeder substations
 Issue 1, 1980
 Amendment 1, 1988
41-9 Insulating oil handling and storage equipment for 132kV outdoor substations
 Issue 1, 1974
41-10 Switchgear for use on 66, 132, 275 and 400kV systems
 Issue 3, 1989
41-11 Tubular aluminium busbars, connections and terminal fittings for 132kV outdoor substations
 Issue 2, 1982
41-12 Non-extensible ring main equipments, (incorporating an automatic fuse-switch and switches ratings: 250 MVA at 11kV and 150 MVA at 6.6kV)
 Issue 2, 1975
 Corrigendum No. 1, 1987
41-13 Air break switch-disconnectors 12kV to 36kV for use on overhead lines
 Issue 1, 1978
41-15 Standard circuit diagrams for equipment in 132kV substations
 Part 1: Transformer feeder, transformer end
 Issue 1, 1978
 Part 2: Transformer feeder, transformer end 132/11/11kV dual secondary
 Issue 1, 1978
 Part 3: Arrangements for locally banking two transformers. Transformer end of a transformer-feeder
 Issue 1, 1982
 Part 4: 132kV busbar substation feeder-circuits
 Issue 1, 1983
 Part 5: Intertripping over voice frequency channels
 Issue 2, 1988
 Part 6: Standard circuit diagrams for equipment in 132kV substations. Bus-section and bus-coupler
 Issue 1, 1990
 Part 7: Arrangements for locally banking a transformer with a feeder at a busbar station
 Issue 1, 1988
 Part 8: 132kV busbar station-busbar protection
 Issue 1, 1986
 Part 9: Standard circuit diagrams for equipment in 132kV substations ac traction supplies to British Rail
 Issue 1, 1990
41-16 Apparatus terminations, conductor sizes and associated fittings (copper) used in outdoor and indoor substations with outdoor equipment
 Issue 2, 1981
41-18 Arrangements for partial discharge testing of bushings, capacitors, instrument transformers and switchgear of rated voltage 7.2-425kV inclusive
 Issue 1, 1988
41-19 Open type switchgear for use on 33kV systems
 Issue 1, 1979
41-21 Portable earthing equipment for open type hv apparatus in substations
 Issue 1, 1985
41-22 Metal-enclosed switch, switch-disconnector and earthing switch combinations (ratings 12.5, 16 and 20kA at 7.2kV and 12kV)
 Issue 1, 1982
41-23 Metal-enclosed automatic fuse-switch equipment (ratings 12.5, 16 and 20kA at 7.2kV and 12kV)
 Issue 1, 1982
43-1 Survey and preparation of ground line profiles and plotting of tower positions for steel tower overhead transmission lines at 132kV and higher voltages
 Issue 2, 1986
43-2 Design of steel tower overhead transmission lines at 132kV and higher voltages
 Issue 1, 1972
 Corrigendum 1989
43-3 Design of lattice steel transmission towers for overhead lines at 132kV and higher voltages
 Issue 1, 1972
43-4 Design of foundations for steel towers for overhead transmission lines at 132kV and higher voltages
 Issue 2, 1986
43-5 Fabrication and galvanising of tower and foundation steelwork for overhead transmission lines at 132kV and higher voltages
 Issue 2, 1986
 Corrigendum 1988
43-6 Construction of overhead transmission lines on steel towers for 132kV and higher voltages
 Issue 2, 1986
43-7 132kV steel tower transmission lines: Specification L4(M)-1978
 Issue 2, 1985
43-8 Overhead line clearances
 Issue 2, 1988
 Amendment 1989
43-9 132kV steel tower transmission lines specification L.7(C)-1978 2 x 175mm2 ACSR per phase-1 x 175mm2 ACSR earthwire
 Issue 1, 1986
43-11 400kV steel tower transmission lines-specification L.12 (2 x 700mm2 AAAC per phase) (1 x 425mm2 AAAC earthwire)
 Issue 1, 1984
43-12 Insulated aerial bundled conductors erection requirements for 1v overhead distribution systems
 Issue 1, 1986
 Corrigendum 1, 1987
 Corrigendum 2, 1988
43-13 Aerial bundled conductors (ABC) insulated with cross-linked polyethylene for low voltage overhead distribution
 Issue 1, 1986
 Corrigendum September 1987
43-14 Conductor fittings and associated apparatus for use with 1v aerial bundled conductors
 Issue 1, 1989
43-15 Insulator binds and equivalent helical fittings for overhead lines
 Issue 1, 1988
43-30 Low voltage overhead lines on wood poles
 Issue 2, 1981
43-40 High voltage single circuit overhead lines on wood poles
 Issue 1, 1988
43-50 132kV single circuit overhead lines on wood poles
 Issue 1, 1984
 Corrigenda April and July 1985
 Corrigendum December 1987
43-81 Portable earthing equipment for high voltage overhead lines up to and including 66kV
 Issue 1, 1984
43-88 Treatment of wood poles and associated timber for overhead lines
 Issue 3, 1988
43-90 Anti-climbing devices for hv lines up to and including 400kv
 Issue 2, 1979
43-91 Stay strands and stay fittings for overhead lines
 Issue 4, 1984
43-92 Conductor fittings for overhead lines
 Issue 2, 1985
 Corrigendum 1986
43-93 Line insulators
 Issue 3, 1986
 Corrigendum December 1986
43-94 Earth rods and their connectors
 Issue 2, 1977
43-95 Steelwork for overhead lines
 Issue 5, 1989
43-96 Fasteners and washers for wood pole overhead lines
 Issue 2, 1986
43-97 Steel overhead line supports
 Issue 1, 1990
44-1 Carbon brushes (for rotating electrical machines)
 Issue 2, 1971
44-2 Electric motors-dimensions
 Issue 1, 1970
44-3 Electric motors-specification (3300V and above)
 Issue 2, 1980
 Erratum 1983
44-4 Electric motors-specification (415V and below, 0.75kW and above)
 Issue 2, 1980
44-5 Testing the insulation systems of stator coils for rotating electrical machines
 Issue 4, 1987
44-7 Testing the insulation systems of bars (half coils) for rotating electrical machines of turbine driven and hydro-generator types
 Issue 1, 1978
48-1 Static relays-dimensions
 Issue 1, 1969
48-2 Fault passage indicators for 6.6kV and 11kV underground and overhead distribution systems
 Issue 1, 1974
48-3 Instantaneous high-impedance differential protection
 Issue 1, 1977
 Amendment 1, 1987
48-4 D.C. relays associated with a tripping function in protection systems
 Issue 3, 1983
50-1 Direct reading pressure gauges (for oil-filled cable systems)
 Issue 2, 1977
50-2 Bimetallic ammeters
 Issue 1, 1975
50-3 Code for transmitting and recording metering and associated information
 Issue 1, 1975
50-4 Analogue direct current signal for plant instrumentation and control systems
 Issue 1, 1978
 Addendum 1979
50-5 Standardised contact sensing circuits
 Issue 1, 1983
50-6 Pressure switches for oil-filled cable systems
 Issue 1, 1986
50-7 Token-operated prepayment watt-hour meter-Class 2
 Issue 1, 1986
50-8 Token acceptor for operation in conjunction with credit watt-hour meter
 Issue 1, 1986
50-18 Design and application of ancillary electrical equipment
 Issue 2, 1989
56-1 Ferritic steel valve castings
 Issue 2, 1989
62-1 Boiler feed pump impeller castings
 Issue 1, 1981
62-2 Ash pumps
 Issue 2, 1988
62-3 Main circulating water pump impeller castings
 Issue 1, 1983
62-4 Inspection and testing of boiler feed pump shafts, casings, impellers and diffusers
 Issue 1, 1983
66-1 0.5% Chromium, molybdenum, vanadium steel castings for steam turbines
 Issue 2, 1989
66-2 2.25% Chromium, molybdenum steel castings for steam turbines
 Issue 1, 1989
66-3 Carbon steel castings for steel turbines
 Issue 1, 1989
68-1 Tubes and tube assemblies for boilers
 Issue 2, 1988
68-2 Acceptance levels for radiographic examination of flash butt welds in steel tubes
 Issue 1, 1983
98-1 Surface preparation and paint finishing of new plant and equipment
 Issue 1, 1971
98-2 Ultrasonic probes
 Issue 1, 1979
98-4 Ultrasonic testing of ferritic steel castings
 Issue 2, 1989
98-5 Automatic ultrasonic testing of steel tubes
 Part 1: Seamless and welded tubes, outside diameters of 12mm up to but not including 160mm
 Issue 3, 1989
 Part 2: Seamless tubes, outside diameters 160mm and above
 Issue 3, 1989
 Part 3: Longitudinally submerged arc welded steel tubes, outside diameters 160mm and above
 Issue 2, 1989
 Part 4: Longitudinally electric resistance and induction welded steel tubes, outside diameters 160mm and above
 Issue 2, 1989
98-6 Ultrasonic testing of ferritic steel plate
 Issue 1, 1981
98-7 Ultrasonic probes: normal (0 degs) compression wave probes for contact testing
 Issue 1, 1982
98-8 Ultrasonic probes: low frequency single crystal shear wave angle probes
 Issue 1, 1982
98-9 Ultrasonic flaw detectors
 Issue 1, 1985
 Amendment No.1 1987
98-10 Manual ultrasonic testing of welds in ferritic steel sections
 Part 1: Butt welds in ferritic steel sections greater than 10mm thick
 Issue 2, 1984
 Part 2: Nozzle, branch, stub and attachment welds
 Issue 1, 1983
 Part 3: Butt welds in tubes of outside diameters between 25mm and 120mm inclusive
 Issue 2, 1984
 Part 4: Guidance on inspection capability and joint design
 Issue 1, 1988
98-11 Radiographic testing of steel castings
 Issue 2, July 1989
98-12 Calibration and routine performance checks of ultrasonic NDT equipment
 Issue 1, 1989
98-13 Manual ultrasonic testing of forgings for turbine and generator rotors, shafts and discs
 Issue 2, 1989
98-14 Ultrasonic testing procedures for non-magnetic generator coil retaining ring forgings
 Issue 2, 1989
98-15 Automatic eddy current testing of tubes
 Part 1: Detection of imperfections in welded titanium tubes
 Issue 2, 1989
 Part 2: Verification of hydraulic leak tightness of steel tubes
 Issue 2, 1989
 Part 3: Detection of imperfections in steel tubes
 Issue 2, 1989
98-16 Defect evaluation and size estimation by the manual ultrasonic testing method
 Issue 1, 1989
98-17 Radiographic examination of fusion welded butt joints in steel
 Issue 1, 1989
98-18 Capability of magnetic particle inspection
 Issue 1, 1989
98-19 Acceptance criteria for pipe circumferential butt welds
 Issue 1, 1989
98-20 Penetrant flaw detection capability
 Issue 1, 1989
98-21 Magnetic particle and dye penetrant testing materials. Chemical compatibility and health hazards
 Issue 1, November 1989
98-22 Capability of ultrasonic testing of ferritic steel forgings
 Issue 1, 1989
98-23 Ultrasonic and visual inspection of components lined with tin based white metal
 Issue 1, 1989
CJ1101M Vertical, horizontal or inverted indoor sealing end for 6350/11,000V single-core cables up to and including 1000mm2 (does not provide for the jointing of milliken conductored cable)
 76
CJ1102M Vertical outdoor sealing end for 6350/11,000V single-core cables up to and including 1000mm2 (does not provide forthe jointing of milliken conductored cable)
 76
CJ1103 Crepe paper insulated straight through joints for belted three-core 11kV pre-impregnated or mass-impregnated non-draining solid type cables with stranded aluminium conductors
 70
L6 400kV steel tower transmission lines with 4 x 0.4 sq.in. cu equiv SCA conductors per phase
 66
 Amendment 1, 1969
M3 Restricted hour and time of day tariff time switches
 73
S1 General technical specification for standard 33kV indoor metalclad switchgear, 750MVA and 1000MVA ratings
 65
 Errata slip, 1965
S10 Standard steelwork, etc for 11kV pole-mounted air-break isolators
 63
S12 Standard numbering for small wiring for switchgear and transformers together with their associated relay and control panels 1964
 Amendment 1, 1969
S17 Partial discharge testing of demountable synthetic resin-bonded and oil-impregnated paper bushings of rated voltage 22kV and above
 68
T2 Transformers and reactors
 66
Interim index and general requirements Schedules of general particulars and guarantees
 Section 1: Generator station and unit transformers
 Section 2: Transmission transformers (excluding auto-transformers): general design and performance
 Section 3: Auto-transformers: general design and performance
 Section 4: Oil-immersed auxiliary transformers for power stations: general design and performance
 Section 5: Air insulated auxiliary transformers for power stations: general design and performance
 Section 6: Earthing and auxiliary transformers for transmission stations: general design and performance
 Section 7: Oil-immersed series and shunt reactors
 Section 8: Magnetic circuits
 Section 9: Windings, connections and terminal markings
 Section 10: Minimum safety and external air clearances and co-ordinating gaps
 Section 11: Bushings and terminals Revised
 76
 Section 12: Cable boxes, cable sealing-end chambers and disconnecting chambers Revision 2,
 88
 Section 13: Noise and vibration
 Amendment 1, 1970
 Amendment 2, 1977
 Section 14: Earthing systems and connections
 Section 15: Tanks, conservator vessels and pressure relief devices
 Amendment 1, 1976
 Section 16: Valves, drain and air release plugs and oil sampling devices Revision 1, 1982
 Section 17: Cleaning and paint or other protective systems
 Section 18: Dehydrating breathers
 Section 19: Oil level gauges
 Section 20: Radiators, cooling-banks and oil/water coolers
 Amendment 1, 1976
 Section 21: Rating and diagram plates, valve location and function plates, terminal identification plates and labels
 Section 22: Oil circulating pumps
 Section 23: Fans
 Section 24: Motors
 Section 25: Electrical control of cooling equipment
 Section 26: Tap changing equipment (excluding single compartment types)
 Section 27: Electrical control of on-load tap change equipment
 Amendment 1, 1978 Errata slip, 1979
 Section 28: Temperature indicators for oil immersed transformers and reactors Revision 1, 1980
 Section 29: Gas and oil-actuated relays
 Section 30: Oil flow indicators, oil pressure gauges and differential pressure gauges
 Section 31: Marshalling kiosks and cubicles
 Section 32: Terminal housing for secondary wiring
 Section 33: Control connections, instrument wiring, interconnecting cables, terminal blocks and fuses
 Section 34: Drying out, transport and erection
T3 Transformers for 33kV and 22kV systems (up to 20 MVA) 1962
 Amendment 1, 1964
 Amendment 2, 1965
 Amendment 3, 1966
 Amendment 4, 1966
 Amendment 5, 1969 Guide on impulse voltage testing power transformers and reactors
C1/7 Type approval tests for 33kV mass impregnated paper-insulated solid type cable systems including non-draining types
 81
C5 House service overhead systems (HSOS) cables
 51
C7/1 Use of earthed and unearthed type cables on 33kV and lower voltage systems
 52
C16 Colours of PVC conductor
 54
C25/2 Code of practice on the design of straight through branch and service joints for use on paper insulated lead sheathed cables operating at voltages up to 600/1000 volts
 73
C28/4 Type approval test for impregnated paper insulated gas pressure and oil-filled power cable systems from 33 to 132kV inclusive
 75
 Amendment 1, 1978
 Amendment 2, 1981
C34/1 Code of practice on the design of straight-through and branch jointsfor use on paper-insulated lead-sheathed cables operating at voltage from 3300V up to 11,000V
 76
C39/5 Identification of buried plastic sheathed cables
 75
C43/1 Dimensions of copper terminal stems for sealing ends of outdoor or indoor type but not oil-immersed sealing ends
 66
C46/1 Measures necesssary to prevent corrosion damage to buried metallic structures by neighbouring cathodic protection installations
 81
C47/1 Type approval tests for single-core impregnated paper-insulated gas pressure and oil-filled power cable systems for 275 and 400kV
 75
 Amendment 1, 1978
 Amendment 2, 1981
 Amendment 3, 1983
C48/1 Type approval tests for anti-corrosion coverings for pressure type cables including pipeline cables
 74
C53 Vertical outdoor sealing ends for 22kV up to 1.5 sq in screened or unscreened mass-impregnated or non-draining solid type cables
 65
C55/4 Insulated sheath power cable systems
 89
C61 Installation bending radii of 33kV and higher voltage cables
 67
C62/3 Current ratings of copper and aluminium conductored PVC insulated and PVC sheathed HSOS cable
 71
C64 Testing procedure for approval of joints for cables generally to BEBS C5
 69
 Amendment 1, 1969
 Amendment 2, 1973
 Amendment 3, 1977
C66/1 Type approval testing procedure: protective boxes for use with buried accessories employed on 33kV-400kV insulated sheath power cable (and for sheath sectionalising insulation embodied in such accessories)
 79
C67 Specification for impregnated paper-insulated solid type cables for voltages up to and including 33,000 volts and PVC insulated cables for voltages up to and including 3300 volts
 70
 Amendment 1, 1970
 Amendment 2, 1971
C68 Method of terminating the carbon paper screen on 11kV belted multicore cables
 70
C79 Type approval tests for connectors and terminations for aluminium conductors of insulated power cables
 72
 Amendment 1, 1981
 Amendment 2, 1982
C81/3 Type approval tests for joints for 600/1000 volt cable systems
 86
C82 Pulling-in 11kV aluminium sheathed, consac and waveform cables
 77
C84 Operation of oil-filled cable systems
 76
C89 Performance specification for terminations on polymeric insulated cables rated at 12kV and 36kV maximum system voltage
 86
C90 Type approval tests for straight joints for 6350/11,000 volts three-core mass impregnated non-draining paper insulated solid cables
 84
C92 Performance specifications for pole top terminations on
6350/11,000V paper insulated cables
 87 
 Part 1: Non-metallic pole boxes for mass impregnated non-draining (MIND) solid type cable
C93 Type approval tests for mechanical connectors to metallic sheath of cables
 89
G5/3 Limits for harmonics in the UK electricity supply system
 76
G10 Standardisation of service intake arrangements for system building
 65
G12/2 National code of practice on the application of protective multiple earthing to low voltage networks
 82
G14 Protective multiple earthing: recommended principles of testing to ensure correct polarity
 71
G15 Standardisation of electricity supply arrangements in industrialised component buildings 1971
G16 Standard specification for a new single-phase service termination/metering up to 100A
 1972
G17/3 Leakage of flammable gases: recommendations
 1988
G18 Operation of air break isolating switches: recommendations
 1974
G19/1 Model guidelines for operations or work on the premises of consumers receiving hv supply
 1977
G21 Assessment of oil handling and storage plant requirements for 132kV outdoor substations
 1975
G22/2 Superimposed signals on public electricity supply network
 1984
G24 Code of practice for the safe operation of ground-mounted dependent manual closing oil switches and oil circuit breakers at 11kV and 6.6kV
 1975
G27 Mobile radio systems-modulation in the VHF middle band
 1975
G28/3 National Equipment Defect Reporting Scheme-notes of guidance
 1989
G29 Farm hygiene: precautions to prevent spread of animal and poultry diseases
 1977
G30/1 Guidance on pole top rescue procedures
 1986
G31 Recommended colour code for control boards, diagrams and wall maps
 1976
G32/1 Guide to safety in the storage, handling and use of highly flammable liquids and liquefied petroleum gases
 1985
G35 Precautions to be taken by persons working in the vicinity of overhead lines on construction sites
 1977
G38/1 Operational procedure associated with electricity supplies for traction purposes on a.c. and d.c. electrified lines
 1985
G39 Model code of practice covering electrical safety in the planning, installation, commissioning and maintenance of public lighting and other street furniture
 1979
G42/1 Overhead lines in the vicinity of recreational sites
 1983
G44 Mandatory procedure for the co-ordination of power line carrier system frequencies
 1980
G45/1 Notes of guidance for Electricity Boards on the use of irrigators, slurry guns and high pressure hoses in the vicinity of overhead lines
 1983
G46 The maintenance of electrical plant and equipment up to and including 132kV
 1981
G48 Remedial measures for Enfield 132kV gas compression cable sealing ends
 1981
G49 Jointing instructions for 132kV and 275kV compression cables, fittings and ancillary equipment (Pirelli Enfield)
 1981
G50 Maintenance of 132kV gas compression sealing ends
 1986
G51 Guidance notes on control of access to high voltage compounds with disconnectors used in the fault interfering mode
 1981
G53 Radio communications in an emergency-system design and operational recommendations to achieve maximum reliability and flexibility
 1982
G54 Operational procedures for helicopter use within the ESI
 1982
G55 The avoidance of danger from overhead electric lines and underground electric cables in forests and plantations
 1983
G56 Special requirements for the access of Boards' staff to British Railways Board operational land for inspection purposes and work
 1987
G57 Cable laying on agricultural land
 1983
G58/1 Purchase, use, storage, inspection and maintenance of hand held insulated tools for live working up to 1000 volts
 1986
G59 Recommendations for the connection of private generating plant to the Electricity Boards' distribution systems
 1985
G61 Handling of electrostatic sensitive devices
 1985
G62 Operational safety when working in the vicinity of live high voltage overhead lines
 1985
G64 Safety in cableways
 1986
G66 Guidance on the specification, use and maintenance of portable lifting equipment in Area Boards
 1986
G67 Guidance on safety in conductor stringing on overhead lines
 1987
G68 The fault performance of non-auto-reclosing oil circuit-breakers intended for 11kV (250MVA) underground distribution networks
 1988
G69 Guidance on the safety aspects of work on sulphur hexaflouride filled distribution equipment up to 145kV
G70 Vegetation control near overhead lines
 1989
G71 Purchase, storage, use, inspection and maintenance of insulating mats for electrical purposes up to 650V
 1989
L9/2 Testing of wood poles prior to climbing or use as a support
 1978
L13/1 Street lighting brackets fixed on joint user poles with the Post Office
 1960
L15/4 Notes on use of PVC insulated hv conductors (up to 11kV) as protection for Post Office open wires or aerial cable
 1968
L32/1 Recommended procedure for erecting Area Board overhead lines over motorways
 1975
L36 Metric profile scales
 1971
L37 Overhead transmission steel tower line construction: code of behaviour
 1971
L38 Protective greasing of PVC covered copper and bare and PVC covered aluminium based overhead line conductors
 1981
L41 Use of home grown wood poles for overhead line supports
 1987
M1/2 Standardisation of equipment required for kW maximum demand metering on consumer’s premises
 1956
M3 Meter voltage markings
 1951
M7/1 Certification of meters other than kWh meters
 1956
M10/3 Serial numbering of meters
 1988
M11/1 Standardisation of accuracy requirements for new meters
 1970
M12/1 Standard wiring polyphase metering equipments
 1957
M15/4 Fused flexible leads for use with portable voltage measuring instruments at voltages up to 600 volts ac/dc
 1981
M25/1 Improving the security of meters and associated service equipment
 1988
M26/2 Standard purchasing requirements for single phase, one rate and two rate house service credit meters
 1988
M28 Consumers' attachments to Boards' meters
 1988
M29 Facilities offered to customers from Area Board metering equipment
 1989
P1/3 275/33kV, 132/33kV and 132/11kV supply point transformers
 1969
P2/5 Security of supply
 1978
P3/1 Load reduction by voltage adjustment
 1977
P4 Power factor improvement
 1955
P5/5 Design of low voltage underground networks for new housing estates
 1987
P10 Voltage control at bulk supply points
 1965
P11/1 Compact 132/33kV substations
 1969
P14 Preferred switchgear ratings
 1971
P15 Transformer loading guide-a guide to the loading of double-wound transformers having nominal ratings of 120MVA and below. Supplying systems at 66kV and below from the supergrid and 132kV system
 1971
P16 EHV or hv supplies to induction furnaces
 1975
P17 Current rating guide for distribution cables
 Part 1: 11kV cables
 Part 2: 33kV cables
 1976
 Amendment 1, 1978
P18 Complexity of 132kV circuits
 1978
P19 Procedure for the planning and design of 132kV systems
 1979
P20/1 Earthing policy in relation to the customer’s installations
 1989
P23 Consumers' earth fault protection on single phase supplies up to 100A for compliance with the 15th edition of the IEE Wiring Regulations for Electrical Installations
P24 AC traction supplies to British Rail
 1984
 Addendum, 1990
P25 The short-circuit characteristics of Electricity Boards' low voltage distribution networks and the co-ordination of overcurrent protective devices on 240V single phase supplies up to 100A
 1984
P26 The estimation of the maximum prospective short-circuit current for three phase 415V supplies
 1985
P27 Current rating guide for high voltage overhead lines operating in the UK distribution system
 1986
P28 Planning limits for voltage fluctuations caused by industrial, commercial and domestic equipment in the United Kingdom
 1989
P29 Planning limits for voltage unbalance in the United Kingdom
 1990
P01 Post Office Memorandum A80(e): Protection of Post Office lines from contact with low or medium voltage power lines
 1975
P02 Post Office Memorandum A231(b): Protection of Post Office lines from high voltage power lines
 1975
P04/1 Services to British Telecom Public Telephone Housings
 1988
S2/4 Limitation of fire risk in substations at 132kV and below and in enclosed cableways
 1976
S3/1 Metering current transformers for use in switchgear
 1978
S5/1 Earthing installations in substations
 1966
 Amendment 1, 1969
 Amendment 2, 1970
 Addendum 1969
S15 Standard schematic diagrams
 1956
 Part 1: Schematic diagrams
 Part 2: Alarm schemes
 Part 3: Basic diagrams for voltage and current transformer secondary circuits
 Amendment 1, 1970
 Amendment 2, 1988
 Part 4: Circuit diagrams for 6.6/11kV standard distribution switchgear
S17 Guide for light current control, indication and alarm equipment
 1960
 Amendment 1, 1964
S26 Aluminium busbar installations for use in 33kV outdoor substations
 1968
S30 Uprating 132kV 3500MVA substations to 5000MVA
 1973
S31 Increase in single-phase earth fault rating at 132kV 3500MVA substations
 1973
S33 Switchgear current ratings at reduced ambient temperature (excluding fuses)
 1982
S34 A guide for assessing the rise of earth potential at substation sites
 1986
 Amendment 1, 1986
 Amendment 2, 1988
S35 Remedial measures for 11kV outdoor groundmounted switchgear
 1987
S36 Procedure to identify and record “hot” substations
 1988 EB/BT.1 Conditions for British Telecom and Electricity Board joint use of poles 1982
TELE.1 The Electricity Boards' practices for the design, installation, operation and maintenance of telecommunication systems
 1983
T1 System phasing
 1949
T3 Automatic voltage control at grid supply points
T8/6 The cost of losses for transformers used on distribution systems
 1987
ACE1 Power factor improvement
 1953
 Section: Recommendations
ACE3 Use of series capacitors in power systems
 1956
 Addendum 1965
 Section 3
ACE11 Standardisation of auto-reclosing facilities on 11kV ground-mounted metalclad distribution switchgear
 1966
 Addendum 1971
 Sections 3, 4, Addendum
ACE14 Guide and report on high voltage live line working on overhead lines carried out on steel, wood or concrete supports up to and including 132kV
 1974
 Revision 2 (1983) to Section 2
 All Sections
ACE21 Guide and report on medium and low voltage live line working
 1969
 All Sections
ACE23 Guide to the provision of electronic telecontrol equipment for Area Electricity Boards
 1969
 All Sections
ACE24 Standardisation of coding for ripple control signals
 1969
 All Sections
ACE30 Recommended procedure for the selection of power line carrier frequencies
 1972
 All Sections
ACE44 Pulling-in aluminium-sheathed cable
 Part 1: 11kV belted corrugated type 1975 Section 5
 Part 2: 11kV screened corrugated type, 11kV belted smooth-sided type, consac cable
 1978 Section 6
ACE46 The maintenance of electrical plant and equipment up to and including 132kV
 1981
 All Sections
ACE51 The application of ER P2/5. Security of Supply
 1979
ACE54 Auto-reclosing schemes for 11kV distribution networks
 1977
 Sections 7, 11, Appendices
ACE55
 Lightning protection for networks up to 132kV
 1977
 All Sections
ACE57 Guide to mechanical aids used for cable laying and overhead line erection
 1977
 All Sections
ACE59 132kV delayed auto-reclosing schemes
 1977
 All Sections
ACE67 Reliability investment in radial hv distribution systems with overhead lines
 1979
ACE68 Code of practice on the guarding of roadworks
 1979
 All Sections
ACE80 Guide to the maintenance of electrical plant up to and including 132kV
 1981
 All Sections
ACE105 Report on the design of low voltage underground networks for new housing
 1986
 All Sections
ET106 Remedial measures for outdoor ground-mounted switchgear
 1987
 All Sections
ET110 Test procedures to determine the capability of cable screens to withstand fault currents from internal failures
 1989
 All Sections
ET112 Harmonic impedance of supply systems
 1988
 Section 7
ET113 Notes of guidance for the protection of private generating sets up to 5MW foroperation in parallel with Electricity Boards' distribution networks.
 1989
PART II
G28/3 National Equipment Defect Reporting Scheme-notes of guidance
 1989
G43/1 Instructions for reporting to the National Fault and Interruption Reporting Scheme
 1984
P22 Code of practice procedure for advising customers on the unsuitability of water pipes for use as earth electrodes
 1981
P23 Consumers' earth fault protection on single phase supplies up to 100A for compliance with the 15th edition of the IEE Wiring Regulations for Electrical Installations
P25 The short-circuit characteristics of Electricity Boards' low voltage distribution networks and the co-ordination of overcurrent protective devices on 240V single phase supplies up to 100A
 1984
P26 The estimation of the maximum prospective short-circuit current for three-phase 415V supplies
R1/3 Immediate Notification of Dangerous and Potentially Dangerous Incidents and Changes in Operational Policy
 1988