NHS External Lighting

Issue date April 1993Revision 1: March 1995

Crown copyright Revision 2: April 1996Revision 3: November 1997

Latest amendments shown in bold

National Health ServiceModel engineering

specifications

C43External lighting

DESIGN NOTES FOR C43 PAGE 1

Issue date: April 1993 Revision 3: November 1997

EXTERNAL LIGHTING

FOR USE OF DESIGNER ONLY

THIS SECTION MUST BE DETACHED FROM THESPECIFICATION BEFORE PROCEEDING TO

ASSEMBLE TENDER DOCUMENTS

1. If you have not already read the Guidance Manual on Model Specification for BuildingServices in Health Care Buildings, please do so!

This system approach to contract documentation has been prepared by many experienceddesign engineers throughout the country to enable you to utilise your own expertise onhospital projects to the full extent and reduce the repetitive work to a minimum.

2. This is only one section of the specification suitable for tender documentation.

3. The content of this section is set out at the front of the document.

4. To make a full specification for contract documentation it will have attached:-

PART A - Standard General Conditions and Preliminary Clauses.

PART B - General Clauses Common to Building Services Plant and Equipment.

PART D - Detailed Description of Extent and Nature of Works.

5. Not all the services incorporated in this section may be needed for your project. Forexample, if it is to consist of only wall mounted luminaires illuminating the immediate areasurrounding a single building, the detailed description of works in Part D will specifywhich elements of the section are applicable. Designers should ensure that all the relevantstandards (BS, IEC, ISO etc) are the latest issues including all amendments.

6. Since this specification is intended for use throughout the UK it is universal in characterand therefore contains elements covering all aspects of a lighting services installation. Leave this section bound together, elements should not be extracted. Select the projectrequirement and specify in Part D.

7. This section has been written to include all data information and guidance contained in thefollowing documents:-



(i) Health and Safety at Work Etc, Act 1974.

(ii) DH Hazard Warning Notices to November 1997.

(iii) British Standards and Code of Practice as shown at the front of thisspecification section.

(iv) Health Service Engineering Guidance to November 1997.

8. Attention is drawn to Section 611 of the IEE Wiring Regulations, Sixteenth edition, BS7671: 1992.

9. Whilst writing Part D, consideration must be given to the information given in thefollowing clauses:-

Clause 01.04 The types and location of the luminaires to be specified in Part D.

Clause 02.01 In some instances luminaires may require secondary reflectors to prevent directlight spill into the windows of an adjacent ward or other sleepingaccommodation. The identification of these and provisions required should bestated in Part D. The actual level of IP protection should be given in PartD dependent upon the location and degree of exposure of the luminaire. Similarly, the actual choice of material for the luminaire bodies is also tobe given in Part D.

The Health and Safety Executive advise that BS EN 60079-10 should beconsidered where spillage is liable from petrol dispensing points. Zone 2 areasapply to those luminaires within 2m from the spillage.

Clause 02.02 Requires lamp types and ratings to be stated in Part D.

Clause 02.06 Both require the method of fixing to be adopted for securing wall mountedClause 02.07 luminaires to the building etc, to be detailed in Part D to ensure fixings are

compatible with the building etc fabric.

Element 03 Primarily written to cover traffic control type bollards. Where a moreornamental type of low level lighting bollard with a slender tubular supportingpost is required for the pathway etc illumination, Part D will need to omit theservice compartment detailed in 03.01 and substitute alternative means ofsupply cable termination compatible with the selected luminaire.



Clause 03.01 Wherever practical the locks of access doors to the service compartments ofClause 04.02 all bollards and columns should be common not only to each other but also to

any other such locks which may already exist on the site. The requirements toachieve this should be stated in Part D.

Clause 03.02 Column bases are normally a builders work requirement.Clause 04.03 The following is suggested as a suitable method for inclusion in Part D when

required. Bollards shall be installed in, or on, a concrete base which shallextend horizontally from the sides of the bollards for not less than 400mm. Where the bollard includes a root to be set into the ground, the depth of thebase shall not be less than the depth of the root. Where appropriate, fixingprovisions shall be set into the base. The concrete base shall incorporate acable duct to enable the ready installation of the supply cables.

Lighting columns 4m and above should be installed such that removalcan be achieved without great difficulty. A satisfactory method is to set inconcrete a suitable length of cement duct (vertically mounted) then insertthe column and backfill with soft mix. Access for supply cables must bebuilt in.

Clause 04.04 Details of mounting brackets shall be specified in Part D.

Clause 05.01 Refers to the distribution cables and installation methods detailed in SectionC41 "Common Services Electrical (low and extra low voltage)" to ensureconsistency with power etc, distribution systems on large sites.

Clause 05.02 Considers the possibility of multiple centrally controlled circuits providingreduced lighting levels for Car Parks, outlying areas etc during the night.

Clause 06.01 Required times of operation to be specified in Part D.

Clause 06.02 Gives an option to use electronic clock systems with internal battery systems tomaintain time and programme settings during any power interruption. If anelectronic clock is desired, it should be specified in Part D.

Clause 06.03 The location of light sensitive cells and their trigger time to be specified in PartD.

Clause 06.04 Requires the circuiting of individual luminaires to be detailed in Part D and/oron the Drawings.

Clause 06.05 Refers to main switchgear and controlgear to Part D and C41 to ensureconsistency with the power distribution switchgear.



Clause 07.01 Details only the special requirements for columns and brackets. Refer generalearthing standard to Section C41 "Common Services Electrical (low and extralow voltage)".

Clause 07.02 This section is suitable for use with installations complying with the IEE WiringRegulations, Sixteenth edition, BS 7671 providing the associated sections(particularly section C41) are also compatible.

Clause 08.03 It is intended to provide operational data against which future performance canbe evaluated.

End of Design Notes

C43 INDEX PAGE 1


EXTERNAL LIGHTING

INDEX

GENERAL 01

Standard References 01Protection 02Cleaning 03Luminaires and Equipment 04

LUMINAIRES 02

General 01Lamps 02Lampholders 03Ballast/Control Gear 04Ballast/Control Gear for Wall Mounted Luminaires 05Mounting Brackets 06Direct Mounting Equipment 07

LUMINAIRES (Low Level Bollards) 03

General 01Direction Displays and Traffic Signs 02

MOUNTING COLUMNS 04

General 01Service Compartments 02Installation 03Mounting Brackets 04Internal Wiring 05

DISTRIBUTION 05

General 01Terminations (Column and Bollard) 02Terminations (Wall Mounted Luminaires) 03

CONTROL 06

General 01Time Switches 02Light Sensitive Control 03Circuiting 04Central Control Panel 05

C43 INDEX PAGE 2


EARTHING 07

General 01Columns and Brackets 02

PRE-TESTING AND COMMISSIONING 08

General 01Column and Bollard Excavations 02Illuminance 03

End of Index

C43 ELEMENT 01 PAGE 1


GENERAL 01

Standard References

The materials, components and completed installations shall conform as applicable withthe following Standards, including all amendments, current at the time of tendering. Construction products should comply with European Standards and TechnicalSpecifications (ESTS). Wherever reference is made to a British Standard acorresponding ESTS (generally ISO series) shall be equally acceptable.

Where available all materials, equipment etc forming part, or whole, of the servicesspecified in the Contract, should be obtained from BS EN ISO 9000 - "QualityAssurance" certified manufacturers and preferably "kite marked" or EC equivalent.

All luminaires must carry the CE mark.

The latest dates of standard references are given at the time of issue of this Section.

01

BRITISH STANDARDS

BS EN 55015 : 1996 Limits and methods of measurement of radiodisturbance characteristics of electrical lighting andsimilar equipment.

BS EN 60079-10 : 1996 Classification of hazardous areas.

BS EN 61000 Electromagnetic compatibility (EMC).

BS EN 61000-3-2 : 1995 Limits for harmonic current emissions.

BS EN 61547 : 1996 Specification for equipment for general lightingpurposes. EMC Immunity Requirements.

BS 88 Cartridge fuses for voltages up to and including 1000V acand 1500V d.c.

Part 1 : 1988 (1992) Specification of general requirements.Part 2 Specification for fuses for use by authorised persons

(mainly for industrial application).Part 2.1 : 1988 (1992) Supplementary requirements. Re-numbered BS EN

60269-2.Part 2.2 : 1988 (1992) Additional requirements for fuses with fuse-links for bolted

connections.Part 4 : 1988 (1992) Specification for supplementary requirements for fuse links

for the protection of semiconductor devices.Part 5 : 1988 (1992) Specification of supplementary requirements for fuse-links

for use in ac electricity supply networks.Part 6 : 1988 (1992) Specification of supplementary requirements for fuses of

compact dimensions for use in 240/415V ac industrial andcommercial electrical installations.



BS 91 : 1973 (1988) Specification for electric cable soldering sockets.

BS 161 : 1990 Specification for tungsten filament lamps for domestic andsimilar general lighting purposes. Performancerequirements. Withdrawn and replaced by BS EN60064.

BS EN 29453 : 1994 Soft solder alloys. Chemical compositions and forms.

BS 419 : 1966 Specification for varnished fabrics and tapes for electricalpurposes.

BS 729 : 1971 (1994) Specification for hot dip galvanised coatings on iron andsteel articles.

BS 873 Road traffic signs and internally illuminated bollards.Part 1 : 1983 (1996) Methods of test.Part 2 : 1984 (1996) Specification for miscellaneous signs.Part 3 : 1980 (1996) Specification for internally illuminated bollards.Part 5 : 1983 (1996) Specification for internally illuminated signs and external

lighting luminaires.Part 7 : 1984 (1996) Specification for posts and fittings.

BS 951: 1986 Specification for clamps for earthing & bondingpurposes

BS 1075 (1989) Specification for Tungsten Halogen lamps (nonvehicle)

BS EN 60357 (1988) Tungsten Halogen lamps (non vehicle).

BS 1449 Steel plate, sheet and strip.

BS 1650 : 1971 Specification for capacitors for connection to power-frequency systems.

BS 1853 Tubular fluorescent lamps for general lighting service.Part 2 : 1995 Specification for lamps used in the UK not included in BS

EN 60081, BS EN 60901, BS EN 61195 AND BS EN6119.

BS EN 60081 : 1994 Specification for tubular fluorescent lamps for generallighting service.

BS 1858 : 1973 (1987) Specification for bitumen -based filling compounds forelectrical purposes.

BS EN 60920 : 1991 Specification for ballasts for tubular fluorescent lamps.General and Safety requirements.



BS EN 60921 : 1991 Specification for ballasts for tubular fluorescent lamps.Performance requirements.

BS EN 60922 : 1991 Specification for general and safety requirments forballast and discharge lamps (excluding tubularfluorescent lamps).

BS EN 60923 : 1996 Auxilairies for lamps. Ballasts for discharge lamps(excluding tubular fluorescent lamps). Performancerequirements.

BS EN 60926 : 1996 Specification for auxiliaries for lamps starting devices. General and safety requirements.

BS EN 60927 : 1991 Performance requirements for starting devices (other thanglow starters).

BS EN 60928 1995 Auxiliaries for lamps AC supplied electronic ballastsfor fluorescent lamps. General and safetyrequirements.

BS 2848:1973 Specification for flexible insulating sleeving for electricalpurposes.

BS 3502 Symbols for plastics and rubber materials.Part 1 : 1991 Schedule for symbols for plastics.Part 2 : 1991 Schedule for symbols for rubbers.

BS 3677 : 1989 Specification for high-pressure mercury vapour lamps.

BS EN 61167 1995 Specification for metal halide lamps.

BS EN 60192 : 1993 Specification for low pressure sodium vapour lamps.

BS 3858 : 1992 Specification for binding and identification sleeves for useon electric cables and wires.

BS EN 60898 : 1991 Specification for circuit-breakers for over currentprotection for household and similar installations.

BS 3924 : 1978 Specification for pressure-sensitive adhesive tapes forelectrical insulating purposes.

BS 3988 : 1970 Specification for wrought aluminium for electricalpurposes. Solid conductors for insulated cables.

BS EN 61048 : 1993 Specification for capacitors for use in tubular fluorescentand other discharge lamp circuits. General and safetyrequirements.



BS EN 61049 : 1993 Specification for capacitors for use in tubular fluorescentand other discharge lamp circuits. Performancerequirements.

BS 4533 Luminaires. (See also BS EN 60598).Part 101 : 1990 Specification for general requirements and tests.Part 102 Particular requirements.Section 102.3 : 1990 Specification for luminaires for road and street lighting.

Withdrawn, replaced by BS EN 60598-2-3 : 1994Section 102.5 : 1990 Specification for floodlights.Section 102.6 : 1990 Specification for luminaires with built-in transformers for

filament lamps. Withdrawn, replaced by BS EN 60598-2-6 : 1995.

Section 102.51 : 1986 Specification for luminaires with type of protection "N".

Part 103 Performance requirements.

BS EN 60947 Specification for low voltage switchgear and controlgear.

BS EN 60947-2:1992 Circuit breakers.

BS 5101 Specification for lamp caps and holders, together withgauges for the control of interchangeability and safety.

Part 4 : 1980 (1986) Lamp caps, lampholders and gauges used in the UK butnot specified in Parts 1, 2 or 3.

BS EN 60061 Specification for lamp caps and holders together withgauges for the control of interchangeablity and safety.

60061-1 : 1993 Lamp caps.60061-2 : 1993 Lampholders.60061-3 : 1993 Gauges.

BS EN 61184 1995 Bayonet lampholders.

BS EN 61195 1994 Double capped fluorescent lamps. Safety specifications.

BS EN 61199 1994 Single capped fluorescent lamps. Safety specifications.

BS EN 60238 : 1996 Specification for Edison screw lampholders.

BS 5378 Safety signs and colours.Part 1 : 1980 Specification for colour and design.Part 2 : 1980 Specification for colorimetric and photometric properties

of materials.

BS 5489 Road lighting.Part 1 : 1992 Guide to the general principles.Part 2 : 1992 Code of practice for lighting for traffic routes.Part 3 : 1992 Code of practice for lighting for subsidiary roads and

associated pedestrian areas.



Part 4 : 1992 Code of practice for lighting for single-level road junctionsincluding roundabouts.

Part 5 : 1992 Code of practice for lighting for grade-separated junctions.

Part 6 : 1992 Code of practice for lighting for bridges and elevatedroads.

Part 7 : 1992 Code of practice for lighting for tunnels and underpasses.Part 8 : 1992 Code of practice for lighting for roads near aerodromes,

railways,docks and navigable waterways.Part 9 : 1996 Code of practice for lighting for urban centres and public

amenity areas.

BS EN 40 Lighting columns.BSEN 40-1 : 1992 Definitions and terms.

BS 5733 : 1995 Specification for general requirements for electricalaccessories.

BS 5971 : 1988 Specification for safety of tungsten filament lamps fordomestic and similar general lighting purposes.Withdrawn and replaced by BS EN 60432 1995.

BS 5972 : 1980 Specification for photoelectric control units for roadlighting.

BS 6004 : 1995 Specification for PVC-insulated cables (non-armoured) forelectric power and lighting. Implements cenelec HD 21.

BS 6007 : 1993 Specification for rubber insulated cables for electric powerand lighting. Implements cenelec HD 22.

BS 6179 : 1982 (1992) Specification for tungsten filament lamps for generalservice (with lives of 2000h).

BS 6207 Mineral insulated cables with a rated voltage not exceeding750V.

Part 1 : 1995 Cables Implements cenelec HD 586.1.S1 : 1994.Part 2 : 1995 Terminations

BS 6346 : 1997 Specification for 600/1000 V and 1900/3300 Varmoured electric cables having PVC insulation.

BS 6360 : 1991 Specification for conductors in insulated cables and cords.Implements cenelec HD 383.S2.

BS 6480 : 1988 Specification for impregnated paper insulated lead or leadalloy sheathed electric cables of rated voltages up to andincluding 33000V

BS 6500 : 1994 Specification for insulated flexible cords and cables. Implements cenelec HD 21, 22.



BS 6899 : 1991 Specification for rubber insulation and sheath of electriccables. Implements cenelec HD 21.1.S2.

BS 7654 : 1997 Specification for single phase street lighting fuses(cutouts) for low-voltage public electricity distributionsystems. 25A rating for highway power supplies andstreet furniture.

OTHER REQUIREMENTS

HEALTH AND SAFETY AT WORK ETC ACT 1974

ELECTRICITY AT WORK REGULATIONS 1989

ELECTRICITY SUPPLY REGULATIONS 1988 (as amended 1992 and 1994)

INSTITUTION OF ELECTRICAL ENGINEERS

IEE Wiring Regulations 16th edition BS 7671:1992.

ALUMINIUM FEDERATION

Information Bulletin No 3 "Soldering Aluminium".

NHS ESTATES

HTM 2007 "Electrical Services : Supply and Distribution".

HTM 2014 "Abatement of Electrical Interference".

HTM 2023 "Access and Accommodation for Engineering Services"

HTM 2011 "Emergency Electrical Services"

HTM 2020 Electrical safety code for low voltage systems (Escode -LV)

Protection

Shall:-

be provided for all luminaires, columns, controlgear, fittings etc to prevent damagefrom physical, damp or other cause, as necessary during the execution of the works.

02

Cleaning

Shall:-

be carried out to all luminaires, columns etc on completion of installation.

03



Luminaires and Equipment

Shall:-

be of the manufacture and/or design and/or types as specified in Part D and asamplified by the requirements of this Section.

be installed in the locations indicated on the drawings and in accordance with Part D.

04

End of Element



LUMINAIRES 02

General

Shall:-

comply with BS 873 and BS 4533, as applicable.

be provided with cable entry and/or fixing provision appropriate to method ofmounting.

be fitted with hinged or captive diffusers in the case of column mounted units,otherwise be fitted with protective enclosures capable of removal only be use of aspecial tool.

have all internal wiring carried out in high temperature cable, either PVC or butylrubber to BS 6007 and BS 6500 to suit the appropriate temperature conditions.

have all internal wiring clipped or restrained.

be fitted with heat resisting sleeving to BS 2848 where required.

incorporate a fused weatherproof terminal block, shrouded so as to prevent contactwith live parts.

be corrosion proofed and vandal resistant.

be protected as follows:-

Index of protection minimum of IP23Generally IP54-65 would be considered more appropriate, as detailed in part D.

Luminaire bodies shall be manufactured in Aluminium, Epoxy Powder coated,moulded Polyester, any clips shall be Stainless steel or suitable plastic. Steel onlyto be used if galvanised. Diffusers shall be vandal resistant and UV stabilised.

Shall not:-

have the external case penetrated by the fixing screws of any internal component.

01

Lamps

Shall:-

comply with BS 161, BS 1853 (replaced by BS EN 60081), BS 3677, BS 5971, BS6179 as applicable.

be handled with care in accordance with the manufacturer's recommendations.

02



be mounted in the plane giving maximum efficiency and life for the type of lamp.

be of the types and ratings specified in Part D.

Lampholders

Shall:-

comply with BS 5101, BS EN 60061, BS EN 61184, BS EN 61195, BS 61199 &BS 60238, as applicable.

be securely mounted in the luminaire, particularly when used as the sole support for thelamp or tube.

be effectively earthed when of metal construction.

be all ceramic construction or metal cased with ceramic interiors or of hightemperature plastic to above standards.

03

Ballast/Control Gear

Shall:-

be supplied and installed for all discharge lamps.

be of rating, type and composition compatible with the lamp type and rating which itcontrols.

comply with:-

All CE marking and standardsBS EN 60920, BS 60921, BS 60922, BS EN 60923, BS EN 60926,BS EN 60928, BS EN 61048 & BS EN 61048.

include radio interference suppression appropriate to type of lamp circuit employed.

be "switch start" pattern for fluorescent lamp circuits.

incorporate fused terminal block, shrouded so as to prevent contact with live parts.

04

Ballast/Control Gear for Wall Mounted Luminaires

Shall:-

be of rating, type and composition compatible with the lamp type and rating to becontrolled.

05



Comply with:-

All CE marking and standardsBS EN 60920, BS EN 60921, BS 60922, BS EN 60923, BS EN 60926BS EN 60928, BS EN 61048 & BS EN 61049.

include radio interference suppression appropriate to type of lamp circuit employed.

be "switch-start" pattern for fluorescent lamp circuits.

be mounted within the luminaire.

Mounting Brackets

be supplied and fitted for all wall mounted luminaires, which do not incorporate wallmounting provisions within their basic construction.

be securely fixed to the building structure, as detailed in Part D.

be of the type, design and finish specified in Part D.

06

Direct Mounting Equipment

Shall:-

be securely fixed to the building structure, as detailed in Part D.

07

End of Element

C43 ELEMENT 03


LUMINAIRES (Low Level Bollards) 03

General

Shall:-

comply with BS 873, where applicable.

incorporate service compartment for the distribution cable termination unit and, ifspecified in Part D, the controlling time switch or other switching device.

be provided with lockable door protection to IP34 to the service compartment.

01

Direction Displays and Traffic Signs

Shall:-

comply with BS 5378.

utilise standard road traffic direction/information symbols whenever applicable.

show the directions and/or information specified in Part D.

be set for viewing with information displays located squarely to intended readers withdisplay indicating correct directions.

conform with the requirements of Part D.

02

End of Element



MOUNTING COLUMNS 04

General

Shall:-

comply with BS EN 40-1 as applicable.

01

Service Compartments

Shall:-

be provided at the base of all mounting columns.

be of adequate size to allow access for maintenance.

be of adequate size to accommodate the lamp Ballast/Control Gear, together with thedistribution cable termination unit and, if specified in Part D, the controlling time switchor other switching devices.

be fitted with a lockable door protected to IP34.

be fitted with securely fixed mounting boards of rot and insect proofed timber, plasticor earthed metal.

02

Installation

Shall:-

conform with the requirements of Part D.

be vertical from all angles of view.

03

Mounting Brackets

Shall:-

be supplied and fitted to all columns supporting luminaires which are other than 'posttop' mounting.

be of the types and lengths specified in Part D.

be of a design and section to match the column.

be securely fixed to the columns so as to maintain their set positions under allconditions.

04



Internal Wiring

Shall:-

be carried out using PVC insulated and sheathed cables to BS 6004 and BS 6500 tosuit the appropriate temperature conditions.

be fitted with heat resisting sleeving to BS 2848 where required.

05

End of Element



DISTRIBUTION 05

General

Shall:-

comply fully with the requirements of the "Common Services Electrical (low and extralow voltage)" Section C41 of this specification, appropriate to the cable types andmethods specified.

be carried out using the cable systems and methods detailed in Part D.

Shall not:-

be carried out by means of uninsulated overhead cable.

01

Terminations (Column and Bollard)

Shall:-

be made at fused termination chambers shrouded so as to prevent contact with liveparts, compatible with the distribution scale.

be made within the service compartment.

include an earth terminal and test point.

where the distribution cable supplies centrally controlled multiple external lightingcircuits (eg all night and part night), include provision for the termination of all circuitswith facility for readily connecting the served luminaire to any circuit.

02

Terminations (Wall Mounted Luminaires)

Shall:-

be made at a fused termination block forming part of the Ballast/Control Gear, thewhole to be shrouded so as to prevent contact with live parts.

03

End of Element



CONTROL 06

General

Shall:-

be central or local type enabling the external lighting to be controlled as specified inPart D.

01

Time Switches

Shall:-

be mounted in metal or high impact plastic cases.

be operated by synchronous electric motor with a spring reserve drive of not less than12 hours duration which is automatically maintained fully wound by the main drivemotor.

OR

be of the programmable electronic type

OR

be operated by crystal controlled, motor driven timer with 100 hour, re-chargeablebattery back-up.

be provided with a fused clock drive circuit with terminations independent of the loadswitch terminations.

include solar dial cams appropriate to the location of the site to match the switchingperiod to seasonal day length variation.

be rated for inductive loading where controlling discharge lamps.

operate in conjunction with contactors where the controlled load is greater than theswitch contact rating.

incorporate secondary operating cams to provide an off period during the night when"part night" lighting is specified to be controlled by a single time switch.

02

Light Sensitive Control

Shall:-

have the light sensitive cell mounted at the head of the luminaire when controlling anindividual lantern.

03



have the light sensitive cell mounted in the position specified in Part D and/or shown onthe Drawings when used to control a group of lanterns.

energise the lighting whenever the daylight level falls below a pre-determined value fora period of 10 minutes or as specified in Part D.

when specified in Part D, incorporate a time switch connected to restrict hours ofoperation.

be provided with an accessible, manual over-ride switch for testing the luminaire orgroup of luminaires.

Circuiting

Shall:-

where multiple lighting circuits are required, be carried out as detailed in Part D and/orshown on the Drawings.

04

Central Control Panel

Shall:-

comprise the switchgear and controlgear located as specified in Part D.

comply with the requirements of the "Common Services Electrical (low and extra lowvoltage)" Section C41 Specification.

control and protect the external lighting distribution system.

be fed from the main electrical distribution system, as specified in Part D.

05

End of Element



EARTHING 07

General

Shall:-

comply fully with the requirements of the "Common Services Electrical (low and extralow voltage)" Section C41 Specification.

01

Columns and Brackets

Shall:-

be provided with circuit protective conductors between the main earth terminal and allcomponents requiring to be earthed, including the luminaire.

be bonded to earth where of metal construction.

Shall not:-

be relied upon as the sole means of earth continuity.

be bonded to adjacent metal structures.

02

End of Element



PRE-TESTING AND COMMISSIONING 08

General

Shall:-

comply fully with the requirements of the "Common Services Electrical (low and extralow voltage)" Section C41 Specification as far as applicable to these works.

01

Column and Bollard Excavations

Shall:-

be inspected and agreed correctly located and executed before the columns and/orbollards are set in position

02

Illuminance

Shall:-

be measured and recorded as appropriate to the functional requirement.

03

End of Element

End of Section C43

BookmarksEXTERNAL LIGHTINGGENERALStandard ReferencesProtectionCleaningLuminaires and Equipment

LUMINAIRESGeneralLampsLampholdersBallast/Control GearBallast/Control Gear for Wall Mounted LuminairesMounting BracketsDirect Mounting Equipment

LUMINAIRES (Low Level Bollards)GeneralDirection Displays and Traffic Signs

MOUNTING COLUMNSGeneralService CompartmentsInstallationMounting BracketsInternal Wiring

DISTRIBUTIONGeneralTerminations (Column and Bollard)Terminations (Wall Mounted Luminaires)

CONTROLGeneralTime SwitchesLight Sensitive ControlCircuitingCentral Control Panel

EARTHINGGeneralColumns and Brackets

PRE-TESTING AND COMMISSIONINGGeneralColumn and Bollard ExcavationsIlluminance

Contents: Barbour - printed on 08/01/2008 15:59:20 by Admin John Paul Construction Ltd

NHS External Lighting

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