STREET LIGHTING SPECIFICATION
Revised Specification 22nd December 2014Neighbourhood ServicesTechnical Services,Strategic Highways - AssetsStreet LightingSTREET LIGHTING INSTALLATIONSFor Lighting on New Residential Roads and Industrial EstatesSTREET LIGHTINGSPECIFICATIONTerry CollinsDirector of Neighbourhood ServicesCounty HallDurhamDH1 5UQDecember 2014Final
Specification for Street LightingSection 38/278 AgreementsIndexPage1.General Requirements12Planning & Programming53Prospective Residents Liaison54Siting of Equipment65Adoption of Lighting66Design Standards79Energy Conservation910Legislation, Regulations, Codes and Specifications1011Obtrusive Light1113Equipment (General)1214PECU’s1215Luminaires1316LED’s & LED Drivers1517General Specification1618Columns & Brackets1919Corrosion Protection for Steel Columns and Brackets2220Light Sources2221Clear Cut-Outs2322Fuses2423Cables2424Cable Ducts25
25Cable Laying2526Erection of Columns & Brackets2527Internal Wiring2628Illuminated Traffic Signs2629Electricity Supply Services2730Earthing2831Painting2832Electric Testing & Commissioning86Appendices1,2,3,4 Typical Wiring Arrangements30 to 335Lighting Column Standard Foundation346Pedestrian Refuge Signs Standard Detail357Electrical Test Report Forms36 & 378DCC Scheme Approval Check List38
Street Lighting Specification for Street LightingResidential and Industrial Estates1.General Requirements1.1This specification is intended as a guide and it must be borne in mind by thedeveloper that any and all proposals put forward are subject to approval by theStreet Lighting Manager for Durham County Council, Neighbourhood Services, andStrategic Highways Assets. All proposals must conform to this specification.1.2Prior to site works of any kind the developer must contact the Director ofNeighbourhood Services, Strategic Highways Assets Street Lighting Section todetermine if any works are required to maintain electrical supplies to existing streetlighting or illuminated street furniture within or in the vicinity of the site.1.3The developer shall provide an approved form of street lighting as an integral part ofthe estate development. Proposals for street lighting must be included with thedrawings and specifications and be submitted for approval to the Director ofRegeneration and Economic Development. The proposals shall include thepositions of lighting columns, type of columns, lanterns, cables, cable routes andproposed Electricity Company Northern Power Grid or Independent DistributionNetwork Operator service connections;. Two copies of each drawing shall beprovided. In addition an Auto-cad (DWG) drawing shall be e-mailed to the Directorof Neighbourhood Services, Strategic Highways Assets Street Lighting Manager atns.highwaysassetsadmin@durham.gov.uk or the appropriate officer, together with acopy of the design data showing proposed illumination levels. On the roads andfootpaths/ footways to be lit including the cable design calculations whereappropriate.“Fees for checking standard of lighting design are taken from the supervision feesincluded in the Section 38 agreement. However, where designs are complex orinvolve major changes to the existing lighting system, additional fees may berequired and this will be identified to the developer/consultant at the time. Additionalfees may be required if a single submission is submitted without the requiredchanges on more than two occasions, again these will be identified to thedeveloper/consultant the time.”1.4Consultation1.5It is important for the consultant or developer to consult with the local authorityadvising that the unmetered supply connections will be fed from and IDNO network.Any questions, technical queries and advice needed can be addressed at thedesign stage and before the site works commence.1.6Highway Electrical Equipment and Connections Design1.7Early exchange of information can help reduce delays, variations and hence costs.Page 1revision-23-12-2014
1.8Highway Electrical designs - eg street lighting designs should be approved byDurham County Council and information exchanged between the developer,adopting authority and distribution network operator that will provide the electricityconnections.1.9Where possible the design of street lighting installations should be included with thedeveloper’s plot layout. Electricity mains can be designed a routed in such a waythat the positioning of street lighting columns can be optimised to reduce costs atthe outset.1.10Connection Arrangements1.11Street lighting connections will normally be via single connections to each column orwhere specified by the local authority, a single point of connections will be providedto a control point.1.12IDNO’s will tend to work at national level across the UK and therefore, there will bea requirement to maintain a consistent connection arrangement for each point ofsupply.1.13IDNO’s will utilise ‘Waveform’ CNE mains cables with a CNE service cableterminated into a street lighting clear cut-out offering a PME earth terminal wherepossible. IDNOs will endeavour to meet the requirements of adopting local authorityregarding their requirements for looped services, agreement should from the IDNOprior to the installation of such services.1.14Secondary double pole isolation should be provided above the distribution networkoperator’s clear cut-out and the owner of the street lighting equipment inaccordance with the local authority’s specification.1.15The IDNO/DNO will terminate the cable into the IDNO/DNO clear cut-out andenergise the short tails to the column by insertion of a fuse into the clear cut-outafter completing the necessary insulation resistance, polarity and earth loopimpedance checks, but will leave the fuse withdrawn from the secondary isolation.1.16Where a competent person is on site and can provide certificates of satisfactorytests then the columns can be energised by that competent person.1.17Street Lighting Inventory1.18Details of the street lighting equipment should be supplied by the developer with thestreet lighting connections application.1.19Details of the street lighting equipment should be submitted to the IDNO to establishthe unmetered supplies certificate (UMS) by either the developer.1.20The Local Authority will need to include the adopted street lighting equipment intheir inventory system. The LA inventory will be capable of clearly identifying itemsPage 2revision-23-12-2014
connected to different DNO networks (where there is more than one DNO in a givenauthority area) as well as multiple INDN networks. This will enable the LA to contactthe IDNO or DNO to report faults (eg loss of supply or damage to the asset).1.21The LA will need to submit a separate detailed inventory of equipment to theUnmetered Supplies Operator (UMSO) for each IDN and DNO operating in the LAarea at the frequency agreed in the respective connection agreements. The formatof the detailed inventory would be as defined in section 4 of the UnmeteredSupplies Operational Information document produced by Elexon.1.22Unmetered Supply Operator (UMSO)1.23Each UMSO will prepare a summary of the inventory and send it to the LA’s MeterAdministrator who will then calculate the half hourly and non-half hourlyconsumptions for the LA who has chosen to purchase their energy. The MeterAdministrator will run separate equivalent meters for each DNO/IDNO network.1.24Meter Point Administration Number (MPAN)1.25The distribution network operator provides a Meter Point Administration Number(MPAN) which represents a reference point for billing purposes. There will be adifferent MPAN issued to the LA for each distribution network operator.1.26The LA will be required to submit each Mpan to the energy provider for registrationand they will receive separate bills for each MPAN. The LA may choose to treatlighting units on IDNO networks as non-half hourly or half hourly.1.27The Energy Supplier1.28The developer or LA cannot purchase energy from the distribution networkoperator. The developer or LA can continue to purchase energy independently in acompetitive mark and use the distribution network operator to transport that theenergy. A supplier must be nominated before connection is made. The developer orLA nominated supplier would bill the customer as normal.1.29Section 38 Agreements should not discriminate between and incumbent host DNOand an IDNO.1.30The Meter Administrator1.31The Meter Administrator (MA can remain the same; the only change is that there isan alternative name to the incumbent DNO on the inventory cross referenced to adifferent MAPAN. The appropriate approach will depend on the commercialarrangement between the LA and their MA.1.32Duos Charges1.33Distribution Use of System (Duos) charges are published in the individualIDNO/DNO Duos Charging Statement which is approved by OFGEM. Duos chargesPage 3revision-23-12-2014
are charged to the supplier and remain unchanged between the DNO andembedded IDNO network.Comparison of key activities for street lighting installations connected toDNO & IDNO networksStreet LightingInstallation Connectedto a DNO NetworkSupply DNOUnmeteredOperator (UMSO)New ConnectionDNOProviderStreet Lighting Inventory DNOIssued toStreet LightingInstallation to IDNONetworkIDNOIDNOIDNOUMS Certificate ProviderDNOIDNOMeter Point IdentificationNumber (MPAN) issued byConnectionMaintenance/24-HourEmergency ResponseDiversionary Works &DisconnectionsContact DetailsDNOIDNODNOIDNODNOIDNODNOPublishedTelephone NumbersMinimumPerformance As per GSoP (to beStandardsreplaced by R11O-ED1)DUoS ChargeAs Per DNO ChargingStatementSupplierNpowerMeter AdministratorNpowerIDNOPublishedTelephone NumbersAs per GSoP (to bereplaced by R11O-ED1)UnchangedNpowerNpower1.33Service Level Agreements1.34DNO’s and IDNO’s are bound by the requirements of the Guaranteed Standards ofPerformance (GSoP) as agreed and issued by Ofgem. It should be noted that it isintended that the GSoP will be replaced by DNO incentivisation through R11O-ED1in 2014.1.35DNO’s and IDNO’s should publish numbers and make these available to the LA’sand developers to provide a point of contact during normal working hours and alsofor 24 hour emergency cover.1.36Unmetered Supplies Certificate produced by the IDNO/DNO are issued to thedeveloper/LA for their use and issue to the Supplier.Page 4revision-23-12-2014
1.37Emergency Response1.38DNO’s and IDNO’s have a duty to respond to emergencies, provide maintenanceservices and to provide new connections/disconnections whilst recovering itsreasonable charges in doing so.1.39The approved drawings will be used on any subsequent adoption inspections,therefore, any changes made to road or lighting layout should be re-submitted forapproval.1.40The drawing indicating the proposed lighting and electrical layout should indicate aclear concise boundary line to identify the limit of adoption (footpaths/ footway androadway).1.41Where new accesses are formed onto existing highways/ footways, or alterations toexisting accesses, a conflict area is created. The developer shall be responsible forthe provision of new lighting or alterations to existing lighting to the relevantstandards.1.42Cabling and Servicing – Generally Electricity Company low voltage electricalservice connections from their mains system (type Ref: TS/57 manufactured byTofco/Lucy) double pole clear cut-outs but in the absence of such mains anunderground loop in/out system of cabling.2.00Planning and Programming2.1The developer shall plan all lighting works in conjunction with Durham CountyCouncil’s Street Lighting Policies (available on DCC website hting) and standards relating todevelopments. The developer shall provide Durham County Council a copy of theworking programme indicating installation works including any revisions thereto.3.00Prospective Residents Liaison3.1The developer shall show all lighting units and other illuminated equipment (signsand bollards) on all construction/layout plans (including sales and legal/conveyancing literature) in order that prospective residents are aware that theremay be equipment placed adjacent to any given plot or property. Durham CountyCouncil will not involve itself in any dispute between the developer and prospectiveresident. Neither will Durham County Council entertain any request to move or alterany equipment arising from any such dispute arising from the developer notappraising the prospective resident of the proximity of any equipment in relation to aplot or property.Page 5revision-23-12-2014
3.2Not Adopted’ Signs to be erected3.3On all lighting units and lit signs erected as part of the development (whether Onsite or Off-site), the developer shall attach, via non-metallic cable ties, one ‘NotAdopted’ sign. These signs shall be attached to the lamp columns on erection andremain until such time that the County Council adopts the equipment. The signsshall generally face the carriageway. The pattern and legend of this sign shall beapproved by Durham County Council but the purpose is to advise residents towhom they should refer any lighting defect or any other enquiry. On a largedevelopment (consisting of more than one new road) Durham County Council wouldadvise the developer to erect an informative sign at the entrance to the site advisingresidents of contact details for all maintenance purposes. It is essential that thesign shall have accurate contact information for the developer or his agent.4.00Siting of Equipment4.1All street lighting and associated cable works and ancillary equipment shall only beinstalled within the area of the estate which it is proposed will be adopted ashighway. In exceptional circumstances, and with the prior approval of the Directorof Neighbourhood Services, the developer may be permitted to site apparatusoutside the highway if appropriate easements are granted to the County Council atthe developer’s expense.4.2Columns must not obstruct footpaths or vehicular accesses. They shall be sited inaccordance with BS5489-1:2013 A2:2008, Code of Practice for the design of roadlighting part 1: Lighting of roads and public amenity areas and generally be plantedin the footpath at the rear or in the absence of a footpath, a minimum of 0.8 metresfrom the kerb edge to the face of the column and within the highway to be adopted.No obstruction or planting shall hinder access to the column base compartment orthe light distribution from the lantern5.00Adoption of Lighting5.1Every lighting unit and underground cable, on completion and before beingenergised shall be inspected and tested to verify that the requirements of BS 7671(Current Edition of the IEE Wiring Regulations) have been met. The inspection andthe test results shall be submitted to the Director of Neighbourhood Services nolater than the time of requesting a Part 2 adoption inspection.5.25.3It is the developer’s responsibility to obtain an Meter Point AdministrationNumber (Mpan) from Northern Power Grid or Independent DistributionNetwork Operator. When requesting underground services for the lightinginstallation from the electricity company. The developer will then be charged for theenergy consumed by the street lighting installation from the date of connection up toand including the date of the final adoption certificate.Durham County Council Application for Electrical Supply Methodology shall beapplied when applying for electrical connection.Page 6revision-23-12-2014
5.4The developer shall be responsible for the maintenance (including replacement ofdamaged columns and the like) of the new equipment and any existing equipmentaffected by the works from the date of commencement of works up to and includingthe date of the final adoption certificate.5.5Upon completion of the installation ‘as constructed’ drawings shall be forwarded tothe Director of Neighbourhood Services showing column positions, cable routes,depths, sizes and positions, and service positions and centrally managed systems.5.6On request from the developer for formal adoption of the development the lightinginstallation will be inspected and any remedial works shall be highlighted. Thedeveloper shall be responsible for any remedial repairs together with a bulk lampchange and clean prior to a final adoption certificate being issued. In addition,dependent upon the age of the installation, the developer may be required to retest/ re-paint the installation at his own expense.5.7As soon as possible after the date of the final adoption certificate the developershall remove ‘Not Adopted’ signs.6.00Design Standards6.1All public lighting provided on the adopted highway shall be designed and installedin accordance with BS5489-1:2013 A2:2008,Code of Practice for the design ofroad lighting part 1: Lighting of roads and public amenity areas and BSEN 132012:2003, BS5489-2-2003, part 2 Lighting of Tunnels, PD CEN/TR 13201-1-1:2004Selection of Lighting Classes, BS EN 13201-3:2003 Calculation of Performance, BSEN 13201-4:2003 Methods of Measuring Lighting Performance and BS 5489 Guideto General Principals.,6.2The actual level of public lighting to be provided shall be in accordance withBS5489 2013 P6, however, P4 shall be provided in areas considered of high crime.6.3Deviation from Standards shall only be allowed with prior approval by the Director ofNeighbourhood Services.6.4In some areas of County Durham the provision of public lighting shall comply withLocal Strategies that have been developed, for example Durham City Vision,Bishop Auckland Town Centre Lighting Strategy, and Barnard Castle Vision.6.5The Institution of Lighting Professionals ‘Guidance Notes for the Reduction ofObtrusive Light’ recommendation for zoning of areas shall be used when assessinglighting requirements.6.6Zone E1 – National Parks, Areas of Outstanding Natural Beauty, Sites ofSpecial Scientific Importance and other Dark Area.6.7Villages and settlements within a Zone E1 area shall only be provided with lightingwhen requested by the Parish Council or residents and then limited to strategicPage 7revision-23-12-2014
locations such as telephone boxes, bus stops etc. Lighting shall be restricted toCEN Luminous Intensity Class G4/5 if possible otherwise Class G2/3, as specifiedin Table A1 of luminous intensity classes in EN 13201-2:2003 Annex A.6.8In Zone E1 areas outside villages and settlements shall only be provided withlighting where there is a known night time safety problem which cannot becontrolled by other methods such as reflective studs, signing etc. New lightinginstallations shall be provided to the minimum level proposed by the Standard andbe full cut off, CEN Luminous Intensity Class G6. Consideration shall be given todimming or switching to reduce or vary lighting levels.6.9Zone E2 - Areas of Low District Brightness (Rural Location outside Zone E1)7.0Villages and settlements within a Zone E2 area shall generally be provided withlighting in accordance with the relevant standard applicable to the type and use ofthe highway. Consideration shall also be given to the lighting of footpaths and cycletracks with high night time use. Further details on the lighting of cycle tracks areavailable in the Institution of Lighting Professionals Technical Report No 23, Lightingof Cycle Tracks, 1998. However, where a cycle track or footpath is remote from ahighway or properties and an existing alternative lit route exists, regard should begiven to whether it is safe to attract people on to isolated areas by the provision oflighting. Lighting shall be CEN Luminous Intensity Class G4/5 if possible otherwiseClass G2/3.7.1On roads between villages and settlements in Zone E2 areas lighting shall only beprovided where there is a known night time safety problem which cannot becontrolled by other methods. New lighting installations shall be provided to theminimum level recommended by the Standard and be CEN Luminous IntensityClass G6.7.2Roundabouts are areas of high traffic conflict and are therefo
1.15 The IDNO/DNO will terminate the cable into the IDNO/DNO clear cut-out and energise the short tails to the column by insertion of a fuse into the clear cut-out after completing the necessary insulation resistance, polarity and earth loop impedance checks, but will leave the fuse withdrawn from the secondary isolation.
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