METHODS AND REQUIREMENTS FOR INSTALLING NON …

1 UG-1: ServicesGreenbookEDMRev. #25: 12-17-20063928 Page 1 of 6 Electric Distribution063928 design and ConstructionFunction:Asset Type:Issued by:Date:12-17-20 Rev. #25: This document replaces PG&E Document 063928, Rev. #24. For a description of the changes, see Page AND REQUIREMENTS FOR INSTALLING NON-RESIDENTIALUNDERGROUND ELECTRIC SERVICES0 600 VOLTS TO CUSTOMER-OWNED FACILITIESP repared by: ABB1 Lisseth Villareal (LDV2)This document is also included in the following manuals: Electric and Gas Service REQUIREMENTS (Greenbook) Electric design ManualPurpose and ScopeThis document shows the METHODS and REQUIREMENTS for INSTALLING PG&E-owned underground conductors incommercial buildings and three-phase multi-residential buildings.

2 For agricultural underground service refer toDocument 054619 General Information1. This document is also included in the Electric and Gas Service REQUIREMENTS (Greenbook) and inElectric design Manual. See Document 058817 for terminating service Single-phase main service switches must not exceed 225 amps for 120/208 V services or 600 amps for120/240 V services . All single-phase, 120/208 V services require full-sized Ensure that any installed secondary distribution cable is not smaller, either in size or in number of runs, thanthe largest service that is on the load side of that secondary system. For example, if the largest servicerequired will be 1-350 Al, then the secondary must be a minimum of 1-350 Requirements4.

3 The applicant must provide trench and backfill as specified by PG&E, service conduit in accordance withTable 2, Table 3, and Table 4 on Page 4 and a service termination enclosure as specified in Conduit type for PG&E service conductors under the foundation up to 10 past the outside wall of the applicant sbuilding must be as indicated below:A. Galvanized rigid steel or PVC coated rigid UL approved Schedule 40 or 80 : Galvanized Rigid Steel (GRS) conduit is required when the conduit will be exposed, installed along wallsand low clearance ceilings, and may be subject to damage such as vehicles, machinery or tools. To avoid cableinsulation damage, the end of the conduit must be provided with a suitable termination fitting such as a bushing,nipple, end bell, or cable protector, etc.

4 Conduits must not pass under or through one building to supply When an applicant s main service panel is installed in an electric meter and service termination room, the roommust be built with one wall and a door that leads to the outside of the applicant s building. See Electric and Gas Service REQUIREMENTS (Greenbook)Section Electric Meter Rooms . 7. State or local building codes require special conduit seals in certain locations, such as gasoline and hydrogenfilling stations. If the underground service conduit runs within a 20 horizontal radius of a gas pump (from anyedge of the dispenser enclosure), or within a 10 horizontal radius of an underground gas tank, the applicantmust be responsible for the REQUIREMENTS listed on A C below.

5 Similarly, if the underground service conduitruns within a 5 horizontal radius of a hydrogen cooling block, dispenser, or storage, or within 15 horizontalradius of a hydrogen compressor, the applicant must be responsible for the REQUIREMENTS listed on A Cbelow:A. The type of conduit required from the meter termination point to the connection point with PG& : ServicesGreenbookEDMM ethods and REQUIREMENTS for INSTALLING Non-ResidentialUnderground Electric Services0 600 Volts to Customer-Owned FacilitiesRev. #25: 12-17-20063928 Page 2 of 6(1) Install PG&E approved secondary number 5 concrete box. See Document 062288 for orderinginformation.(2) Use approved secondary multi ways tap slices for PG&E to join PG&E s secondary cable to customerowned cable.

6 See Document 036640 for ordering The installation and maintenance of special fittings (explosion proof) and sealing compounds at both The type of cable required from the meter termination point to the connection point with PG&E. This section ofcable is customer owned, installed and Prior to cable installation, prove all conduits free and clear by means of a mandrel PG&E approved. APG&E-approved polyester, flat pulling tape, white with sequential footage markings every foot, and 2,500-poundminimum tensile strength (Code 560154), must be installed in all conduits and attached to an end The installation of a splice box is required whenever cable pulling tensions are exceeded, or a change incable or conduit size is required.

7 The applicant must contact the local PG&E office to determine Test bypass facilities are required for both single phase and three phase installations regardless of the Requirements11. If PG&E service conductors are to be run in a multiple conduit system, all phases and the neutral must beinstalled in each conduit that is PG&E will furnish and install the underground service conductors and make connections in the applicant sservice termination Potential water intrusion into service conduits and meter termination facilitiesA. Water intrusion into service conduits and meter termination facilities may occur if the source side of theservice facilities ( , secondary splice box) is at an elevation greater than the meter termination General Order 128, Rule requires Lateral ducts for services to buildings, through which watermay enter buildings, must be plugged or sealed.

8 C. When the intrusion of water into the service and metering equipment can be reasonably expected throughlateral ducts, the conduits must be sealed at both ends using one of the PG&E approved sealing methodshown in Document 062288. However, if the meter termination facilities are significantly lower than thesource side facilities, use the Rayflate Duct Sealing System (RDSS) conduit sealing system listed in Document062288. Also, the applicant is responsible for providing a means to prevent the accumulation of excess waterpressure in the service conduit system. This is accomplished by the following METHODS :(1) For wall mounted service and metering equipment install a splice box, outside, at the base of the riser tothe meter panel, or at a maximum of 6 feet away from the meter panel along the service run.

9 Use asecondary #3 slice box instead of a secondary #5 slice box for drainage purpose. Table 1 footnote 5shown in shown in Document 028028 does not apply when the #3 slice box is used for drainage purpose.(2) For indoor electric meter rooms below grade level, a reliable method of water mitigation and drainagemust be incorporated into the design of the meter room(s) to prevent the accumulation of Minimum service requirementsA. Install the number and size of conduits as shown in Table 2 on Page 4 and Table 3 on Page 5, based on themain service panel rating. No more than seven 5-inch service conduits will be supplied from any Install the number and size of conductors, as shown in Table 2 on Page 4, to meet the individual initial demandload.

10 Take load characteristics and growth into It is permissible to install a smaller transformer and fewer conductors to serve a long term initial load with theintent of INSTALLING a larger transformer and additional conductors should future load increase Always size the transformer pad to accommodate the largest transformer size necessary to serve thecombined ampacity of all services . Never exceed more than seven sets of conductors per Vacant ducts, if any, are to be used to serve future load Single main service panels fed by single transformerExample 1480 V, 4-wire, 1,600-amp rated main switch, initial demand load is 300 kVA. Install five 5-inch ducts, servicesize is 1,000 kcmil for phase and 350 kcmil for neutral.