Underground Service Entrance Cable Requirements

12 2 12 gauge 2 conductors.

Underground service entrance cable requirements.

Minimum 6 copper ground wire securely stapled to wall. Single phase underground service meter installation figure 9. Type se or service entrance cable having a flame retardant moisture resistant covering or type use which is service entrance cable identified for underground use having a moisture resistant covering but not required to have a flame retardant covering. Cu copper.

Nec 300 5 underground wiring conduits and raceways direct buried cable or conduit or other raceways shall meet the following minimum cover requirements. Service entrance disconnect and location shall conform to the latest version of the nec and all local ordinances. Any conduit crossing under a road shall be schedule 80. Direct burial cable rigid or intermediate metal conduit non metallic raceway pvc 24 inches 6 inches 18.

Al aluminum conductor. 14 2 wg 14 gauge 2 conductors with ground etc. Conduits installed less than 36 inches in depth require cooperative engineering approval and shall beencased in concrete to cooperative specs depths specified are to finished grade. For service entrances of 201 to 400 amperes as determined by the nameplate ampacity of the service disconnect a rain tight current transformer enclosure constructed of code gauge metal with an approved mounting base for bar type current transformers shall be used.

600 v maximum voltage rating for typical residential nm electrical cable. 4conduit minimum depth 36 inches. Requirements for nonmetallic conduits nonmetallic conduits or raceways approved for buried cable give less protection than metal conduits and require greater burial depths. Current transformer cabinets overhead or underground service window type ct s figure 11.

Meter base mounted on exterior wall of house or mobile manufactured home. For overhead service weather head must be a minimum of three feet above the roof. 14 2 14 gauge 2 conductors etc. Single mobile home underground service pressure treated post figure 9a.

Single mobile home underground service alternate meter pedestal figure 10. According to 338 2 there are two types of service entrance cables. At 24 inches you can bury underground feeder cable using pvc conduit to 18 inches below ground only where the wire comes up. A disconnecting means must be provided for all.

How to translate the electrical wire markings on nmc cable. For underground service the poured footing must be notched out for the conduit.