400 Amp (320) Underground Service on Panel

Download a PDF version: 400 Amp (320) Underground Service on Panel (PDF)

General Information for Underground Services

  • Member to supply conduit if underground service goes under a drive, conduit shall be 3-inch schedule 40 conduit
    unless otherwise specified by engineer
  • Minimum size underground service is 200 Amp
  • 400 Amp
    • #2/0 Copper or #4/0 Aluminum out of meter base to means of disconnect
    • 3-inch conduit to extend from bottom of meter base below grade 18 inches
  • Grounding
    • 2 ⅝-inch by 10-foot ground rods are required spaced at 6 feet apart and using #2 copper as the conductor
  • Meter Height
    • Meter base shall be installed 5 feet above finished grade

Entrance Location

No meter base or entrance shall be installed before a KV REMC engineer has checked the proposed location

The structure described below is to be furnished and installed by the member.

Diagram of 400 amp (320) underground service on panel. 200 amp main disconnect on both sides of meter. Meter base (furnished by KV REMC installed 5 feet above finished grade by electrician. 8-foot by 4-inch by 4-inch treated posts with 2-inch by 6-inch treated cross members.Member shall install #2/0 copper or #4/0 aluminum for each 200 amp disconnect from meter base to disconnect. Member to install 3-inch conduit or Gray Schedule 40 plastic conduit from meter base to 18 inches below grade. Conduit must have lock rings and insulator bushings/bonding bushings to be used with galvanized conduit. 2 ⅝-inch by 10-foot copper ground rods spaced 6 feet apart. Ground wire shall be in ½-inch conduit up to meter base using #2 copper as the conductor. Leave a 14-inch width from the center of conduit to allow for digging.