13.2kV Duct Bank boring
13.2kV Duct Bank boring
(OP)
I have a situation where I need to run 9 medium voltage cables in an underground duct bank. Looking at the NEC, if I run these in concrete duct bank I need to keep a 7.5” spacing center to center.
I have a client that wants to bore a 24” casing under a road and pull 9-5” pvc conduits in the 24” casing. The 5” conduits will be touching each other. Will this be to code? If the conduits are spaced 7.5” center to center with out concrete, will this be to code? I'm not very familure with boring and duct banks in bored holes any help would be appricated.
I have a client that wants to bore a 24” casing under a road and pull 9-5” pvc conduits in the 24” casing. The 5” conduits will be touching each other. Will this be to code? If the conduits are spaced 7.5” center to center with out concrete, will this be to code? I'm not very familure with boring and duct banks in bored holes any help would be appricated.






RE: 13.2kV Duct Bank boring
If you're buying a lot of cable, companies like Okonite or Southwire may be willing to do this calculation for you. The NEC does allow other configurations to be used under engineering supervision - meaning you need to calculate the maximum allowable current.
RE: 13.2kV Duct Bank boring
RE: 13.2kV Duct Bank boring
RE: 13.2kV Duct Bank boring