[RE-wrenches] Trench Wiring - Ampacity Derating

Corey Shalanski corey at joule-energy.com
Sat Aug 5 14:36:15 PDT 2017


How should we treat direct burial wires in a trench for ampacity derating
purposes?
- Should they be considered "in a raceway or cable"? [NEC 310.15(B)(3)(a)]
- If it is determined that "spacing" must be maintained, what minimum
spacing is acceptable/permissible?

I would be interested to hear what means and methods others have used to
deal with this issue.

--
Corey Shalanski
Joule Energy
New Orleans, LA
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