Based on the 2023 NEC. Question: Conductors installed under or encased in not less than _____ of concrete are considered to be outside of a building. See answer below. Answer: 2 in. Explanation: ...

Question: What is the maximum ampacity of a 3-phase feeder consisting of 3 - 4/0 and 1 – No. 4 GND in a 2-in. PVC conduit? The feeder is installed underground to a remote building. All conductors are ...