Q. What are the Code requirements for overcurrent protection for ungrounded conductors?
Find the Answer
A. A fuse or circuit breaker must be connected in series with each ungrounded conductor [240.15(A)]. Circuit breakers must automatically (and manually) open all ungrounded conductors of the circuit, except as follows [240.15(B)]:
1) Multiwire Branch Circuits. Individual single-pole breakers with id