Bgg
Member
- Location
- Philippines
- Occupation
- Electrical engineer
Hi,
Can someone please elaborate/explain the clause in NFPA 20, see below:
9.2.3.4.1 (4) The trip point for circuit breakers shall not be field adjustable
I've been asking some fellow engineers regarding this clause and there were mixed ideas. Here are some interpretations:
Thanks for those who will share their ideas.
Can someone please elaborate/explain the clause in NFPA 20, see below:
9.2.3.4.1 (4) The trip point for circuit breakers shall not be field adjustable
I've been asking some fellow engineers regarding this clause and there were mixed ideas. Here are some interpretations:
- the circuit breaker should not have adjustable trip units
- the breaker can have adjustable trip units but once already set, it should not be adjusted at field and has to be locked.
Thanks for those who will share their ideas.