hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
I have main service switchboard that has 8 service breakers and no main breaker.
5 service breakers have existing feeders go to existing loads in building and are already wired to the loads i.e existing, 6th service breaker is spare and now going to have new loads, new feeders from breaker to new load and 7,8 are spare breakers nothing connected no load
Questions:
1. in the above scenario since their is no main breaker at service switchboard would adding sixth breaker new feeder new load require main breaker or not?
2. I heard some require if its more than 5 service breakers but the way I read is 6 max meaning more than 6 but not sure and want to confirm. Also I am confused because main switchboard 7,8 have breakers but they are spare would they count in determining NEC 2014 section 230.71(A)?
5 service breakers have existing feeders go to existing loads in building and are already wired to the loads i.e existing, 6th service breaker is spare and now going to have new loads, new feeders from breaker to new load and 7,8 are spare breakers nothing connected no load
Questions:
1. in the above scenario since their is no main breaker at service switchboard would adding sixth breaker new feeder new load require main breaker or not?
2. I heard some require if its more than 5 service breakers but the way I read is 6 max meaning more than 6 but not sure and want to confirm. Also I am confused because main switchboard 7,8 have breakers but they are spare would they count in determining NEC 2014 section 230.71(A)?