hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Attached sketch shows 120/028V, three phase, 1600A main service building disconnect located on the outside wall of the building. Load side of the service disconnect I have 2 sets of 250kcmil AL conductors routed 160 feet inside the building to 200A fused disconnect labeled Disco #2 which then feeds tenant Panel A. Also Disco #2 has GEC going to common ground.
There are three more additional feeders from main service disco that feed Disco #1, Disco #3, Disco #4 all grounded (not shown)
All this is in commericial multi tenant building.
The questions are following:
1. Does attach sketch comply with 240.21(B)? If yes or no then which rule 10 feet, 25 feet or outside?
2. Does attach sketch bring Article 225 into question outside feeders to building?
3. Not sure why Disco #2 is grounded. Which code says to do that?
4. Is their a need for disconnect to be located right at the point of entry of entrance of feeders coming into building? If yes then which code section.
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There are three more additional feeders from main service disco that feed Disco #1, Disco #3, Disco #4 all grounded (not shown)
All this is in commericial multi tenant building.
The questions are following:
1. Does attach sketch comply with 240.21(B)? If yes or no then which rule 10 feet, 25 feet or outside?
2. Does attach sketch bring Article 225 into question outside feeders to building?
3. Not sure why Disco #2 is grounded. Which code says to do that?
4. Is their a need for disconnect to be located right at the point of entry of entrance of feeders coming into building? If yes then which code section.
Sent from my SM-G935U using Tapatalk