hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
I have 150kva transformer 208V delta three phase utility side and 480V wye solar panel side three phase.
All install indoor. The 208V side disconnect with fuse is 80 feet away while 480V disco is less than 10 feet away.
Question:
1. I am not sure how this would work which is primary and which is secondary. However does NEC 2014 section 650 or 240.21(C) or any other code section apply and 208V side disco which is 80 feet away needs to be less than 10 feet away from transformer?
2. Grounding electrode conductor size transformer should be based on what 480V conductors or 208V conductor? Does NEC 2014 address? If so then which code section?
3. Is their solar transformer as 208V delta to 480/277V wye? If their is such a thing then 208V side need neutral?
All install indoor. The 208V side disconnect with fuse is 80 feet away while 480V disco is less than 10 feet away.
Question:
1. I am not sure how this would work which is primary and which is secondary. However does NEC 2014 section 650 or 240.21(C) or any other code section apply and 208V side disco which is 80 feet away needs to be less than 10 feet away from transformer?
2. Grounding electrode conductor size transformer should be based on what 480V conductors or 208V conductor? Does NEC 2014 address? If so then which code section?
3. Is their solar transformer as 208V delta to 480/277V wye? If their is such a thing then 208V side need neutral?
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