Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
I know this is exhausting cause it sure is for me.
So they changed the location of my temp 45 kva transformer.
Instead of 100' away from breaker feeding it they want it right next to the panel/breaker feeding it.
I do have some concerns with others plan as indicated below.
So.......
Loads are
(3) temp trailer panels 120/208v single phase.
Trailer A - load current draw is ~80A
Trailer B - load current draw is ~35A
Trailer C - load curent draw is ~35A
1. 277/480V 3P-70A breaker feeds primary of 45KVA step down xfrm 5' away.
2. 120/208v side of 45kva xfrm #3/0 goes to splice box 100' away. My concern here is don't you need a disconnect on the secondary side here and I believe a splice would not be allowed. We are splicing the 3/0 to (3) SER cables, a 3/c #2/0, and (2) 3/C #4
3. We are running those cables to (3) exterior disconnect switches.
So they changed the location of my temp 45 kva transformer.
Instead of 100' away from breaker feeding it they want it right next to the panel/breaker feeding it.
I do have some concerns with others plan as indicated below.
So.......
Loads are
(3) temp trailer panels 120/208v single phase.
Trailer A - load current draw is ~80A
Trailer B - load current draw is ~35A
Trailer C - load curent draw is ~35A
1. 277/480V 3P-70A breaker feeds primary of 45KVA step down xfrm 5' away.
2. 120/208v side of 45kva xfrm #3/0 goes to splice box 100' away. My concern here is don't you need a disconnect on the secondary side here and I believe a splice would not be allowed. We are splicing the 3/0 to (3) SER cables, a 3/c #2/0, and (2) 3/C #4
3. We are running those cables to (3) exterior disconnect switches.