Fordean
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
I have to price out a project.
760 feet of 4 wire 208v 3phase Underground Exterior. 200 amp Service. Load at service is not calculable.
4 inch PVC
But I am guessing. Maybe 135 amps. For Large Block heaters for Generators. (Block Heat are supposedly 50 amp each 1phase) 4 units So far with 2 spares. Means center phase will be higher.
I used two different VD calcs. And two different answers. 1 said 3/0 still good to use. Which I feel hard to believe. Other said 250MCM should be used.. Which I feel is correct.
What size wire is correct. Just double checking.
Also How many handholds do I need and size. Planned on Using 48x48 x 36deep, Two separate areas. I plan on splicing somewhere (maybe once or twice). Would like to pull with none. But think its unlikely.
760 feet of 4 wire 208v 3phase Underground Exterior. 200 amp Service. Load at service is not calculable.
4 inch PVC
But I am guessing. Maybe 135 amps. For Large Block heaters for Generators. (Block Heat are supposedly 50 amp each 1phase) 4 units So far with 2 spares. Means center phase will be higher.
I used two different VD calcs. And two different answers. 1 said 3/0 still good to use. Which I feel hard to believe. Other said 250MCM should be used.. Which I feel is correct.
What size wire is correct. Just double checking.
Also How many handholds do I need and size. Planned on Using 48x48 x 36deep, Two separate areas. I plan on splicing somewhere (maybe once or twice). Would like to pull with none. But think its unlikely.
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