SinglePole
Member
This is a re-post of a question I had on Electrical Calculations/Engineering....
The utter lack of response there was disappointing to say the least (at least "charlie b" acknowledged it was a good question).
...a campground with clusters of cabins with common utility service. These "cabins" each have full kitchen, bath, HVAC systems. The electrician has it laid out so the owner is feeding a cluster of eight cabins from one utility meter. The meter is off a current transformer at the secondary of the utility transformer. The feeder from the transformer is to a 1200A main panel with a breaker and feeder to each cabin's own 200A panel. All single phase 120/240.
On his drawing the electrician sized the feed to the "main" panel using Article 220 Part IV Optional Method -- I thought this is just for multifamily dwellings. This is multiple single dwellings.
How should he have sized feeder and branches (NEC references)?
The utter lack of response there was disappointing to say the least (at least "charlie b" acknowledged it was a good question).
...a campground with clusters of cabins with common utility service. These "cabins" each have full kitchen, bath, HVAC systems. The electrician has it laid out so the owner is feeding a cluster of eight cabins from one utility meter. The meter is off a current transformer at the secondary of the utility transformer. The feeder from the transformer is to a 1200A main panel with a breaker and feeder to each cabin's own 200A panel. All single phase 120/240.
On his drawing the electrician sized the feed to the "main" panel using Article 220 Part IV Optional Method -- I thought this is just for multifamily dwellings. This is multiple single dwellings.
How should he have sized feeder and branches (NEC references)?
