Residential Power
Residential Power
(OP)
I am considering adding an additional 200 amp service to my house that presently has a 200 amp service.
In order to understand the magnitude of the project, I would like to know if new power lines need to be installed to the house (pole to meter).
Is there a standard supply service to residential installations (pole to meter), i.e. 400 amp total, 200 Amp nominal breaker panel, therefore 200 amp overhead, or do most installs match cable size to house rating?
In order to understand the magnitude of the project, I would like to know if new power lines need to be installed to the house (pole to meter).
Is there a standard supply service to residential installations (pole to meter), i.e. 400 amp total, 200 Amp nominal breaker panel, therefore 200 amp overhead, or do most installs match cable size to house rating?






RE: Residential Power
RE: Residential Power
RE: Residential Power
RE: Residential Power
RE: Residential Power
"Standard UL489 MCCBs are calibrated for operation in a 25C room ambient temperature. Given this 25C room ambient, the enclosure or panelboard designer is required to limit the ambient within his enclosure to 40C. When operated in this 40C enclosure ambient, the breaker is rated to continuously carry 80% of its nominal rating without overheating or nuisance tripping. If the MCCB is marked "100% Equipment Rated", it is capable of continuously carrying 100% of its nominal rating when operated in a 25C room/40C enclosed ambient temperature. For other ambient temperature operating conditions, derating factors must be applied."
Above cut and pasted from :
http://www.geindustrial.com/industrialsystems/support/technical/tip11.htm