150 Amp Breaker Wire Size. If this is a dwelling you may use 1 cu or 2 0 al for a 150a service between the meter and the main breaker per table 310 15 b 6. 60 c 140 f 75 c 167 f awg mm copper.
You ll need to use 1 0 which has a cu max rating of 150 amps. This is a dwelling and the wire is to connect between the meter and the 150 amp main breaker. For a maximum of 30 amps you ll need a wire gauge of 10.
Breaker can only be loaded to 80 but the frame size of the breaker is actually a 100 amp.
Loading the breaker to a full 40 amp is ok. Listed in table 2 and 4 is 100 value and wire can be loaded up to 100. If this is a dwelling you may use 1 cu or 2 0 al for a 150a service between the meter and the main breaker per table 310 15 b 6. You must use the correct size wire for the current.
