100 Amp Sub Panel Wire Size Chart. To calculate the breaker size simply divide the adjusted wattage by 240 volts to find the rated amperage needed for your subpanel. What size wire for 100 amps If you need a 3-3-3-5 copper SER cable to run 100 amps you can use it after searching a lot.
How To Wire A 100 Amp Sub Panel From A 200 Amp Main Panel On September 5 2021 by Vaseline. Just bought 30 for 325000m. Needs to be buried in a conduit.
Please check with your.
If the 125 amp load is a sub distribution panel that is not going to be fully loaded to 125 amps then using the exact connected load which might be smaller than 125 amps will effect the wire sizing. Please check with your. For example if the load calculation comes out to 48 amps you should use a 50-amp breaker. Needs to be buried in a conduit.