SHOP PRODUCTS
Houzz Logo Print
webuser_734346224

will huge wire fit on 100 amp breaker?

consed
4 months ago
last modified: 4 months ago

I have an old Cutler Hammer 175amp panel that is jammed full so I am going to put a new 100amp

subpanel next to it. My plan is to take out enough breakers from my old panel to insert a 100amp Cutler Hammer breaker and run wire from that to a main-lug new subpanel right next to it.

I understand https://learnmetrics.com/100-amp-wire-size/ that given the derating, I will need 1/0 copper (or even larger if aluminum) wire to go those 2 feet from one panel to the other.

But will that huge wire fit onto that 100 amp breaker? The vendor selling the breaker https://www.amazon.com/100-Amp-Circuit-Magnetic-Protection-Warranty/dp/B0CBV3BX6J/ref=sr_1_3?crid=255NR55VRL47B&keywords=100+amp+breaker+CH&qid=1697486828&sprefix=100+amp+breaker+ch%2Caps%2C172&sr=8-3

tells me that the hole in the breaker for the wire is about the size of #10 AWG. Even if it is #8 or #6, that sure is a lot smaller than 1/0 wire!

How is this normally handled?

Thanks in advance!

Comments (9)