2/0 into 100AMP breaker

[rbragg]

I am still trying to get all my stuff together for my sub panel install. I will be running 2/0 aluminum wire 175-200 ft. It was brought to my attention that the 2/0 probably won’t fit into the lugs of the 125 AMP breaker. I thought this but just overlooked it. So my question is what are my options for connecting the 2/0 to the 100 AMP breaker in the main panel?

 

[tysonxj]

Find an adapter that is compatible with your breaker / panel.

 

[mike93lx]

Step down to smaller wire

 

[MattT]

Have you confirmed the 2/0 wont fit? At least some 100A breakers accept 2/0 so check the specs for your breaker if you haven't already done so.

 

[tysonxj]

After further thought, I would imagine your panel will accept 2/0. Mine did.

 

[u2slow]

I have bought crimp-on ends for 350kcmil wire to make them fit in std 200A lugs. Boy were they expensive.

Its been my experience you can often fit one size wire larger into a lug. Not saying it right... just that it often fits.

 

[teamextreme]

If it won't fit, you'll have to use the crimp-on reducer ends u2slow mentioned.

 

[Kevin Essiambre]

If it won't fit, you'll have to use the crimp-on reducer ends u2slow mentioned.

They also make set-screw ones if he doesn't have access to a crimper.

Sent from my new phone. Autocorrect may have changed stuff.

 

[OneOfEm]

After reading a lot of threads on this topic here, I used these Polaris clones to drop to a short length of smaller wire: https://www.amazon.com/gp/product/B005GDFQQE/?tag=atomicindus08-20

My inspector didn't even blink when he saw how I'd connected the feed.

If you have room in your panel, they may be an easy option.

 

[Aceman]

2/0 compact aluminum should fit a 125 amp breaker, it's not an issue.

 

[sberry]

Get an adapter for the ground bar while you are at it to accommodate larger wire also.