Oversized conductor

[karn]

I imagine 2/0 wire won't fit into a 65-amp Square D breaker. What's your opinion on pulling 2/0 wire through an already crowded panel and using lug adapters versus running #4 copper from the breaker to a junction box below the panel and splicing the #4 copper to 2/0 aluminum with Polaris connectors?"

 

[electrofelon]

I would just use one of these in the panel to transition to #6 (why #4?) , as they take up the least amount of space. Note a 2/0 compact will fit in a port marked 1/0.

ALUMINUM SPLICER-REDUCER 14-1/0

ALUMINUM SPLICER-REDUCER 14-1/0

www.elecdirect.com

 

[electrofelon]

heres a 2/0 also:

https://www.gordonelectricsupply.com/p/Morris-90615-2-0-Alum-Splice/6288126?text=Morris+90615&lsi=true

 

[karn]

I was considering #4 because it's closer in size to the 2/0, compared to the #6. Also, the 2/0 wire is running about 600 feet to an RV panel with a 50-amp breaker powering a NEMA 14-50R, so I'll probably need to step it down again at the other end to fit on the lugs in the RV panel. I just wanted to make sure the connections are as solid as possible.

 

[ptonsparky]

6 or 4, whatever you have in the scrap pile. It will make no difference in VD for the lengths you are using.

 

[infinity]

I was considering #4 because it's closer in size to the 2/0, compared to the #6. Also, the 2/0 wire is running about 600 feet to an RV panel with a 50-amp breaker powering a NEMA 14-50R, so I'll probably need to step it down again at the other end to fit on the lugs in the RV panel. I just wanted to make sure the connections are as solid as possible.

Just curious why a 65 amp breaker if it's feeding a 50 amp breaker in the RV panel? If the panel is exceptionally crowded I would go the junction box route and use Polaris style connectors.