I have a 100Amp sub-feed to a remote building. I am running 4/0 to due to the voltage drop. The maximum wire size for the lug on the main breaker is 1/0. I have a pull box 40' from the breaker, can I down size the wire to 1/0 at this point? I don't want to overfill the panel with lug splices if I don't have to.
Terminating Oversized Cables
- Thread starter ketchup
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
ketchup said:
Sure you can downsize anywhere but the closer to the panel the better.
weressl
Esteemed Member
ketchup said:
ILSCO offers reducing lugs, they really do not use that much space. There should be no problem using the JB as long as you have sufficient space.
ceb58
Senior Member
- Location
- Raeford, NC
What is the distance of your run? 1/0 would be good for up to 327ft.
chevyx92
Senior Member
- Location
- VA BCH, VA
Where did you come up with that? He didn't mention single or 3 phase nor the voltage.ceb58 said:
ceb58
Senior Member
- Location
- Raeford, NC
chevyx92 said:Where did you come up with that? He didn't mention single or 3 phase nor the voltage.
OK, my bad 1/0 would be good for 283' at 240v 1ph to cover vd.
4/0 would be good for 575'.
IF that is what he is working with.
winnie
Senior Member
- Location
- Springfield, MA, USA
- Occupation
- Electric motor research
Here is another thread describing various fittings to answer this exact problem.
http://forums.mikeholt.com/showthread.php?t=87938
-Jon
http://forums.mikeholt.com/showthread.php?t=87938
-Jon
- Status