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View Full Version : Can #8 copper be used on a 50 amp breaker?

dlfleming
Feb 9, 2007, 08:57 AM
Can #8 copper be used on a 50 amp breaker? Like a range or a Hot-tub?
tkrussell
Feb 9, 2007, 09:15 AM
Not if the cable is Romex or UF, these two cables only allow for a 40 amp CB.

If the cable is MC cable with THHN insulation, or conduit with THHN wire pulled, then a 50 amp CB can be used.