In article . com, wrote:
If I want to run an appliance that needs 50 amps, is there any problem
with combining two 30-amp circuits of approximately the same length, as
long as the part that carries the full current is using properly-sized
cable? It seems like the circuit would have a 60 amp capacity.

To be Code-compliant, at a minimum, the two 30A circuits would have to share a
common disconnecting means (i.e. throwing *one* handle turns off *both*
circuits simultaneously).

I can't imagine that what you propose is permitted by the NEC, but I can't at
the moment find anything in the Code that explicitly prohibits it. The closest
I can come is:

"In no case shall the load exceed the branch circuit ampere rating." [Sec.
210-23, 1993 NEC -- the most recent one I have at hand.]


--
Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?