In article , "rider89" wrote:
wanting to feed a branch box with a 60a breaker (#6 copper) thru EMT.

This may be a stupid question, but is there anything in the NEC to prohibit
using double #10's to get the amperage?

Yes, there is. Section 310-4 explicitly *permits* parallelling conductors of
size 1/0 or *larger*, and thus by implication prohibits it for smaller
conductors.

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Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.