In article t,
Jim Wilson wrote:
Robert Bonomi wrote...

You know not that of which you speak.

Yep, he was mistaken in that...


U.S. National Electrical Code allows *SIX* #10 wires in 1/2" conduit, with
appropriate insulation -- e.g. THHN.

And it _can_ be done, over short distances, with a limited number of bends .
I _know_, because I've _got_ a circa 8' section, that is so loaded.
It was a *real* b*tch to pull the wiring, particularly past the 3rd bend.


What was the derating factor?

Didn't come into play. Only 4 hot leads. (two pairs of 3-wire 'Edison'
circuits)

However, outlets were 20Rs, so I breakered the circuits at 20A ea.