In article , "RBM" rbm2(remove wrote:
That table only applies to dwelling services and their "main power feeder"
not to feeders in general

"For application of this section, the main power feeder shall be the feeder(s)
between the main disconnect and the lighting and appliance branch circuit
panelboard(s)." [Art. 310.15(B)(6)]

Note the deliberate inclusion of the plural in feeder(s) and panelboard(s).

Since the feeder in question runs between the service entrance panel (which,
in a single family dwelling, is the location of the main disconnect) and a
branch circuit panelboard, it appears to me to qualify.

As always, though, the local inspection authority has the final say, and it
would be best to ask their opinion -- since, in the end, neither your opinion
nor mine matters at all if the local inspection authority has other ideas.

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

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