In article 2Omhh.501373$R63.440567@pd7urf1no, "Gary" wrote:
I want to connect a second electrical panel in my house. I am going to run
it from a 40 amp breaker in my main panel. The second panel I bought has a
100 amp main breaker in it. Is it code to keep that breaker in there?

Sure. Any overcurrent would trip the 40A breaker feeding the subpanel.

You *do* plan on running a 4-wire feeder cable to the subpanel, don't you?
(Black, red, white, and bare wires) Also make sure that (a) the subpanel has
two separate bus bars for neutral and ground, (b) they are not connected to
each other, (c) the neutral bus is NOT connected to the chassis of the
subpanel, and (d) you connect the white feeder wire to the neutral bus, and
the bare wire to the ground bus.

I assume it is redundant and would only act as a switch if I wanted to do some
servicing in the 2nd panel.

Correct.



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

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