Electrical pt.2

Ok, so I looked at the 50A circuit installed in the basement.

The socket is a NEMA 50-R: three prongs; polarized and a round prog. A 50A,
240V model of the three-prong 120V, 15A socket. Inside its box, red, black
and white wires connect to their respective terminals. A bare wire grounds
the box somewhere (I forget if it's at the box, or at the EMT). EMT runs up
the wall and turns into a four-wire cable, which runs along the ceiling back
to the panel. At the panel, white (neutral) and bare are grounded to the
common buss, while red and black go to the breaker.

My questions: is the white wire suitable for circuit current, i.e.,
utilizing the circuit as 120-0-120 rather than just 240V? It is the same
guage as the hot wires. Is it a good idea to ground a chassis to neutral?
Seems odd to me to ground to a current-carrying wire, but there are only
three prongs. Should the project be bonded to ground with a seperate wire?

Tim

--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms


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