On Sat, 2006-09-23 at 11:09 -0600, Ron wrote:
Ed,
Not knowing all the particulars of the circuit feeding into your shack my
suggestion may not be relevant, but here goes anyway. If your 110 VAC 3
wire circuit in the shack is dedicated to that location (as in it does
not
serve other outlets prior to entering the shack), you should be able to
install a 220 VAC circuit breaker of appropriate amp rating for the wire
gauge at the panel and feed the circuit to the shack from this new
breaker
giving you 220 VAC to the shack. Install a new sub panel in the shack
and
provide an earth ground for the new sub panel and split off 220 and 110
VAC
circuits in your shack from this source. Once you have this installed,
you
can use the 220 VAC amps. Surface runs of EMT are cheap and quick to
install. This improvement may require an electrical inspection and permit
from the local building code folks.
Ron
KA7U
This will not pass inspection. You are trying to supply a subpanel that
requires a 4 wire cable with a three wire cable. The addition of a local
ground rod does not meet the code requirements, nor is running the
neutral in the bare conductor in the romex allowed by the code. Nor is
running 120 volts on the white conductor.
It will work but with much reduced shock safety. Don't do it.
--
73, Jerry, K0CQ,
All content copyright Dr. Gerald N. Johnson, electrical engineer
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