>
>I'm wiring my new ham shack and am confronted with several different
>240V outlet types, some are 3 wire, and some are 4 wire.
>
>The question is: What is the number of wires in the typical commercial
>amp power line cord, one that should be run on 240V?
>
>I'm presently using a 3 wire input to my amp, which operates on 240V.
>The neutral line connects to the low side of the amp control circuitry
>which needs 120V. Chassis is connected to the station earth ground.
? With an unbalanced 240v load, if the chassis does not connect to
neutral in the mains breaker box, a potential for receiving a fatal
potential exists. .
>
>Should I use a 4 wire outlet and bring the power line ground from the
>breaker box to connect to the amp chassis?
? A 4-wire outlet is needed only if you are required to use a ground
fault interruptor.
> Or should the amp chassis be
>grounded only through the station ground, and power be brought in on a 3
>wire circuit?
>
? Whether a 4-wire or a 3-wire arrangement is used, the amp's chassis
should be connected to the Neutral wire in the breaker box through the
mains' power plug and outlet. .
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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