Thanks, Hal!
Nothing in the amp depends on 120 VAC return path to neutral (I
double checked). I used 3-conductor SJOOW "water resistant" wire,
16-3. It says it's rated to 300 V, not 600 V, which was a surprise.
So far, no smoke.
Your point is a good one, though: any 240 appliance that expects to
use the neutral for 120 applications needs to be a 4-wire system.
I've gone to some pains to isolate my station RF ground from the
mains ground and it isn't always straightforward...
Kim N5OP
At 09:36 AM 3/4/2007, you wrote:
>Kim,
>
>Is the amplifier a 120 volt or 240 volt edition?
>
>If it's a 240 volt, you might consider upgrading the power cord to
>a four-conductor, Hot-Hot-Neutral-Ground, so as to provide
>a separated Neutral where no a.c. return goes on the chassis
>ground lead. It's a recent upgrade to better safety with
>240 volt appliances that incorporate return conductors
>from either of the 240 volt legs to a common.
>
>Secondly, with either a 120 volt or 240 volt cord you
>might consider upgrading to type SO, or SOW, or SOOW
>cord. These are rated for wet locations and have 600 volt
>insulation characteristics. You would more than likely
>need to procure a flexible cord connector for the chassis
>that's rated at the cord diameter, (e.g., 10-3, 10-4 SO, etc.),
>but it sure makes a beautiful, sturdy and long-lasting
>addition to your appliance.
>
>Hal Mandel
>W4HBM
>
>
>[snip]
>The cord is standard 3-wire rubber-jacketed cord.
>To my surprise, there was no flexible insulation left anywhere.
>[snip]
>
>
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