Date:         Sat, 11 Apr 2009 15:48:35 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      WARNING!!! Re: gfci outlet buzzes with inverter
Comments: To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
In-Reply-To:  <49E0AE53.2040503@gmail.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 10:50 AM 4/11/2009, Rocket J Squirrel wrote:
>To test this theory: from the inverter's hot wire, connect a 1,500 ohm
>resistor to chassis and measure the AV voltage across that resistor.* The
>resistor simulates the conductivity of your body and is sufficiently low
>so that it will bleed down the trivial leakage (if any) within the

DON'T DO IT!!!!!  At least not with an ordinary small resistor.  I
didn't say they were floating, I said that they were BOTH hot to
ground, 180 degrees out of phase.  If I'm correct, your resistor will
be dissipating 4+ watts from either leg to ground.

Again, if I'm correct, and I'll test that later with my little
inverter, each leg will be about 57 volts (RMS) to ground.  Right now
I've got a cat that can't pee, and that takes precedence.

I could well be wrong, but in the meantime make sure you use a power
resistor for your test.  A 40w incandescent bulb would be favorite...

Cheers,
David

  --
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'89 Po' White Star "Scamp"