[ICOM] RE: PW-1 220 VAC US wiring?

[Doug Renwick]

OK let me try and say it in terms that can't be confused.  There was no
typo.
If your amp only uses 240 vac single phase you only need a three wire
plug ... hot(red), hot(black) and ground(green).
If your amp uses both 120 vac and 240 vac then you need or should use a
four wire plug hot(red), hot(black), neutral(white) and ground(green).
The 120 vac will be taken from one of the hot(red or black) -
neutral(white) combinations.
In the past there were some short cuts taken in a three wire 240 vac
where the 120 vac was taken from one of the hot(red or black) and
ground(green) - not recommended!
This has nothing to do with regular 120 vac house wiring.

Doug

The water jump is long and the barrier may be high, 
you might break every bone, but it's so much fun to fly!

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
On Behalf Of Bob Kulow
Sent: July 20, 2008 1:22 PM
To: 'ICOM Reflector'
Subject: RE: [ICOM] RE: PW-1 220 VAC US wiring?

Doug, I think you made a typo - 4 wire for 240 VAC and 3
wire for 120 VAC.

73
Bob WA2UEH

> Here we go again.  Be sure of your facts before making a
> statement.  A
> four wire plug can be 240 vac single phase ... hot, hot,
> neutral and
> ground.  You need a four wire plug if your amp uses 120
> vac ... one hot
> and neutral, otherwise you only need a three wire plug.
> 
> Doug

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