[AMRadio] 220 vac line

[J. Mark Bolton]

The 127 VAC is unquestionably high. Particularly reading that at the
convenience outlets (the point of utilization). You say 127 is normal for
your location? Perhaps so, I don’t know how long you have known it was that
high. But what could be the situation is a substation or down line voltage
regular could have been stuck in the full "raise" position then gone
undetected for weeks or months. Finally the electric utility became aware of
it and changed it out (or replaced the control panel) and now it is
regulating at 126.6.

I say all this because I've experienced it numerous times (I work for a
Cooperative electric utility) when a regulator would fail either in the full
"lower" or full "raise" mode.

There are so many things it could be -- Even air conditioning load on the
distribution circuit. But that's what a voltage regulator is supposed to do
-- maintain roughly the same voltage set point as the load varies.

Good luck!

Mark
KA4CID

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of BILL GUYGER
Sent: Monday, July 25, 2011 7:28 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] 220 vac line

Everybody's A/C units loading it down?

Bill




________________________________
From: rbethman <rbethman at comcast.net>
To: Discussion of AM Radio in the Amateur Service <amradio at mailman.qth.net>
Cc: Rick <rickb at tx.rr.com>
Sent: Mon, July 25, 2011 2:34:06 PM
Subject: Re: [AMRadio] 220 vac line

We are having a *little* Brown out up here.

Normally my 120VAC receptacles show 127VAC.  Right now they are showing 
123.6VAC.

Yep, the 240VAC reads at 247.3VAC.

Bob - N0DGN

On 7/25/2011 3:16 PM, Rick wrote:
> Thanks Bill and all others. What threw me off or at least made me 
> wonder was the sub panel addition. In the main panel the white 
> (neutral) and ground (bare) are tied to the same grounding buss, but 
> in the sub panel the white goes to an isolated buss and the bare goes 
> to the grounded buss. I understand why, but was a little leery about 
> which I should use as a ground return since the 220 (actually, mine is 
> 237 - but old habits die hard) is coming from the sub panel. Grid leak 
> bias was easier for me to get through my thick head. HI HI Thanks 
> again to everyone! Rick / K5IAR 
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