[aprssig] Shack backup power

DALE wa7ixk at embarqmail.com
Sat Jun 4 21:50:34 EDT 2011

In my area if they hear a generator running they come and make you shut it down.
They are a little paranoid.
If a generator is running and feeding the grid all the air conditioners and
other stuff hooked up to the same transformer is goingto short out the generator and trip the breakers.
They also work on the line as it is hot any way.
Most dead short the line when it is being worked on.
very unlikely a generator is going to kill a lineman.
I use a suicide cord to hook mine up after I have tripped all breakers.
One main breaker kill the whole house.
I am thinking of putting in a transfer switch, but it is $200.00 just for the panel.
We get very few power failures any more.
When I did not have a generator we had a lot of them.
It is amazing what a back up generator can to to improve the grid reliability.
Worth Avery penny I spent and the generator is just like new and converted to propane.

----- Original Message -----
From: "Keith VE7GDH" <ve7gdh at rac.ca>
To: "TAPR APRS Mailing List" <aprssig at tapr.org>
Sent: Saturday, June 4, 2011 6:25:16 PM
Subject: Re: [aprssig] Shack backup power

Lee  K9WRU wrote...

> When I installed my automatic generator backup system I immediately
> talked to the foreman of the maintenance crew that serves my area. I
> told him that while I had a proper transfer switch (to disconnect me
> from the "grid" when my generator operates since there is an obvious
> chance for me to power the utility lines while they might be serviced--
> a very serious safety and legal issue) I still felt that there was always
> a chance that I might accidentally attempt to supply power to their lines.

If you have a properly wired transfer switch, it would be impossible
to feed to power out to the line. The transfer switch is like a DPDT
switch. Your panel is either connected to the line or your generator. 
The generator is never connected to the line.

In the case of generator haywired into the house wiring, there is a very
real possibility of human error and feeding power out to the line.

Grid-tie inverters are safe because they shut down if they don't see 
power coming from the line.

73 es cul - Keith VE7GDH
"I may be lost, but I know exactly where I am!"

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