[aprssig] Shack backup power

Lee Mushel herbert3 at centurytel.net
Sat Jun 4 23:41:13 EDT 2011

Well, Keith, not all transfer switches operate as you have described. 
Mine, for example, switches only those circuits I have chosen to have active 
under generator supply.   And it is correctly wired!   If you think about 
it, I'm sure you will see why this is the way it is done when the emergency 
source is expected to produce less power than the normal full load.   You 
are correct in that the generator is never supposed to be connected to the 
line but given the nature of  residential wiring (including mine) which 
"grows over time" bad things can happen and I would certainly hate to 
guarantee that there is no "cross connection."

And I will make my other point again.   It is very easy for someone to 
assume that if he has a solar panel and a grid tie converter he has 
something that will supply power when the commercial system fails.   It is a 
bit hard for me to understand how that will happen if the grid tie converter 
is part of the solar panel.   As I said, it seems to me that people are 
being a bit too aggressively "green."


Lee  K9WRU
----- Original Message ----- 
From: "Keith VE7GDH" <ve7gdh at rac.ca>
To: "TAPR APRS Mailing List" <aprssig at tapr.org>
Sent: Saturday, June 04, 2011 7:25 PM
Subject: Re: [aprssig] Shack backup power


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