Ron, With your post and what I found on the net, I am about ready to install a transfer switch with the help of my sighted wife.
Thanks again for the help. RJ ----- Original Message ----- From: Ron Yearns To: [email protected] Sent: Sunday, January 13, 2008 20:38 Subject: Re: [BlindHandyMan] Transfer switch Well took a little time, but found the full load amperage chart in the code it is 440--148 in the 96 NEC. Anyway a one horse at 230 volt calls for 8 amps and I took the liberty of looking at one forth and one third horspower motors at 120 volt and they are 5 and 7 amps. Guessing fridges, freezers, sump pumps and furnance motors to not be larger than one third each I think a 30 amp switch will work. If you split the four 120 volt motors and just estimate a little high at 7 amps each plus the 8 amps of the pump you get a total of 22 amps per leg. The generator is capable of producing 26 amps per leg. yes watts is volts times amps. So with a 5700 total watts at 220 volts you get a amps of 26. 5700 divided by 220. I doubt if all of these motors will ever run at the same time or more importantly start at the same. Instat starting on some motors can be as much as three times the running current. I myself would put them all on together and see what happens. For breakers in the six circuit panel. A two pole for the well pump and a single pole for each of the other items and a two pole 30 amp can sub feed this during regular times. This is providing you are not running other outlets with any of these appliances are heavy lighting loads are with these motors. Ron ----- Original Message ----- From: RJ To: [email protected] Sent: Saturday, January 12, 2008 7:14 PM Subject: Re: [BlindHandyMan] Transfer switch That sure was a typo. And yes, I am planning on using a manual transfer switch. I also know that the generator isn't large enough to run every thing and will have to pick and choose. The freezer, refrigerator, and sump pump isn't a problem, but the well pump might be. If my memory serves me right, one figures out the watts by amps times volts. The well pump is a 1 horse and I can't remember how to figure watts by horse power. RJ ----- Original Message ----- From: Ron Yearns To: [email protected] Sent: Saturday, January 12, 2008 19:43 Subject: Re: [BlindHandyMan] Transfer switch Do you have a horsepower rating or the full run amperage on that 220 volt well pump. The same for the sump pump. Are you going to manually turn the individual breakers on as needed during this time? By the way a 5.7 kw generator puts out 5,700 watts not the 55 thousand, but maybe that was a typo. Ron ----- Original Message ----- From: RJ To: Handyman Sent: Saturday, January 12, 2008 1:44 PM Subject: [BlindHandyMan] Transfer switch I am planning on putting in a transfer switch and sub-panel for my generator that is a 5.7 K or running at 55700 watts. Should I put in a 30 amp or forty amp transfer switch with a 6 circuit panel. What I will be placing in the sub-panel is a circuit for each of the following. refrigerator, freezer, sump pump, furnace, and a 220 well pump. I am not planning on running all the above at one time, while running the generator. I will be placing a circuit breaker in the main to hook up the transfer switch and removing the above circuits for the appliances from the main box and placing them in the sub-panel. RJ [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
