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twak21 11-15-2012 09:48 AM

Transfer Switch Install for Portable Generator
Hi, after superstorm Sandy, we have ordered a 7500W Generac portable generator and a $300 8-10 line transfer switch - all on back-order of course. We have a 200 amp circuit breaker board with about 35 circuits listed, house is 12 years old. My electrical question - most transfer switch seem to only have 6 lines, will I have enough lines to have the generator connected to the board for my electric furnace, well pump, fridge/freezer, security system, and 2 rooms including TV, FIOS connection, lights and some kitchen appliances?

bobelectric 11-15-2012 10:13 AM

Well pump,2 circuits,furnace 1. fridge 1, the rest chase out. I like to use a 12 circuit sub panel with an interlock kit that gives you 8 spaces to use.

jbfan 11-15-2012 10:14 AM

Furnace no way.
Well pump could be pushing it.
What kind of kitchen applances?
You are looking at 30 amps at 240 volt with maybe a surge to 35 amps.

twak21 11-15-2012 10:42 AM

Thanks! We should have enough power for the survival equipment (furnace, well pump, fridge) and 2 rooms, microwave plus potentially the oven, added it all up to make sure we had capacity. The generator peaks at 9400 watts. Sounds like 10 circuits for the transfer switch should work? The fridge shares a GFI circuit with the TV for some reason.

jbfan 11-15-2012 11:02 AM

Is the furnace gas or electric?

twak21 11-15-2012 11:04 AM

Electric furnace/boiler

jbfan 11-15-2012 11:14 AM


Originally Posted by twak21 (Post 1052789)
Electric furnace/boiler

I doubt that will run on that size generator.

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