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Old 08-29-2011, 02:22 PM   #1
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Will I need a new transfer switch box...?


Greetings:

An electrician install a switch box so my sister can plug the Generac 6250W gazoline power generator into it in case of a power outage. Now she want to install a 15kW standby generator. Will she need a new transfer switch box? What brand is most reliable and easy maintenance? What is the price range of such installation if she already has the Gaz line for the barbecue grill in her backyard?

Your comment and advice is greatly appreciated.

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Old 08-29-2011, 02:33 PM   #2
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Will I need a new transfer switch box...?


A typical automatic transfer switch would have a greater capacity due to the larger standby generator. The inlet will not be large enough for the bigger generator. Permanent gensets are typically hardwired also.

There is no way a cost estimate can be given. There are too many variables.

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Old 08-29-2011, 03:27 PM   #3
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Will I need a new transfer switch box...?


Tell me about this existing "switch box" that she has for her portable generator hook up. I am curious.

Last edited by Code05; 08-29-2011 at 03:30 PM.
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Old 08-29-2011, 04:35 PM   #4
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Will I need a new transfer switch box...?


To fully utilize a standby generator, an automatic transfer switch is the way to go. Your sister wouldn't have to do anything in the event of a power failure, or when the utility power returns. Quick and simple.
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Old 08-31-2011, 04:18 PM   #5
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Will I need a new transfer switch box...?


Thank you all for your help.

Here are two pictures showing my sister current transfer switch box.

As for the Standby generator brand, can anyone recommend a good reliable brand? Costco sells Honeywell 15kw for ~$3300 with transfer switch box.
Amazon sells Generac 8kw for $2159 but the rating seems to be low. If it were you which one will you pick?
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Old 08-31-2011, 04:22 PM   #6
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Will I need a new transfer switch box...?


I have a Generac, but just an 8K. It came with the automatic transfer switch and just about all necessary wiring. I've had it for 2 years now and have had no problem with it whatsoever. My advice to you is shop around. The prices are all over the map. I purchased my generator for $1829. The generator you show from Amazon is the generator I bought. Your existing transfer switch is common for plug in type generators.
I purchased my generator from WWW.Norwall.com

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Last edited by Missouri Bound; 08-31-2011 at 04:27 PM.
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