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Connecting Portable 15KW Generator to House

Posted on 11/2/20 at 10:51 am
Posted by Major Dutch Schaefer
Location: Classified
Member since Nov 2011
35156 posts
Posted on 11/2/20 at 10:51 am
I have a portable 15KW generator. In the past, I have just run various extension cords to the various items needing electricity. I would like to just have one connection to feed the house.

As the plug that produces the most electricity is 50 amp would that be the only one that is connected to the house? Would that not take full advantage of the generators electrical output? Currently, I have adapters for all of the outlets on the generator that allow for connecting extension cords. Below is the setup on the generator.



Posted by SkintBack
SoLo
Member since Nov 2015
1841 posts
Posted on 11/2/20 at 11:22 am to
I would almost rather not explain this to a non electrical person for fear of you KILLING YOURSELF. You take the cord that plugs into the 50A outlet, on the other end you strip in back to make a SUICIDE cord (SUICIDE YA HEARD). Wire to your dryer plug or some other 2 pole breaker that won't be used by the generator. Make sure the main breaker is off before doing any of this. Dammit man I hope you don't KILL YOURSELF.
Posted by dome53
Member since Apr 2009
1841 posts
Posted on 11/2/20 at 11:23 am to
If you want cheap and up to code, interlock and inlet will let you run 12kw on a single 50a cable. Someone that's more qualified than me may need to confirm that:

Interlock Get one that will work for your electrical panel. It's the legal way to hook up to your panel instead of a suicide cable to your dryer.

Inlet box Run this from panel to wherever you want to run your generator

You'll also need a 50 amp cable like this: LINK

The other option is a transfer switch.
Posted by notsince98
KC, MO
Member since Oct 2012
19966 posts
Posted on 11/2/20 at 11:26 am to
to do it right you need to install a receptacle for the generator outside and a manual transfer switch that will disconnect your incoming service line when you are connected to the generator.
Posted by Major Dutch Schaefer
Location: Classified
Member since Nov 2011
35156 posts
Posted on 11/2/20 at 12:18 pm to
Familiar with all suggestions above, I guess I should have asked can you get 15KW out of the 50 amp socket?
Posted by viv1d
Member since Aug 2017
1712 posts
Posted on 11/2/20 at 12:37 pm to
My best advice is call an electrician and properly have your house setup.
Posted by SkintBack
SoLo
Member since Nov 2015
1841 posts
Posted on 11/2/20 at 12:40 pm to
15000 watts at 240volts is about 62 amps. So no, 50 amps is not full load. You have a 50 amp main breaker on the generator. That is gonna hold you back. You could creep up beyond 50 without it tripping, for a while. Then it will trip. I would change that bad boy out to a 60 or 70 and let it eat. You could still use the 50A outlet as a 50, and then also plug into other outlets with cords.
Posted by Major Dutch Schaefer
Location: Classified
Member since Nov 2011
35156 posts
Posted on 11/2/20 at 12:52 pm to
quote:

You could still use the 50A outlet as a 50, and then also plug into other outlets with cords.


This is what I was thinking.
Posted by Macfly
BR & DS
Member since Jan 2016
9465 posts
Posted on 11/3/20 at 6:55 am to
I've had a Reliance transfer switch with a flush panel indoors and external outlet installed.
It's definitely worth it IMO because there's no need to fumble around with breakers and switches in the main panel.
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