I just recently got a 6250 watt generator and would like To install a inlet plug so I can plug the generator into my house. I have done some research but I am stuck now. There is currently a double 50 breaker in my panel that runs outside to a disconnect box. This use to be the power supply to s hot tub before we moved in. The double 50 breakers are in the right location so that I can install a interlock switch in the panel. My plan is to remove the disconnect box outside and install a inlet plug for the generator. Here is where I’m confused. I’m assuming that the wire that is run to the disconnect box is some heavy gauge stuff right? My generator is only a 6250 watt 20 amp generator. The inlet plug that I will need is a l14-20 plug. Will the I be able to wire the that heavy gauge wire to a L14-20 inlet plug? Or do I have to get the proper gauge wire and run it all the way back to the panel? Also I have no interest in getting a sub panel for this set up.

 

A 6250 watt generator should be using an L14-30..... 30A plug and receptacle.
Check the gauge of the wiring. It should be on the cable jacket. It's most likely #6 but could be #8.

 

And assuming you use the 30A inlet as Pete suggested, it only requires 10ga wire. BUT, if you have #8 or #6 already run, there's nothing wrong with using larger wire... you just might need a slightly larger box to make the bends in the cable.

Sounds like a pretty easy project. What make/model generator is it?

 

Thanks for the response. The plug on the generator is a l14-20 that’s why I assumed I would need one for the inlet plug as well. The generator is a Coleman.

 

Hi, first determine what size cable you have going to the panel, # 8 or 6 , to make the connections to the L14-30 inlet you will have to use pigtails, 6 or 8 will not fit into those terminals.
Geo

 

I assume the existing wire off of the 50A breaker is a 3 conductor plus ground so that you have a neutral?

 

Ok I’ll get pig tails yo
make the connection. Thanks for the advice. Im not sure what gauge wire is there. Does it definitely have to be a l14-30 Inlet even though the generator plug is a l14-20?

 

This is the plug that fits into the generator

 

So should I buys a L14-20 cord and a 50 amp inlet box then off the inked box put a L14-20 x L14-50 adapter?

 

The inlet should be sized to match the generator. If the generator is L14-20 then use L14-20 inlet.

 

Your link is to the location IN your phones browser where the picture is located.
How-to-insert-pictures.

A 6500w generator should be using an L14-30 receptacle. An L14-20 is only rated for 20A or 4800w.
Has it been changed to an incorrect receptacle ?

 

This is the generator right here. It says that it comes with a 20 amp plug. Not sure why it’s not a 30. I have a 3000watt Honda that has a 30 amp
plug but not sure why this 6250 watt one only has 20.

https://www.electricgeneratorsdirect...ator/p926.html

 

I bought a 20 amp generator cord yesterday and bought a 30 amp inlet box. I got a 30 amp
plug that I’ll put on the female side of the generator cord so I can plug into the inlet switch.

 

It comes with a 20 amp plug because it is a 5000 watt or 20 amp generator.
6250 is the surge rating for a large item like a motor that draws high current on startup but less when it comes up to speed.

 

Apparently it was a cost savings to use the smaller receptacle.