Stupid home wiring ?

[Milner]

How can I connect 3 large gauge wires together?

Heres what I have....
Main feed out of the meter goes into a small box. In that box it is wire nutted to the main line feeding the panel in the house.
I want to tap it from here to take power to my rv box for the welder....
The rv box has a 220 and 110 plug with breakers ready to go, just needs power to it.
I can not find wire nuts big enough to conect all 3 wires together.
Any ideas?

 

[ALF]

mini distrubution panel would be the best prefferably with its own breakers

 

[Ohms]

Unhook all the wires Mark. Don't even bother to turn the power off. Then touch them all together and let them weld themselves. Instant wire nut

 

[Tacoma]

yeah... just stand off to the side a little.. and go fast.

Mini box is a good idea.

 

[JackKeslerCustoms]

Not just a good idea, but safe also. Those mains should be too big for a wire nut.

 

[Milner]

Unhook all the wires Mark. Don't even bother to turn the power off. Then touch them all together and let them weld themselves. Instant wire nut

You know how scarey the wiring is here!! I'm afraid to toach anything!!