PowerArc 140st input amps question

[MotoJ]

Noob here, with perhaps a dumb question...

I haven't received my 140st yet, but I did find the manual online and was reading that tonight. There's a table in it that lists Maximum Input Amps for the 140st
at 30. The 220 circuit I had intended to use it with is 40 amps. I had my box reconfigured to have the 40 for my 180 MIG. I don't have room to make an additional 30amp circuit.

I'm no electrician, but that sounds bad. Am I going to fry the 140st on the 40 amp circuit? Can I get some sort of resistor to put on my cord?

Thanks for any advice!

[undercut]

The maximum input amps defined in the 140st specifications is the maximum number of amps the unit will PULL from the box. The box amps are the maximum number of amps it can PROVIDE at any one given time.

If the box is rated to provide a maximum of 40 amps and your welder will only pull a maximum of 30 amps, you are fine and have spare capacity on that circuit. Hope that makes sense. Cheers and have fun when you welder arrives!

[MotoJ]

Whew!

Thanks. Man, I really need to read up on this newfangled electricity thing that's all the rage nowadays.

[Rambozo]

Whew!

Thanks. Man, I really need to read up on this newfangled electricity thing that's all the rage nowadays.

You will also need to get a plug for your new welder. You should get one that matches your MIG, so they can share the same outlet. Unless you plan to need them both at the same time. Two fisted welding?

[MotoJ]

Hi Rambozo,

Yup, already have a NEMA 6-50. You've been helping me out with my dumb questions about adapter cords in another thread. I'm spreading my ignorance over the whole forum!

Thanks for the help, guys!

[performance]

Want to blow your electrically frazzled mind??? The 6-50 is a 50 amp plug.

[MotoJ]

Aargh!
Yeah, I got that much.

[everlastsupport]

Aargh!
Yeah, I got that much.

You can use 6 gauge with it and run 50amps. Some of them you can swap the ground tip for 30 amps, but it is a 50amp plug.

[MotoJ]

Thanks. I know- I made a cord with 8AWG Seoprene, and I'm covering a 40amp circuit, so it should be all good, I think.