|
|
So I recently aquired a master craft ac230 arc welder my first step up from a 50 amp hobby welder. It was wired with three prong 240 plug and my house has only four prong 240. So I researched bit and found the info i needed. Let me know if I mucked up here..Black = hot (left/right/)Red = hot (left/right)Bare = ground (connected to shell)White = neutral (capped and not connected.)Assuming i got this correct should the outer shell be reading 240v on my voltage meter, when the machine is turned on... Im no pro at electrical work but that was cause for concern as I don't know if it will shock me or do absolutely nothing !! Help?
Reply:I'm not sure what you mean by "shell". If you are talking about connections at the plug, the left and right prongs are hot, the center prong is the ground. 4th wire, the white one in the 4 wire set isn't used.You should get 220-240 volts between the two hot hots. Anything grounded shouldn't have power..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:240v from shell to where ?Doesn't sound right,for any kind of circuit.
Reply:By "shell" I presume you mean the metal chassis and frame of the welding machine, which is considered the chassis ground or equipment ground..You SHOULD NOT be able to detect 240 volts when checking from a hot to the chassis ground. You should however, be able to detect 120 volts when testing between a hot and the chassis ground, and that will simply indicate that the chassis is indeed connected to the grounding circuit, as is correct.You should only be able to detect 240 volts when checking between the 2 hots.
Reply:Oh boy, why do I sense this isn't gonna turn out too well? Lincoln Power Mig 216Lincoln AC/DC-225/125Miller 625 X-Treme PlasmaMiller 211 Forney 95FI-A 301HF 91110Victor Journeyman O/PMilwaukee DaytonMakita Baileigh NRA Life Member
Reply:Firstly - I'm assuming you're in the USA. Discount this post if you're not. I can't figure out how you're measuring 240V to the "shell". It should only be possible to measure 240V on a meter when testing between the two hot legs (black and red). The voltage between any single wire and ground should be 120V (red or black) or 0V (neutral). Your wiring scheme looks correct at first glance for 3 wire 240V. Have you double checked the colors on the wire where they attach to the welder? If you're measuring 240V from the outer case of the welder or plug (areas that should be grounded) to the ground lug, then one of your hot legs is shorted to the frame of the welder somewhere, and you must be measuring between that short and the other hot leg. Definitely don't weld or even plug the machine in until you get this figured out, 240V at high amps is nothing to mess about with.
Reply:Originally Posted by KnoxSo I recently aquired a master craft ac230 arc welder my first step up from a 50 amp hobby welder. It was wired with three prong 240 plug and my house has only four prong 240. So I researched bit and found the info i needed. Let me know if I mucked up here..Black = hot (left/right/)Red = hot (left/right)Bare = ground (connected to shell)White = neutral (capped and not connected.)Assuming i got this correct should the outer shell be reading 240v on my voltage meter, when the machine is turned on... Im no pro at electrical work but that was cause for concern as I don't know if it will shock me or do absolutely nothing !! Help?
Reply:Shell? If you are indeed trying to use a dryer outlet, I would point out that welders shouldn't generally be used in laundry rooms. Instead of changing the plug, the better solution would be to keep the plug and have a proper 230 volt, 50 amp(?) outlet installed in a safe location for welding.If by "shell" you mean the outside case of the welder, then absolutely something is dangerously wrong if you are getting 240 volts from the outside case of the welder to anything. DO NOT PLUG IT IN! Do not touch it if it is plugged in. Turn the breaker off. Call an electrician. It is possible that the outlet is wired wrong.
Reply:im wondering how hes getting 240v on the case. and what hes touching with the other lead. if hes getting 240v to earth then something is wrong with the machine and its sending voltage through the ground wire.
Reply:black and red are hot white is the netural bare wire is equipment ground. be careful mr electricty can get you |
|
发表于 2021-8-31 23:07:16