With 220v which is the ground

My mistake with the terminology. I thought V and V were interchangeable terms. NEMA 10 devices are a curious throwback to an earlier time. I have been working on this and am going back to read this thread to see every way it can be mis understood, I have heard most of them.

But without thinking every variation thru the machine could be subject to current under some circumstances with ground hooked to N of a 4 wire. Something as simple as having another grounded tool sitting on top of the welder could create an alternate pathway for neutral current.

I have the same issue going on with local handyman. I have actually followed a few things in my neighborhood and even went back and fixed a couple things I could from old installations I did when I was a kid and more,, ha.

I looked at one during a furnace call and see someone beat me to it. Today I see handyman with beautiful work but its obvious no one has sit them down and actually went completely thru this system. A mix of new and old doesn't help. I agree with Speedy, its almost impossible to get them past the idea that the ground rod is a different issue.

Certainly at that point in the learning curve. Its a case where its almost easier to teach someone that knows nothing. I tracked 3 or 4 of these in my neighborhood doing it and a couple that did it for a career died.

I didn't believe in a ground wire and deliberately disconnected or cut of wires to equipment. I see a couple current ones figured out you sposed to run 4 wire but they land it the same as the service and leave the bond out leaving a floating can. I gt one now you cant splain to as he is just smart enough to know more than most people about this kind of thing especially since it "all works" and he probably does understand electrical theory better than I do but he is missing a link.

Back in the day welders may have used a range plug,,, I am not for sure but this is not current. The only ones I believe come plug and cord are When they came with grounded electric it changed. The one I refer to above has a pole mounted service which was installed by sparky and the owner then ran 3 wire and heard that the second panel at the house shouldnt be bonded to the ground so the only means and the equipment connected are to a rod.

Its interesting to think this thru a bit and remember a 3 wire dryer had an insulated wire and wires terminated at the machine on the same bar, the rest of the currents in the machine being on insulated wire. Something that does help once the learning curve starts here is referring to the wires as ungrounded conductors, grounded conductors, grounding conductors and at which point the grounded conductor is a neutral.

In V circuits is is a grounded conductor and as part of the service is if it is the only load on it. Its only neutral as part of a multi wire when both legs are used. The basic concept is to insulate all the operating currents back to the service main and bond together all the equipment cases and a little thru a rod the earth, the rebar in the floor or footing, the water piping, any metal someone may contact is at the same potential without current flowing, bonded at neutral service main to deliver a fault current for a dead short to trip a breaker.

GFCI really is a beautiful thing, works in the event of a faulty electric system or ungrounded equipment. The bond screw simply marries the can at service and any metal piping connected to it. If one used a separate G bar or lug in a main panel this would be its bond to N connection. So, a second panel or old service connected to another panel needs a bond at second panel. The other two are made in different sizes so there can only be one way to insert the plug.

With v outlets, there are either three or four holes per outlet. When wiring for v power in your home, you have to link the current in amps with the voltage of the particular wire to create the wattage necessary to power dryers, power tools, and so forth.

You must install different breakers to provide the amps. From there, gauge electrical wire runs from the breaker to the specific v outlet. At first, discussing the difference between v and v power can seem complicated, but remember that they are really two sides of the same coin. With the current level fixed in a home, the volts must be increased in order to provide that power, which is where v wiring provides the needed boost.

Also, v power is more efficient in terms of current because it requires less to provide the same power due to the increased voltage. As mentioned previously, however, this increase also means v poses a higher safety risk than v. For questions regarding v and v power, call Speedy Electric today!

How to Prevent Electrical Fires. Previous Benefits of Installing an Air Purifier. The outer two wires can be interchanged, but never put the center wire of a flat, three- wire cord on anything but the center terminal.

Your three-prong cord will not have a green ground wire. Connect the ground wire of the 3 - wire cable to the ground wire of the 4 - wire cable. Connect the black wire of the 3 - wire circuit to either the red or the black wire of the 4 - wire circuit.

The red and black wires are the"hot" wires. Either wire can be used to power a circuit. Having a ground wire that connects to neutral back at the breaker box provides an alternative path for the electricity to flow.

The neutral wire provides the primary return path for current from the live wire, the neutral wire its self is a ground wire designated to carry current. Asked by: Rangel Strzalek home and garden home entertaining How do you wire a 3 wire?

Last Updated: 21st August, Julito Fein Explainer. Why does my neutral wire have voltage? Because the resistance of the copper neutral wire is usually very near zero, this also keeps the voltage low. However, if the neutral wire is damaged or has a high impedance fault like a corroded connection, the voltage in the neutral can increase to a dangerous level at some point out in the branch circuit. Marylynn Lembke Pundit. How do you wire a 4 wire to a 2 wire? The ground may be there, but it may not be connected.

Push both ends into an electrical junction box. Look at the four wires of the cable. Alternatively, use the red wire as the hot wire. Which is the hot wire on a 3 prong plug? The color code is standard in electrical wiring. The black wire is the hot wire. What are you trying to do? Are you trying to kill some one? Hi, What is your project, your application, that you need to do this?

What do you want to connect to the arduino? Please tell us, there may be another way to do it. What is your electronics, programming, arduino, hardware experience?

What is your country, black and red for neut and active? So I agree, your questions shows lack of knowledge about mains so please keep your circuit fully isolated from mains. If arduuno GND is connected to PE in one room , the voltage on Neutral in another room is not going to be much different.

Also, never use 1 k pullups. Pullups should be 10 k. Noise on this wire will not affect the Arduino until other signals derived from AC get connected to the Arduino. What's missing is your application