why in two wires are a 120 volts but if neutral is loss it doubles to 220?i?

Question

if two wires makes 120 at 60 each but you lose one by been loss ,the neutral why it doubles to 220 instead of only 60?

Answer 1

The "60 each" part of your question says you don't understand the most basic aspects of electricity. Voltage is a measurement between two points. Think of a 12V car battery. It is 12 volts between the 2 terminals of the battery. Another analogy: two things that are 3 feet apart are 3 feet apart, not 1.5 feet each.

Doubling 120 is 240, not 220, but I 220 is a commonly used number, like 110 for 120, but the standard voltages are 120 and 240.

I think the point about doubling when you lose a neutral is talking about what is called a multiwire circuit. The service into your house is the same, and some appliances like your dryer, have the same thing. For a single phase case, a multiwire circuit has 2 phase (or hot) conductors and a neutral, with 120 volts between each phase and the neutral and 240 volts between the two phases. This is created by a secondary winding on the utility transformer that is 240V, with a tap in the center which is grounded. The tap is half way so it is 120V to each hot conductor. If the neutral connection is lost, you still have 240V between the hot conductors, and all the 120V things in your house will be put in series. For example, a couple light fixtures on 2 separate circuit breakers might be on the two opposite phases. When the neutral is lost to the utility, there is still a connection of the neutral's of the lights, so you'll have the two lights in series and connected to 240V. Each light will not have 240V though. If the load on each phase were the same, removing the neutral will still leave 120V on each side. That isn't likely, so one phase will get more than 120V (and generally cause damage) and the other phase will be less than 120V, and they will add to 240V. It would be impossible for it to be so unbalanced that one phase would be 240V and the other would be 0.

Answer 2

i think what you are asking about is in a 110/220 type of recepticle..like for a dryer.....you basically are running two circuits at 110 volts...but they are out of phase...
you have one which is +110, one which is neutral, and one which is -110. there is 110v between neutral and either side but if you take the neutral out and go fbetween the other two sides you would have 220 volts between them. i'm not sure how welli explained that. i hope that explained it and it helps.

Answer 3

The first one is simple addition of two 120 volt lines = 240 volts, but when you have a neutral, each line white and/or black has it's own ground, dividing the voltage and making them separate.

Answer 4

This really does not make sense. Can you not read your question carefully after you have typed it, and then edit it as necessary so that the rest of us can work out what you're trying to ask?