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# If you need 220v 3-phase power how many wires are required coming in from the transformer or power pole and what are the voltages or potential purposes of each wire load 110v load 220v neutral ground?

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In 120/208V 3 phase system you have 5 wires: three hots, one neutral, and one ground. You have 208V between any two hots and 120V between any hot and neutral. The neutral is the same as in a single phase system. Clarification: Only 4 wires maximum come from the pole - 3 phases and a neutral, and then only if the transformers are on the pole. The ground is always locally derived from a ground rod(s) and/or cold water pipe ground. Most of the time, only 3 wires come in from the pole - the 3 phases in a Delta configuration (Delta has no neutral). The neutral is then derived from a local transformer connected in a Delta-Wye setup. The neutral is the center connection in the Wye. So, from the utility feeder to the transformer - 3 wires. From the transformer (wherever it is located) to the building service entrance panel - 4 wires. The ground is connected at the service entrance panel, and from there to the rest of the building you would have all 5 wires. Clear? In the US, 208/120 is a standardized mains voltage, but in some parts of the world, the phase-to-phase voltage is 220. In that case, the phase-to-neutral potential (in a 3-phase system) would be 127 Volts, not 120.
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# How do I connect an electrical light switch that has a line neutral ground and load wire that connects to a 2 wired low voltage light?

Answer   A switch makes or breaks the hot wire, it does not bother the neutral or ground. To wire in a switch just put in between the line and load wires. There are two

# Why is the power supply in the US 110v and in India it is 220v?

The power supply in usa is 110 V and where as in india the voltage is 220 v.As we use transformers and transformer is a constant power device i.e. P=V*I=Constant. Therefore

# What gauge wire do you need for 220V 30A power?

In order to safely run 30 amps of electricity, a minimum of a #10  gauge wire is needed. For longer runs of wire, #8 gauge is better.

# Do you need a neutral wire for 220v generator?

  Quick answer is that 220v does not use or need a neutral. The original concept of the neutral (going back to Edison and DC power) was cutting the power in half (not real

  No it is not

# How do I convert my electric stove's wiring 220v 3 wire 40 amp to permit two 110v 20 amp outlets?

Answer for USA, Canada and countries running a 60 Hz power supply service.   As always, if you are in doubt about what to do, the best advice anyone should give you is

# Can computer run on 220V from 110V power supply?

  No, of course not. The power supply needs to match the 'wall power' to provide the proper voltages to the motherboard.   On the bright side, most power supplies sold

# How can you tell if the three wires coming out of your water heater are for 110v or 220v?

  The very best way is to look for a data plate on the water heater. It will list the operating voltage as well as the wattage.   If there is no data plate, you could r

# Is there anyway to get 220V 60hz from a 110V 50hz power supply?

It would involve some electronics work but it could be done. Might add that it could be more expensive than just buying the proper power supply. Use   Use 220V 60hz motor

# If you have both 220V 3 phase power and 110V single phase power can it be converted to 220-240V single phase power?

  If you have a 220v three phase delta system, the phase-to-phase voltage is 220v single phase; hence, no conversion is necessary. Don't worry about 220-240v rating, the v

# Can you use a neutral from another line to wire 220V to 110V?

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.   Before you do a

# What happens to a 110v appliance connected to a 220v power supply?

Â If   you double the voltage (and the resistance stays constant), you will   quadruple the wattage. Typically it will cause overheating and   meltdown of electric

10 AWG.

# Is it okay for Neutral to earth voltage to be 110V for a 220V system?

Definitely NOT. You get 110 V between one of the two hot 220 V conductors and neutral. Voltage between neutral and ground should be zero.

3 AWG

# Can 110V circuit with 2 wire size of 10 and a ground be converted to 220V after changing the outlet and breaker?

It depends on the amount of current (Amps) your breaker is rated for. If you boost your voltage the current will go down proportionally. 10 guage wire has an allowable ampacit
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# Can you plug a power-bar on a 220V to 110V converter?

The power-bar must be plugged into the correct voltage it was  designed for.