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All electrical equipment needs to have a ground wire on it. This is the conductor that helps protect you in case of short circuits. It provides the electricity with a path to ground during the short circuit. Without this return path there is the possibility that the equipment could come up to the working voltage potential. If that happened and you touched the equipment you would become the path to ground conductor with killing results.
Now, to answer your question - The appliance will operate without the third wire, just not safely. A 220v appliance only needs two legs of 110v each to run. These legs need to be from different phases of electricity. We normally use alternating current at 60hz; so each phase changes polarity from positive to negative 60 times a second. As long as your 220v wires are connected to different buses in your service panel, one leg will always be positive and one negative (changing 60/sec). But don't do this. Add the third wire for safety. It is required by code.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoA lot of motors do not supply a ground lead instead the ground wire is connected to the motors junction box housing by means of a grounding screw.
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When does a motor not need a neutral wire?
If the motor is operated from a three phase three wire distribution system the motor will not need a neutral wire.
What will cause electric motor to shock you when you touch it?
The motor winding has gone to ground internally. The ability of the motor to shock you is caused by the ground wire missing or not connected. It is this ground wire that trips the breaker in short circuit conditions and disconnects the motor from the distribution system.
How would you make a patch cord to go from a 220V 30-amp 4-wire generator to run a 220V 20-amp 3-wire portable compressor?
Identify the neutral wire on the generator. This will be the unused conductor to run the compressor. The ground and line1, line 2 are all that are needed.
Do you connect a fuse to the live wire or the neutral wire?
You connect the fuse to the live wire as it is the one with the potential difference of 220V and in case of short circuit current will blow out here
Does ground wire need to be a solid wire?
No
Is the neutral wire on a 220v outlet the same as the ground?
No it is not
How do you wire a 220v three prong to a 220v four prong?
You'll need to contact an electrician who will pull a new wire for you. If you only have 2 wires on the 240 line, you don't have a neutral or a ground; both of which are essential for a modern electric range.
How do you know if your blower motor is bad or if you need to just change the resistor?
Use a jumper wire from the battery + (pos) terminal to the positive on the blower motor, and run a - (Ground) wire from ground on the motor, to chassis or frame.
What size wire do you need for 2HP motor with 120 volts?
12/2 with ground.
Electric range 220 or 110?
Electrical range is usually 220V and requires at least a 40A breaker. In a three wire configuration, the white power carries 110V, the black wire carries 220V and the green wire is the ground. A four wire configuration has an additional wire that is neutral.
What causes a meter to read negative voltage across a DC motor?
The main cause for a meter to read negative voltage across a DC motor is a loose ground wire. The ground wire can be loose or may need to be cleaned.
How do you wire 240V straight blade outlet when both screws are brass?
Both screws are brass because in the US you need two hots to get 220V. In a 220V only circuit you do not connect the neutral, only two hots and a ground. This is why 220V breakers are twice as wide as 110V and have two terminals instead of one.
When does a motor not need a neutral wire?
If the motor is operated from a three phase three wire distribution system the motor will not need a neutral wire.
What will cause electric motor to shock you when you touch it?
The motor winding has gone to ground internally. The ability of the motor to shock you is caused by the ground wire missing or not connected. It is this ground wire that trips the breaker in short circuit conditions and disconnects the motor from the distribution system.
How would you make a patch cord to go from a 220V 30-amp 4-wire generator to run a 220V 20-amp 3-wire portable compressor?
Identify the neutral wire on the generator. This will be the unused conductor to run the compressor. The ground and line1, line 2 are all that are needed.
How do you wire 220V with 2 black 1 white wire?
Your black wires are your hot wires. The white is your neutral or common. It would be best to run an equipment ground (green wire) too.
Do you connect a fuse to the live wire or the neutral wire?
You connect the fuse to the live wire as it is the one with the potential difference of 220V and in case of short circuit current will blow out here
