0
How do you wire an older 2 wire 30 amp compressor to a 3 wire 30 amp dryer plug?
Wiki User
∙ 13y ago
I am guessing that the dryer is 220-240 VAC as is the compressor. I also assume that the third wire on the dryer is a ground. You need to make sure that the metal chassis on the compressor is not connected to the two wires. You then need to create a covered junction box where you have the two existing wires and a ground wire that you connect to the compressor metal chassis with a screw type connector. Ground wire should be 10 AWG. Now you have three wires. Connect the two hot wires of supply to two original wires on compressor and ground wire to the chassis ground.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
How to Dryer plug wire colours for 4 wire?
Dryer Circuit Wiring and Hookup Check related link below. Lots of pictures.
Should a 3 wire 250 volt drier be grounded?
Yes, most definitely. Provisions for the ground wire in the dryer receptacle should be used. The feeder cable's ground wire is first grounded to the receptacle's junction box ground screw and then taken to the receptacle's ground terminal. The dryer plug configuration will match up to the dryers four wire plug in cable. When the plug is connected into the dryer receptacle the ground terminals of both devices will match and the ground wire will be continuous from the voltage source at the distribution panel and complete the circuit at the dryer. This low impedance electrical path will conduct any ground fault that could occur at the dryer and trip the feeder breaker of the dryer circuit, there by removing the fault current from the dryer circuit.
Have a black white and red wire for a dryer plug what ones the ground wire?
It would be green or bare. That's if you have a grounding wire in the cable. You may not have one.
Where do you ground the extra wire when plugging a 4 prong wire into a three prong outlet for a dryer at?
It may be a 220 Dryer, and you will need a new outlet installed. There should be no extra wires when connecting the Power cord to the plug
Where do you purchase a bonding strap for a dryer?
New dryers should not need a grounding strap. The fourth green wire in the plug cable should have a lug on it and it connects to the frame of the dryer.
How to Dryer plug wire colours for 4 wire?
Dryer Circuit Wiring and Hookup Check related link below. Lots of pictures.
What is involved in running a 240V dryer line if you have a regular 120V line now?
You will have to install a double pole breaker in the fuse panel and then run new wire (10/3) to the location of the dryer and install the proper plug. You will need a 4 prong plug; the older 3 wire plugs no longer meet code for new work.
Should a 3 wire 250 volt drier be grounded?
Yes, most definitely. Provisions for the ground wire in the dryer receptacle should be used. The feeder cable's ground wire is first grounded to the receptacle's junction box ground screw and then taken to the receptacle's ground terminal. The dryer plug configuration will match up to the dryers four wire plug in cable. When the plug is connected into the dryer receptacle the ground terminals of both devices will match and the ground wire will be continuous from the voltage source at the distribution panel and complete the circuit at the dryer. This low impedance electrical path will conduct any ground fault that could occur at the dryer and trip the feeder breaker of the dryer circuit, there by removing the fault current from the dryer circuit.
Does a refrigerator have a hot wire relay?
Yes. Older refrigerators used a hot wire relay in the starting circuit of the compressor.
Have a black white and red wire for a dryer plug what ones the ground wire?
It would be green or bare. That's if you have a grounding wire in the cable. You may not have one.
Adding a 220 line to panel box for a dryer?
A dryer requires a 30 amp receptacle. This will be to receive a four blade dryer plug. The wire needed will be a three copper wire #10 cable set with a bare #14 copper ground wire. The breaker will be a two pole 30 amp breaker.
Where do you ground the extra wire when plugging a 4 prong wire into a three prong outlet for a dryer at?
It may be a 220 Dryer, and you will need a new outlet installed. There should be no extra wires when connecting the Power cord to the plug
Where do you purchase a bonding strap for a dryer?
New dryers should not need a grounding strap. The fourth green wire in the plug cable should have a lug on it and it connects to the frame of the dryer.
Is it possible to put a 4-prong plug on a dryer that uses a 3-prong plug and how would you do this?
If you are viweing this because you want to change the newer 4-prong plug/outlet to fit an older 3 prong outlet/plug don't do it! The newer plug is safer and the 3 prong plug no longer meets code. See the discussions in other threads. all you need to do is hook the two hot leads on the outer terminals, then the nueatral, white wire on the center terminal and the green ground wire to the ground screw. Be sure to remove the bonding jumper that ties the neutral to the chassis. This is no longer needed as now you have a ground line from the outlet. There should be 3 insulated lugs in the dryer, two hots and a neutral. Connect the red and black wires in your new cord to the hot lugs (red & black are interchangeable), and the white neutral to the neutral lug. Neutral is the center wire on your older 3-wire cord, for reference. Connect the green ground wire directly to the chassis of the sryer using a convienent screw. Use the four prong cord if you can. It is safer because it has the extra ground wire which older cords did not.
Is it safe to use an oven that has a dryer plug put on?
It will work if, the dryer plug you are using is the same electrical voltage as the oven. If your oven is electric, it is 220 - 240v, if gas, 110 - 120v. A 220 plug has either 3 or 4 prongs, depending on your appliance being a 3 or 4 wire system. A 4-wire system will have a red wire (110v power), black wire (110v power), white wire (neutral/common), green wire (ground). A 3-wire system will be missing the white or green wire. 110v system (gas oven or dryer) will have a black (power), white (neutral), green (ground). It will work, but be limited. Dryer circuits are 30A, whereas oven circuits are 50A. You cannot just upgrade the dryer wiring to 50A as it is not rated for that and will start a fire. To use the oven properly you need to install a properly rated circuit. Do it right or don't do it at all. Negligence is fatal with electricity.
Can you plug a 220 dryer in an 220 aircondition plug?
Probably not, the pin configuration of a 30A dryer plug should be different from a 15 or 20A A/C plug. The demand draw of a dryer is higher than that a A/C unit and would trip the 15 or 20A breaker. By putting a bigger breaker on the A/C circuit would not be a good idea either because the wire size to the A/C plug would then be under sized.
What if you have four wires running to your dryer outlet and the outlet is only a three prong one wire is just hanging out is this really even safe?
Have the outlet changed to match the configuration of the dryer plug.
