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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?
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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110 volt heater on 220 volts The load is a resistive load and as such it is governed by Ohm's law. Current is directly proportional to the voltage and inversely proportional …to the resistance. As the voltage goes up so does the current. An example, I = W/E, 1000 watt heater at 110 volts = 9 amps. R = E/I = 110/9 = 12 ohms of resistance in the 1000 watt heater. Now take the 1000 watt heater and using the same formula and at 220 volts. I = E/R, Amps = Volts / Resistance. 220/12 = 18 amps. As you can see ohm's law holds true, the current is directly proportional to the voltage. To answer the question, NO, a 110 volt heater will not run on a 220 volt circuit. It will draw double the current it is designed for and the thermal safety trip will shut the unit off. Bypassing the thermal trip will elevate the temperature of the heater to a combustible state and this can cause a fire if the surrounding material is of a combustible material. Connecting to a 15 amp breaker will trip the breaker.
Answer for USA, Canada and countries running a 60 Hz supply service.THHN 6 gauge is rated at 75 amps at 240. I ran it through a 2 1/2' conduit and it works great. You will nee…d a real wire puller to get it through though, this fishline or string stuff just won't pull 4 stands of 6 gauge around any corners at all. I would recommend 6ga for runs under 75ft, 4ga for under 150, and 2 for under 225. Ok #6 is good for 65 Amp @ 75degC. I know the table for thhn wire shows #6 is good for 75 Amp @ 90degC. But you can not use that column. You have to use the 75degC column. The reason for using the 75degC column is the terminations (wire lugs) (circuit breakers) (wire nuts) (etc.) are only rated 75degC. not 90degC. You have to use the weakest link as the max. If one of the terminals in the circuit were rated 60degC then #6 thhn wire would be good for 55amp @ 60degC. You must not run hotter than the rating! (by - tbcguy) I am a Licensed Electrician, and have been in the trade for 22 yrs. As mentioned above you Cannot use the 90degC column for the above mentioned reasons. ** Also note the 65amp rating is the maximum @ the 75degC column, but the STANDARD size "Breaker" is 60 amps, so you would drop down the rating of the 6 awg wire to 60a maximum load. < 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 any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
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.
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.
You will need a relay with a low-voltage coil and 220v contacts rated for the current load of the baseboard heater. If you have a low-voltage transformer, see what its o…utput is rated at (typically 24 volts or less). Then go to an electronics parts store or call some place like Digikey (phone 800-344-4539) and tell them you need (for example) a double-pole single-throw normally-open relay with a 24 volt coil and contacts rated at 30 amps at 240 volts (change these numbers to match your situation). If you do not already have a low-voltage transformer the parts store call sell you one to match the relay coil voltage (be sure to specify if you are connecting the transformer input to 120 volts or 240 volts). Then wire it up as follows: connect the transformer output (24 volts in the example above) in series with the thermostat contacts and the relay coil. Connect the 240 volt supply to the moving arms on the relay, and connect the contacts the arms touch when the relay operates to your heater. Now when the temperature drops below its setting the thermostat contacts will close and connect the relay coil to the 24 volts, the relay will operate, and the 240 volts will be connected to the heater. When the temperature rises above the thermostat's setting, its contacts open, the relay contacts open, and the heater is disconnected. Depending on where you live there may also need to be circuit breakers, protective ground wires, etc.--ask an electrician.
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…ly accurate but one way to look at it). Think about two 110v batteries in series the neutral would come off the connection between the two batteries. so current flow would go from +110 to -110 (first battery) to +110 to -110 (second battery) resulting in 220 output. The connection between the batteries (the neutral) is +110 / -110 resulting in 0. If you want a 110 current instead of using the full flow you could instead use only 'one side' and the neutral and get the 110. When we made the move from DC to AC the basics of this format was kept. So for 110v you need hot and neutral (and a ground) for 220v you need two hots (no neutral) and a ground. HUGE CATCH - WARNING - WARNING!!! Just because you think your equipment is 220v doesn't mean everything it does it does requires 220v for example: some equipment uses 220v for the motor and 110v for the rest of its electrical needs (Dryers are a typical example). In the old days, the dryer would use the two hots (and ground for safety) for 220v and then use one hot and ground (no 'safety' ground) for 110v. However, people often got shocked because this unsafe method would often cause the entire metal chassis to take on a charge. So todays dryers (and any other machine that has both 220v and 110v components) have and are required to have 2 hots ground and neutral. However, the documentation isn't always specific about the '110v need' and a lot of 220v only equipment will still have 4 wire connections even though the neutral is not needed. If you are sure your equipment never utilizes 110v - then you don't need a neutral (a single motor, no thrills (control panel, laser guides, etc), 220v table saw would be fine with out a neutral (one with the thrills may be fine also - depends on the power requirement of the 'thrills'). I don't know about your generator is depends if it is strictly 220v.
When you talk about a 220 volt wire and 110 volt wire, the reference is to the insulation factor of the wire. The amount of amperage that the wire has a capacity to carry is i…ndependent to the amount of voltage that can be imposed on the wire. When you see wire with ratings of 300 volts, 600 volts and 1000 volts, these are the highest allowable voltages that can be impressed without going over the manufacturers recommendation of allowable voltages. A wire that is rated for 300 volts indicates that the wire is rated for 120 volts or 240 volts or 277 volts. At test research facilities, equipment is tested to destruction. The maximum voltage rating, that is given to the wire as a result of these tests, is the highest safest voltages that can be applied to that particular type of insulation material. So if you hear an electrician say a wire is good for 110 or 220 volts, what is meant is that the same wire can be used for either 110 or 220 volts. To answer the question, you don't need to change a 220 volt wire to a 110 volt wire because it is good for both voltages.
3 wire is 2 hots which are 120 volts each and a ground. 4 wire is 2 hots which are 120 volts each and a ground and a neutral.
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 …when we increase the voltage,current gets reduces. Power losses=I^2*R. So,with decrease in current,power losses decreases. In india,voltage is more than in USA therefore there are less losses comparatively and it is more economical to have 220 V. But with increase in voltage,safety decreases ii.e chances of getting shock is more.So,there is a disadvantage of having 220 V. So,accordingly USA set up voltage as 220 V and India set up voltage as 110V. Answer Your question isn't really correct because residences in North America are supplied with 240 V. The system used is called a 'split phase' system, in which the 240-V secondary winding of a distribution transformer is centre tapped, providing a neutral, while its outer ends each provide 120 V with respect to the neutral. Accordingly, houses in North America have both 240 V and 120 V -with the 240 V supplying heavy loads, such as stoves and driers, and the 120 V supplying lighting and socket outlets. The drawback of this system, in practise, is that the 120-V circuits are limited to around 1800 W as, typically, they are fused 15 A. Indian 240-V circuits don't, therefore, have lower losses than North American circuits as larger load currents can flow in the 240-V system than in the 120-V system.
Voltage is not an absolute figure. Voltage Difference is the exact term. So, the voltage difference between the two wires in the 220 V circuit will be 220V.
Is it a single pole switch, or a (220)240v switch? A 240v switch is a double pole switch. It has 4 screws and disconnects both hot sources simultaneously. If it's a single pol…e 120v/277v switch, that just means you can use it on 120v or 277v circuits. If it's not a double pole switch with 4 screws, it's not the right one. Get a 240v double pole switch for this. You can usually find these at home improvement stores. When you state that the motor is a "three wire" make sure that the phasing is correct and you are not trying to connect up a three phase motor. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized IF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
The 4-wire cable should have black, red, white and a green or bare wire. The 220 volts is between red and black. The white is neutral or common and there would be 110 volts be…tween white and red and between white and black. The green or bare wire is the ground.
To wire a 110v outlet to 220v the 220v source must have a neutral conductor that is 110v away from the hot leg. If you don't have the neutral, you must provide a new cir…cuit. Do not just connect ground to the neutral terminal, as ground is not intended to carry current.
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…ny work yourself on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY REFER THIS WORK TO QUALIFIED PROFESSIONALS.
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…y of 30A. so if you are not drawing more than 27A you should be ok.