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It is done every day. The installation of a 200 amp house distribution panel is exactly that. Most home installations in North America are single phase, but there are a few three phase 120/208 starting to show up. The following is an explanation of the distribution system. To best explain this, visualize the three primary line that you see on pole tops in industrial areas. The voltage between these three lines is about 12,500 volts. When you see a pod of three Transformers mounted together they are combined into a three phase system. From each of the three high voltage lines, the voltage goes through three separate fuses and down to a high voltage bushing in each of the transformers. Inside the transformer the voltage goes through a coil and exits the transformer through a second high voltage bushing. This bushing is tied into the ground pad completing the circuit. This connection puts 7200 volts across the transformers primary coil. The secondary voltages of these transformers are determined by the customer that wants the three phase service. It could be 600, 480 or 240 volts. Each single transformer has two output bushings. These bushings can be wired into either a delta or star configuration depending on what the customer ordered. In a single phase service the name is derived from just using one of the three primary lines that are used above. It is the same primary connection, but the secondary is a bit different. The output secondary coil has three bushings coming out of the transformer. On the two outside bushings is the working voltage (for house connections 240 volts). The middle bushing is a center tap of the secondary coil. This gives a voltage of (bushing left to center 120 volts) and (bushing center to bushing right 120 volts) These are the three wires that come into a house for its 120/240 volt service. It is probably not a good idea to try to use a 220 amp circuit breaker on a single phase, if it is designed to operate as a two-phase main circuit breaker. Houses have two 120 VAC wires that are 180° out of phase with each other, giving you 240 VAC service. A two phase main breaker is designed to cut out both phases if either has an overload. It is probably intended to operate with a balanced current load (the same current in each phase). If you hook up only one half of the breaker, it may not work properly. Get a licensed electrician to work on your main power panel. <><><> 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.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoyes. it depends on the size of the total connected load and applicable electrical codes.
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Can a 220 VAC breaker be single pole or does it have to always be a double pole breaker?
U.S. 240 VAC breakers are always double pole since they are protecting two legs of the circuit.
Found 2 wires on a single circuit breaker why?
If it was two wires under one screw on a single-pole breaker, that would not be proper, and most probably against electrical code.If it was two wires, each under their own screw on a double-pole breaker, then that would be a 220 volt circuit; each wire going to its own "leg" of the breaker panel.
Can you split a 220 circuit into two 110 circuits?
A 220 single phase has two hot wires and a ground wire (green). You need one of the hot wires, a netural wire and a ground wire to make a 110 circuit. Now the 220 has a hot and a ground but no netural so you have to make a netural out of a separate wire. There are a lot more things to know and do, IE. safety first always disconnect the power and lock it out. 220 usually has a double pole breaker, do you have fuses or breakers. 110 needs a single pole breaker. Electricity is dangerous if you do not know, do not try, it will kill you, get an electrican or someone who knows to show you ONLY. TOUGH LOVE LARRY....
Can a double pole 20 amp breaker be used with 12-2 wire for a single 220 circuit?
The term "double pole" usually means a breaker with 2 handles that attaches in the space as a normal single pole breaker. If this is what you mean, no, you cannot. There is no potential, or voltage, between the wire terminals. If by "double pole" you mean what is usually called a 2-pole breaker, which is a breaker with 2 handles that attaches in the space of 2 single pole breakers, then yes, you can use this breaker and 12/2 wire to produce a 220v circuit.
Can a 3 phase 220 volt machine that usually plugs into a line with a twenty amp breaker can a thirty amp breaker be used instead?
No, you should not install a 30 amp circuit breaker to a machine which normally requires a 20 amp supply. The circuit breaker is protecting the wire to the machine. That wire is likely only rated for 20 amps, (# 12 awg). Therefore, a 30 amp breaker could allow too much current to go through the wiring to the machine and cause the wire to burn down. Replace the 3 phase 20 amp breaker with the same amperage breaker.
Can a 220 VAC breaker be single pole or does it have to always be a double pole breaker?
U.S. 240 VAC breakers are always double pole since they are protecting two legs of the circuit.
What happens if the source of 220 Volts originates from two legs of a 3-phase circuit?
Nothing happens. This is a normal way to obtain a single phase system from a three phase system.
Found 2 wires on a single circuit breaker why?
If it was two wires under one screw on a single-pole breaker, that would not be proper, and most probably against electrical code.If it was two wires, each under their own screw on a double-pole breaker, then that would be a 220 volt circuit; each wire going to its own "leg" of the breaker panel.
Can you use a single pole circuit breaker rated for 120 volts with 60 hertz made for North American power in Europe on a 220 volt 50 hertz single phase circuit?
These are two completelydifferent systems and are incompatible with each other. Right from the manufacturer's specifications of the breakers down to the physical size of the electrical panels the breakers fit into.
Can you split a 220 circuit into two 110 circuits?
A 220 single phase has two hot wires and a ground wire (green). You need one of the hot wires, a netural wire and a ground wire to make a 110 circuit. Now the 220 has a hot and a ground but no netural so you have to make a netural out of a separate wire. There are a lot more things to know and do, IE. safety first always disconnect the power and lock it out. 220 usually has a double pole breaker, do you have fuses or breakers. 110 needs a single pole breaker. Electricity is dangerous if you do not know, do not try, it will kill you, get an electrican or someone who knows to show you ONLY. TOUGH LOVE LARRY....
Why are two 30amps breaker together?
They are in tandem because they power a 220 VAC circuit, rather then a 110 VAC circuit.
How do you get single phase 440 from three phase 440?
You Don't. 440volt 3-phase is actually 480 volts, taking a single phase gives 277Volts single phase. To get single phase 440 you would use one leg of three phase 440/760 three phase power.
Can a double pole 20 amp breaker be used with 12-2 wire for a single 220 circuit?
The term "double pole" usually means a breaker with 2 handles that attaches in the space as a normal single pole breaker. If this is what you mean, no, you cannot. There is no potential, or voltage, between the wire terminals. If by "double pole" you mean what is usually called a 2-pole breaker, which is a breaker with 2 handles that attaches in the space of 2 single pole breakers, then yes, you can use this breaker and 12/2 wire to produce a 220v circuit.
Can a 3 phase 220 volt machine that usually plugs into a line with a twenty amp breaker can a thirty amp breaker be used instead?
No, you should not install a 30 amp circuit breaker to a machine which normally requires a 20 amp supply. The circuit breaker is protecting the wire to the machine. That wire is likely only rated for 20 amps, (# 12 awg). Therefore, a 30 amp breaker could allow too much current to go through the wiring to the machine and cause the wire to burn down. Replace the 3 phase 20 amp breaker with the same amperage breaker.
Can you get 220 VAC single phase by using the ground and one of the hot wires in a 440VAC three phase circuit?
Use a transformer. A 208-240v single phase line has 2 power leads. Consult your local electrician for help! 440v systems are not for toying with when questions like this are asked.
What is a single circuit?
is the measured voltage,generated between a line voltage and the starting point of a three phase transformer, which is the neutral point. Answer: it is an ac circuit in which the supply has a live and neutral wire, usually at one of the standard voltages 110/120v or 220/240 v. A three-phase circuit is a combination of three single-phase circuits with the phases of the voltages 120 degrees apart so that they peak in a regular sequence.
You have 110amps on each side of breaker but nothing 220 is working what do you have wired wrong?
The circuit feeding the 240volt items needs to be derived from two different "phases" or "hotlegs". If they come from the same "phase" you will not get 240volts, you will get zero volts. Further, if you are taking about a circuit breaker panel, at the point where you are taking the two phases, they are suppossed to be next to each other using a common trip 2 pole breaker.
