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If you plug a single phase appliance into a three phase power supply, then you will be using single phase power. It does not matter if you are delta connected, AB, BC, or CA, or if you are wye connected, AN, BN, or CN. Yes, if there was "a problem", you would trip the supply. Question, however, is what do you define as "a problem"? Three phase power is intended to supply three phase appliances. Connecting a single phase appliance to three phase power is inconsistent with the objective, and such connection must have been performed by some kind of "jury-rigging". If you pull more than the trip current on any one phase, the supply should trip. If a malfunction in the single phase application, however, were to result in fault current that is lower than the trip current, you might not trip, and you might create damage and/or a fire. There is nothing wrong with building a branch circuit that feed a single phase load from one phase of a three phase source. You just need to provide the correct protection for that intended load.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThis is generally fine, as long as you connect the hot wire to one of the three phases and the neutral wire to the neutral. Note that there is one caveat for this for some older three phase wiring in the US. The voltage between the the hot wire and the neutral will be 115 volts for only *two* of the three phases, on the third phase the voltage will be 170 volts (if memory serves me correctly). Make sure you connect your equipment to one of the 115 volt legs and not the 170 volt one or you will damage your equipment (as in you will see smoke coming out of it type of damage). Whatever you do make sure you do not connect your equipment across two of the hot legs (phases) or you will see even more smoke than connecting it to the wrong phase.
Wiki User
∙ 10y agoYes and no. You can only connect the single phase appliance to one of the lines of the three phase power. If the voltage and current match, then the appliance will work correctly. If not, then damage could occur.
Another Answer
Not if you connect the load correctly, and the voltage applied to the load matches its voltage rating.
For a three-phase, three-wire, system, you can connect a single-phase load across any two line conductors. For a three-phase, four-wire, system, you can connect a single-phase load across any two line conductors, or between any one line conductor and the neutral conductor. In each case, of course, the voltage obtained must match the voltage requirements of the single-phase load.
Wiki User
∙ 12y agoThe power supply to a given piece of equipment is governed by what the manufacturer requests, to make the equipment operational. By applying the wrong phasing or voltage will usually not allow the equipment to operate the way the manufacturer intended it to. Single phase systems has its uses in supplying services to homes whereas three phase systems are used in commercial and industrial services.
Wiki User
∙ 14y agoNot for the appliance but maybe for the grid.
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How you convert the value of single phase power to value of 3 phase power?
Electric power is measured in watts. It does not matter if it is single phase or three phase. All things being equal, for the same load, the power measured in a single phase circuit or a three phase circuit, will be the same.
Do televisions use single-phase or 3-phase power?
Answer 1: TV's use single-phase power. Answer 2: TV's use single phase power of 220 or 110 volts ac power depending on what part of the world you live in.
Can you convert a single phase power supply into a three phase stabiliser to power a home?
Houses generally run on single phase power. It would not make sense to convert single phase to three phase to run a house. Please restate the question.
What is single phase ac generator?
It's an electrical generator converting mechanical power into electrical power. The electrical power comes out in the form of single-phase alternating current.
Can a 3 phase motor be converted into a single phase motor?
A three-phase motor will not start if one or two phases aren't connected. If while running one or two phases "drop out", it will continue to run for awhile, but will eventually burn out, unless connected to a motor saver.
Does single phase power damage air conditioners?
If the air conditioner is designed for three phase, then it will not run, and could be damaged, by single phase power. Otherwise, no.
How you convert the value of single phase power to value of 3 phase power?
Electric power is measured in watts. It does not matter if it is single phase or three phase. All things being equal, for the same load, the power measured in a single phase circuit or a three phase circuit, will be the same.
Is Europe ac power single phase?
In Europe they have both single phase and three phase.
Do televisions use single-phase or 3-phase power?
Answer 1: TV's use single-phase power. Answer 2: TV's use single phase power of 220 or 110 volts ac power depending on what part of the world you live in.
Can you convert a single phase power supply into a three phase stabiliser to power a home?
Houses generally run on single phase power. It would not make sense to convert single phase to three phase to run a house. Please restate the question.
What is single phase ac generator?
It's an electrical generator converting mechanical power into electrical power. The electrical power comes out in the form of single-phase alternating current.
How do you connected 3 phase motor to single phase power?
Use VFD to make 3 phase from single phase source.
What happens to your appliances if there is not enough power and the power trips?
If there is not enough power and the power trips, your appliances will lose power abruptly. This sudden loss of power can cause damage to sensitive electronics and appliances, particularly if the power surges when it returns. It is recommended to use surge protectors and Uninterruptible Power Supply (UPS) devices to protect your appliances in such situations.
Can a 3 phase motor be converted into a single phase motor?
A three-phase motor will not start if one or two phases aren't connected. If while running one or two phases "drop out", it will continue to run for awhile, but will eventually burn out, unless connected to a motor saver.
What is meant by three phase?
Three phase power is a method of electric power transmission using three wires. Three phase power systems may have a neutral wire that allows the system to use a higher voltage while still allowing lower voltage single phase appliances. In high voltage distributions, it is not common to have a neutral wire, as the loads can simply be connected between phases.
How do you make Home Insurance Claim for damage to electrical appliances from a power surge?
A lightning strike has very much the same effect on electrical appliances as a power surge. An electrician will not easily tell the damage from these two events apart. Insurance covers for lightning, not for a power surge. So in short, claim for lightning damage, not power surge damage.
How does rotary phase converter work?
A rotary phase converter is a device that changes single phase electrical power into multiple phase electrical power.
