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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
What is the result of running a 480 volt 3 phase 60hz motor with 415 volt 3 phase motor?
Running a 480 volt motor at 415 volts can lead to decreased performance and efficiency due to the lower voltage supply. It may result in lower torque, higher current draw, and potentially overheating of the motor if not designed to handle such voltage differences. It's recommended to use a motor designed for the specific voltage it will be operating on to ensure optimal performance and longevity.
Why our three phase LED meters reverse led glows when nothing is switched on?
This may occur due to induction from nearby electrical wiring or electromagnetic interference, causing a small current to flow through the LED meter even when nothing is switched on. This can result in the reverse LED glowing as a result of this induced current. It is important to ensure proper grounding and shielding of the LED meter to minimize these effects.
Can you run 240 volt 2600watts stove burner that only require 120 volts 1100 watts?
No, you cannot run a stove burner that requires 240 volts and 2600 watts using a power source of 120 volts and 1100 watts. The voltage and wattage requirements of the stove burner must match the power source for it to function properly and safely. Attempting to use an incompatible power source can damage the burner and pose a safety risk.
How do you use a one phase motor in place of a three phase motor?
To use a single/one phase motor instead of a three phase motor is possible if you have a three phase power supply as you will only need to tap one of the three phases together with neutral and an earthwire, however to use a three phase motor instead of a single phase will require the provision of three phase power supply.
How can a three phase induction motor reverse direction of travel without changing input phase?
A three-phase induction motor can reverse direction of travel by swapping any two of the three input phases. This changes the rotating magnetic field direction, causing the motor to rotate in the opposite direction. No change to the input phase sequence is required.
Normally red or black is the hot wire and green is the ground. However someone may have used the green wire as the neutral wire which is normally white. Just connect the black wire from the light to the red wire and the white wire from the light to the green wire and see if it works. If not you have to pull the wires out of the ceiling box and see how they wired it.
Can you use 240 volts with a 120 volt supply?
No, it is not possible to use 240 volts with a 120 volt supply directly. You would need a transformer to step up the voltage from 120 volts to 240 volts. Attempting to use 240 volts with a 120 volt supply without a transformer can damage equipment and pose a safety hazard.
What are the phase voltages if the line voltages are 100volts?
It depends on the type of three-phase system. If it's a three-wire system, then the phase voltage is numerically equal to the line voltage. If it's a four-wire system, then the phase voltage is numerically equal to the line voltage divided by 1.732 -in your example, this works out to be 5.77 V.
What is the relationship between phase and line voltage in a 3 phase generator?
The Voltage produced by the generator will be like 3 sets of your home's voltage (assuming we're looking at an outlet and not the 220V at the brkr box).
Each phase (sinusoidal wave) will be separated by 120 degrees, so when the 1st phase starts the 2nd phase will start 1/20th of a second later. The 3rd phase then starts 1/40th of a second later, and the 1st phase starts again 1/60th of a second later which is the beginning of the second set of sin waves. This of course is based on the N. American Frequency of 60 hertz which is 60 cycles (waves) per second.
AnswerFor a three-phase, three-wire, system the line voltages will be identical to the phase voltages.
For a three-phase, four-wire, system the line voltages will be 1.732 times the value of the phase voltages.
Would US appliance's like a clothes washer that run on 120 volts work on European 230 volts?
Definitely not !! it would be dangerous to use 120 volt equipment on a 230 volt supply, it would either blow the fuse or blow up . .
You need a transformer to convert 230 volts to 120 volts, and you need one of the right rating. For a washing machine that might be quite a big transformer. We have 110 volt transformers for power tools but they are not big enough.
How do you rewire a 240 volt 30amp plug to run 120 volt 30 amp?
in most electrical systems 240V service is made up from two "hot legs" (phase to phase) by removing one of the hot wires you will get 120V phase to ground... ( pretty simple)... Get an electrician to do it.
Another Answer
Actually, those 240-V services which exist outside North America are obtained between line (not 'phase' -no such thing) and neutral.
A chemical switch is a molecule that can change its structure or properties in response to a specific stimulus, such as light, temperature, or pH. This switch-like behavior allows for controlled manipulation of chemical processes and can be used in various applications, such as drug delivery or sensing.
What channel can watch the ball drop with an entena?
You can watch the ball drop on New Year's Eve on the ABC channel with an antenna.
What happened when one phase missing of a 3 phase load?
When one phase is missing in a 3-phase load, the load will experience an imbalance which can lead to overheating and potential damage to the equipment. The motor may run slower or produce less power, and the efficiency of the system will decrease. It is important to address the missing phase quickly to prevent further damage.
Can a starter used for 5 hp 3 phase motor be used for 7.5 hp 3 phase motor?
No, you cannot use a starter rated for a 5 hp motor with a 7.5 hp motor. The starter needs to be matched to the motor's horsepower rating to ensure proper protection and operation. Using an undersized starter can lead to overheating and premature failure of the motor. It is recommended to use a starter specifically designed for a 7.5 hp motor.
What color phasing tape should be used for a three-phase 575V system?
The industry standard for low voltage (120-208V) conductors is: A phase: black B phase: red C phase: blue As you look at a three phase panel, the phases go left to right (the same way we read). Therefore, the supply conductors should be black, red, blue, left to right. (A phase is not typically marked as the wire insulation is already black in color.) The branch circuit conductors should always be the same color of their phase supply conductor. This is a critical industry standard although it is not required by the National Electrical Code. <><><>
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.
Can a single pole switch be used to control one light between two single pole switches?
Yes, this can be achieved using a setup known as a three-way switch configuration. By connecting the single pole switch in the middle of the wiring between the two three-way switches, you can control the light from any of the switches.
Does electricity bills come with rent?
Electricity bills may or may not be included in rent, depending on the rental agreement. Some landlords include utilities such as electricity in the rent, while others require tenants to set up and pay for their own electricity. It's important to clarify this with your landlord before signing a lease.
Can you use single phase kwh meter for three phase load?
No, a single phase kWh meter is designed to measure the energy consumption of single phase loads only. To measure the energy consumption of a three phase load, you would need a three phase kWh meter specifically designed for that purpose. Using a single phase meter for a three phase load would not provide accurate energy consumption readings.
Yes, you can change a single pole switch to a double pole switch for your winch. A double pole switch will have two input wires (live and neutral) and two output wires to control the winch operation. Make sure to follow proper wiring and safety guidelines when making the switch to ensure the correct function.
If you are connecting a 4-prong dryer cord to a 3-prong outlet, the extra ground wire (green or bare copper wire) should be left unconnected. Do not try to ground it by connecting it to the neutral terminal or anywhere else. This is to prevent creating a ground loop and potentially causing a safety hazard.
Can you use two single phase surge protectors instead of one three phase surge protector?
No, using two single phase surge protectors in place of one three phase surge protector is not recommended. A three phase surge protector is specifically designed to protect all three phases of a power system simultaneously and provide comprehensive protection. Using individual single phase surge protectors may leave some phases vulnerable to surges and compromise overall protection.
What size of wire needed for 220volt?
Wire is not sized by voltage. It is sized by current measured in amps.
Some common copper wire sizes and their current capacities are:
15 amps -- 14 gauge wire
20 amps -- 12 gauge wire
30 amps -- 10 gauge wire
40 amps -- 8 gauge wire
Would current of 126 volts be detrimental to your appliances that are rated for 120 volts?
A current of 126 volts is within the normal fluctuation range of electricity supply and should not harm appliances rated for 120 volts. The appliances are designed to handle a small variation in voltage. However, if the voltage consistently exceeds the rated voltage by a significant amount, it could potentially damage the appliances over time.
Can you reuse electrical wire?
It is generally not recommended to reuse electrical wire because it can weaken over time from heat, bending, and exposure to environmental elements. It can be difficult to determine the integrity of the wire once it has been installed and used, so it is safer to use new wire for electrical projects.
