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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
How do you wire a 277 volt heater from 480 volt box?
The 277 volt heater can be wired to a single pole breaker in a 3 phase 4 wire 480 volt distribution panel. The breaker should be sized to the amperage draw of the heater. 277 volts is the star point (wye) voltage of a 480 3 phase system. 480 / 1.73 = 277 volts. The third answer is not correct, two phase legs of a 480 volt system will give you 480 volts. It is the phase leg to ground (neutral) that gives you the 277 volts.
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A 277 Volt heater or device may not be wired to a 480 Volt circuit or box. A 277 Volt device may only be wired to a circuit rated for 277V/480V equipment.
2 legs of 480 volts will give you 277. But since you don't know the answer you probably shouldn't be doing it! Please don't kill yourself, hire a licensed electrician.
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.
What size wire for 220 volt dryer from breaker to outlet?
For a 220 volt dryer, a 10-gauge wire is typically used for the connection from the breaker to the outlet. It is important to ensure that the wire matches the amperage rating of your breaker to maintain safety and efficiency in the circuit. Consulting local electrical codes and a professional electrician is recommended for accurate specifications.
Cable for 100 hp three phase induction motor?
The formula you are looking for is I = HP x 746/1.73 x E x %eff x pf.
I = 700 x 746 = 522200/1.73 x 4160 x .91 x .92 = 522200/6025 = 87 amps.
A standard motor's efficiency between 5 to 100 HP is .84 to .91.
A standard motor's power factor between 10 to 100 HP is .86 to .92.
Motor feeders have to be rated at 125% of the motors full load amps. 87 x 125% = 109 amps.
A #2 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 115 and 130 amps respectively.
This wire has to have an insulation voltage rating of 5000 volts.
Is there any conversion plugs to go from a 4 prong 240 volt dryer outlet to a 3 pronged dryer wire?
Well, yes, and no. You CAN'T just disconnect the wires from the 60 amp outlet and connect them to three 20 amp outlets. It would be more like tearing out and rebuilding than converting. The 240 volt outlet has a hot wire from each side of the breaker box and each can supply a series of standard outlets if you replace the 60 amp breakers with 20 amps and pull 12 gauge wires.
Actually you CAN just disconnect the wires and connect several 20 amp outlets, IF you change the breaker to a 20 amp one. The breaker/fuse has to be sized for the lowest current link, in this case it is not the wire but the outlets. The wire will be oversized but it does not need to be replaced. Some older dryer circuits also did not include a ground, so you will have to run a grounding wire or install a GFI.
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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 you install an electrical switch before a gfci?
Yes, an electrical switch can be installed before a GFCI outlet in a circuit. Just ensure that the wiring is done correctly, following all safety guidelines and local electrical codes. The GFCI outlet should be properly connected to the power source and the switch should be wired to control the flow of electricity to the outlet.
What is the insulator between the contacts of a bell push when it is off?
The insulator between the contacts of a bell push when it is off is typically made of a non-conductive material such as rubber or plastic. This insulator prevents electrical current from flowing between the contacts when the bell push is not being pressed, thus keeping the circuit open.
A group of ten (10) batteries composed of 6 Volt and 12 Volt types will have six (6) each, 6 Volt and four (4) each 12 Volt batteries. The contributing voltages will be 6x6 and 12x4 for a total of 84 Volts.
Does voltage play a role in an electromagnet?
Voltage is the "pressure" that pushes electrons thru a circuit, higher voltage means more current, or amperes. Amperes and the number of turns of wire in the magnet control the force of the magnet
Will 3 AA batteries ignite hairspray?
Three size AA batteries sitting side-by-side in a shelf cannot ignite a thrust of hairspray blown onto them. They have to be connected in such a way and with such a setup as to get them to either provide the spark or the heat needed to ignite hairspray. One off-the-shelf AA battery has the energy needed, through the proper arrangement, to ignite hairspray.
Can a lightbulb blowing out cause a circuit breaker to trip?
Yes, if the fixture itself has a shorted wire or a socket, the light bulb in some cases will cause the breaker to trip. Remember there are other things connected on that same circuit. Other outlets, lights, switches, etc. etc.. Check out everything that is on that circuit first, as well as the entire light fixture for burned wiring or a burned socket.
An alternative answer
Sometimes, if the alternating voltage - and corresponding peak current - happen to be at or near to peak value at the instant when the filament of an incandescent light bulb blows, the sudden break in the flow of current can induce a "spike" of current which causes the circuit breaker to trip. Good quality light bulbs have a fuse inside them which is intended to blow in this situation but, sometimes, the fuse may not melt in time and the breaker reacts faster than the fuse.
So, if you replace the light bulb and the breaker does not trip again when you switch the light on, the breaker most probably tripped for the reason just explained. It is then unlikely that there is any fault in the lamp fixture or in any of the other outlets, lights, switches, etc. on the same circuit.
If, after you have changed the blown light bulb for a brand new one and have switched it on, the breaker still keeps tripping, then the advice given in the very first answer to this question must certainly be followed: check out the entire light fixture for burned wiring or a burned socket, and also, if necessary, everything else that is on the same circuit.
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.
Why don't we get most of our electricity from batteries?
Batteries store electricity but they do not generate it. Most of our electricity comes from power plants that convert various energy sources (such as coal, natural gas, nuclear, or renewable sources like solar and wind) into electrical energy. Batteries are typically used for storing and supplying smaller amounts of electricity or for backup power in case of outages.
There are typically 6 colors of wires on power supplies What is the voltage of each wire?
The wire colors on power supplies are typically black (ground), red (+5V), yellow (+12V), orange (+3.3V), blue (-12V), and white (-5V). Each wire corresponds to a specific voltage output supplied by the power supply unit to power different components in a computer system.
How do you convert 24 volt trailer lights to 12 volt?
To convert 24 volt trailer lights to 12 volt, you will need to install a voltage regulator or resistor in the circuit to reduce the voltage to 12 volts. Alternatively, you can also replace the 24 volt lights with 12 volt lights designed for trailers.
How do you convert 415 volts to 240 volt?
You would need to use a voltage transformer or converter to step down the voltage from 415 volts to 240 volts. Make sure to select a transformer that is rated for the appropriate power capacity and input/output voltage requirements to safely convert the voltage.
Type of circuit that is used in house wiring?
Both series and parallel circuits are used What_types_of_circuits_are_used_in_homes. If the circuit is a dedicated circuit which means that there is only one device in the circuit, then it is a series circuit. All the rest will be classed as parallel circuits.
How many amps per phase will a 45 Kw 380 volt unit use?
To calculate the amperage per phase, you can use the formula: Current (A) = Power (W) / (Square Root(3) x Voltage (V)). In this case, for a 45 kW unit at 380 volts, the amperage per phase would be approximately 70 amps.
Can a 240V baseboard heater work on a 120V outlet?
for USA, Canada and countries running a 60 Hz supply service.
A purely resistive 240 volt heater [baseboard unit] with no fan will operate when connected to a 120 volt source.Either of the two "hots" in the heater can be connected to the 120 volt grounded circuit conductor [neutral].
The wattage output will be only one quarter of the rated watts, so it won't get mad hot, but it will work.
A 2000 watt 240 volt baseboard heater unit [typically 8 foot] will only allow enough current to generate 500 watts at 120 volts.
If the heater has a fan, then it won't work, because the fan motor won't operate correctly at the lower voltage.
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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.
Why does the Outlet stops working after an appliance is plugged in?
Check for a loose wire connection on the sides of the outlet that you plug into that causes the other two outlets to stop working. Are the screws tight? There will probably be two wires on each side, one will be the feed coming to that oulet and the other one will feed to the other outlets. Also a possible loose connection in the box that the outlet is mounted in, such as a loose or broken wire in a wire nut. Remember to shut off the power to this circuit while working on it. I hope this will help. Polarity on the third outlet could be reversed. It will blow the circuit. Is it possibly current drain i.e are there too many outlets and is the appliance something that uses a lot of current? This can be discovered by reading the manual. If lets say the junction box or fuse box had been replaced by a solid wire then this would allow more current to flow. If this wire(fuse replaced) is supplying the three outlets and a short circuit is in the appliance. The first answer is correct. The other two may be true statements, but they do not address this question.
Why can you touch a neutral bar?
Neutral would refer to some object or circuit which has the same electric potential as the relative object. A "neutral bar," would mean a conductor which has no electric potential. If your body has no electric potential, then the potentials will equal, and no energy will be transferred.
How can you run 277 volt lamp on 220 volt?
Running a 277 volt lamp on 220 volts can potentially damage the lamp and pose safety risks. It is recommended to use the correct voltage to ensure the proper operation and safety of the lamp. If necessary, consult an electrician to reconfigure the electrical circuit to match the correct voltage for the lamp.
This question doesn't really have enough information. I'll assume that you are talking about a DC circuit where switching of the poles would mean to reverse the polarity of the circuit, ie switching of the poles would mean to switch the positive and negative leads of the circuit. This term is also associated with motors. Switching of the poles in motors is what causes the rotation of the armature. The brushes of the motor induce a current into the armature, as the armature rotates the brushes come in contact with other bars on the armature thus "switching of the poles".
What is the abbreviation for Hertz?
- The abbreviation of Hertz is symbol Hz
- It is the unit of frequency in the International System of Units (SI).
- It is defined as the number of cycles per second of a periodic phenomenon.
- Hz can be prefixed; commonly used multiples are kHz (kilohertz, 103 Hz), MHz (megahertz, 106 Hz), GHz (gigahertz, 109 Hz) and THz (terahertz, 1012 Hz).
To attach a 120V light fixture to a 277V system, you will need a step-down transformer with a 277V primary and 120V secondary. This will allow you to safely power the light fixture at the correct voltage. You do not need a ballast in this case, as ballasts are typically used with fluorescent lights and not for altering voltage levels.
How can you convert a 220 into a 110 volt power outlet?
The 220 volt outlet get remove and a 100 outlet gets installed. The wire hook up is the same. The breaker that feeds the outlet need to be change aswell from a double pole to a single pole breaker.
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How does that work? If you convert a supply from 220V to 110V you would draw twice the current for the same watts, risking the wires overheating and causing a fire assuming the circuit-breaker didn't trip first. You'd need to change a lot more than the breaker too. My advice? DON'T!
Can you soft wire an electric water heater and plug it into a household outlet?
If it does not come with a plug on it, no. If it is made for direct wire, then 99.9% chance is that it is a 240 volt unit. If you plug it into a 120 volt outlet your water will barely get warm.
