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Electrical Wiring

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4,935 Questions

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.

Switching of the poles?

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).

How can you attach a 120 v Light Fixture to a 277 v system do I need a ballast so what kinda of ballast?

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.

How do I calculate the watts used by a service panel using the amps of the three phases do I sum the current and multiply by the voltage or do I average the 3 phases' current x V x 1.73?

To calculate the total power in watts used by a service panel with three-phase power, you would multiply the average current for each phase by the voltage and by the square root of 3 (√3 or approximately 1.73). This accounts for the fact that power in a three-phase system involves the line-to-line voltage and the square root of 3 relationship. So, the formula for total power (in watts) would be P = (Iavg x V x √3).

What to do with ground wire in wall when wiring metal light fixture without ground wire into plastic outlet box with ground wire Basically wall has 3 wires fixture has 2 and no place to ground to?

Don't worry about it some fixtures have no ground terminals. just shove the groung wire to the back of the box.

Correction, if the fixture is metal and it shorts out, the metal surrounding the fixture could become electrified. That's why fixtures today are normally grounded to their mounting plates and then the lead is attached to the incoming romex. In the past, attaching these plates to metal boxes (either grounded by an incoming wire or grounded to the BX cable) eliminated the need for a ground wire. If the hot wire hit or shorted to the fixture, it would blow a fuse or circuit breaker. Many electrocutions and fires later, the folks at Underwriters realized that even that method of grounding wasn't sufficent (the old aluminum boxes and bx cables were crappy conductors. Solution; (and I practice what I preach because I remodel many old homes) get a little creative and spend the extra time to wrap a little ground wire to a mounting screw, or piece of metal, on the mounting plate of the fixture and then attach it to your incoming romex ground. On an old fixture, it could mean the difference between a fire and a tripped circuit breaker. If you have any metal boxes, old or new, ground to those too.

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Connect a pigtail to the metal canopy, and use a wire nut to connect the safety ground to it.

How much electricity does an average restaurant use per month?

The cost for electricity for one year for a club restaurant and bar depends on a variety of factors. The local cost of electricity per kilowatt hour is one important factor, and the size of the club is another. Typically you can expect that the electricity will cost at least $1,000 a month.

Why can uncontrolled electricity be so dangerous?

Uncontrolled electricity can be dangerous because it can cause electrical shocks, which can disrupt the heart's rhythm and lead to cardiac arrest. It can also cause burns, fires, and explosions. Additionally, uncontrolled electricity can damage electrical devices and infrastructure, leading to costly repairs and downtime.

What difference in current amperage makes an RCD trip?

RCD stands - Residual Current Device. Normally It measures current on phase & neutral and if there is any change or difference (Should be Phase I - Neutral I = Zero) even 30mAmps RCD trips to break the circuit to avaoid any damages to equipments as well as human beings. Its same as ELECB / RCCB.

Does a circuit breaker work because of too much charge?

Saying the answer to that question is "Yes" would be incorrect, but, equally, saying the answer is "No" would also be incorrect!

In asking about charge the question is asking about the wrong electrical unit because some charge by itself won't trip a circuit breaker: the charge has to flow at a high enough rate to cause the circuit breaker to trip.

A circuit breaker works because it is designed to trip to cut off the flow of current if and when that current exceeds a certain amount.

The rate of flow of charge is called an electrical current.

An electrical current is measured in amperes - "amps" for short.

One ampere is equivalent to a flow of charge of one coulomb in one second.

Equally, one coulomb is defined as: the charge transported by a steady current of one ampere in one second.

One coulomb is also defined as: the amount of excess charge on the positive side of a capacitance of one farad charged to a potential difference of one volt.

What is a 3 way electrical outlet plug?

Usually referred to as a 3-prong plug if we are talking about a normal home electrical issue. It is a "male plug" which fits into a "female receptacle". It has one rounded prong (Earth ground) and two spade like prongs which are "Hot" and "Neutral". The orientation of the third grounding prong insures that the Hot and Neutral are corrected properly to your appliance. This is most important when the appliance has a metal outside to reduce shock hazard.

In typical installations Black wire is connected to Hot, White to Neutral and Green to Ground. Neutral and Ground are bonded together at your electric box so at any outlet the resistance (as measured by an Ohm Meter) would be quite low.

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A three-pin plug contains of neutral plug(left),live plug(right)and earth plug(up).The live wireis usually in the color of brown while earth wire is in the colour of green and yellow,and neutral wire is in the colour of blue.Live plug is connected with the elctrical supply.The live wire carries a voltage which drives an electric current through the electric appliance.The neutral wire offers a re-turn way for electric wire while the earth wire is a safety deivce.It protects us from electric shock in case an electric appliance is faulty.