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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
On a 220 volt circuit where the white wire is common how many volts would the red wire be?
3 OR 4 . you only need 2 wires for 220, 1 phase is 120v between 2 of them its 220v . you also should have a ground for the third wire ,and the newer stuff requires a neutral or white wire for the 4th wire. hope i helped , D
What wire goes where on a L5-30 3 pronged plug?
This is a 30 amp 125 volt device. The black wire goes on the smallest pin, should be a brass coloured screw, the white on the next in size, should be a silver coloured screw and the ground wire on the pin with the inward hook on it, green coloured screw.
Can 120v bulb work in a 240v socket?
== == Assuming this inquiry is a request for information rather than related to any practical application, here is the answer: It won't work for long. If it was a low-power bulb it would probably just go "pop" and be useless but if it was a high-power bulb it might even explode with a loud "bang", sending broken glass shards in all directions!
So don't try to do it as an experiment because the result could be very dangerous.
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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.
What color is the line wire in an electrical system?
The only designated colors in electrical wiring in North America are White as a neutral and Green as a ground wire. All other colors can be used as live wires. There are specific colors designated by the electrical code for phase wiring.
Answer for European Systems
The relevant regulations define all conductors, other than the protective (earth/ground) conductor, as 'live' conductors. In Europe, the line conductor has a nominal potential of 230 V with respect to the neutral conductor.
In Europe, the the three line conductors of a three-phase system are identified with brown, black, and grey insulation, respectively. For single-phase systems, brown is normally used. Neutral conductors are identified using blue insulation, and protective (earth/ground) conductors are identified using green/yellow stripedinsulation.
Why does your fluresant light not work after you installed a ballast?
Do you have the right ballast for the type of lamps you are using? Check on the nameplate of the ballast to see it matches with the type of tubes you are using. Are the tubes snug in the lamp holders? Is the fluorescent fixture grounded using the fixture ground screw? Do you have voltage to the ballast? On most lamp start ups you can see the lamp filament glow on each end of the tube. If you don't see the filament glow on any of the tube ends, check the wires going to that lamp holder.
Can a mercury vapor light that is 240 volt work on 208 volts?
The lamp may not fire. Check the ballast to see if it is a multi tap. Most of the newer ballasts have variable taps for different voltages starting with 120, 208, 240, 277 and 347. This is for the convenience of the customer so as not to have many different ballasts for spares, just one that will do all. A ballast is specific to the lamp wattage.
Is it safe to run a 230 volt with 110 electric?
No a 230 volt appliance should not be pluuged into a 110 volt socket (And vice versa) you need to buy a converter that can be plugged into the 110 volt outlet then the appliance can be plugged into the converter.
What is an example of a circuit interrupter?
A ground fault circuit interrupter (GFCI) is an example of a circuit interrupter. It is designed to quickly shut off power in the event of a ground fault, which helps prevent electric shocks and fires in electrical circuits.
What gauge wire is best to use for 60 amps?
Several different factors must always be considered when deciding the correct wire size to use:
- amperage, which is the current to be supplied, measured in amps?
- length of wire-run?
- installation situation/site conditions?
- run inside a conduit?
- exposed to the air fixed to a wall?
- extreme heat?
- damp conditions?
- underground?
To get the right answers refer to the Wiring Codes or Regulations for your locality. (Town/State.)
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A #6 copper wire with an insulation factor of 75 or 90 degrees C is rated at 65 amps.
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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.
What is distance needed around electrical panel?
The National Electrical Code (NEC) typically requires a clearance of 30 inches in front of electrical panels and 36 inches of clearance in front of equipment doors. However, local codes may vary so it's important to check with your local building department for specific requirements.
The country was Denmark - the physicist in question was Hans Christian Oersted.
However the majority of the work in this field was undertaken by British physicist Michael Faraday and continued by James Clerk Maxwell who was Scottish.
Can you describe a situation where a series circuit could be used to operate an electrical device?
A series circuit could be used to operate a string of Christmas lights. Each light bulb would be connected in a series, so that if one bulb burns out, the entire string would stop working. This setup ensures that all lights in the series receive the same amount of current.
What is the importance of electric fan?
Electric fans are important for providing cooling and ventilation in indoor spaces, helping to circulate air and maintain a comfortable environment. They can also help to improve air circulation and reduce humidity, which can prevent mold and mildew growth. Additionally, electric fans are energy-efficient and can be a cost-effective alternative to air conditioning.
Does the transformer convert the current from 240 volt to 120 volt?
A1: IF it is for a Universal Power supply for electronic equipment, YES it can, as long as the equipment can work with 120V and less than 12 Amps of current. (12 Amps is 80% of a 15 Amp Circuit-That is the Limit of Power through the Wiring). If you need more power (Tim Allen from Tool-Time comes to mind,) then you need to contact an electrician to string new wiring to the outlet.
A2: IF it is for a specific piece of equipment that needs 240V to run, (Stove, Dryer, Welder), then NO, you cannot 'convert' the existing 240V plug.
A3: IF it is for a 'Euro' appliance (Less than 1000 Watts power), IF the frequency of the motor is for 50 Hz, NO, as the speed rating depends on that frequency.
A4: If its for a HDTV or similar appliance, NO, as the appliance is made to work in those countries where the 240 plug works. Adapers are available for the power supply, but for Region DVD players, it will not change the region you are in.
A5: IF it is for an incandescent light fixture, YES, the plug can be converted, as long as the current to the lamp does not exceed the wiring. Typical lamps in North America are designed for 60W lamps, They consume 60W of power when operating, at 120 Volts, and have 1/2 ampere of current in them. 18 Gauge AWG wiring is used for lamp cord as a minimum to handle the current. IF its a EURO lamp, designed for 60W bulbs, at 240V, it will only handle 1/4 Ampere current, and USING a 60W light bulb is TWICE as much as it is designed for. IT would work at 30, but IT IS NOT RATED for 120V service. If your house burned down, the insurance would not cover the fire because the lamp is unapproved for use in North America.
5 different scenarios, 2 will work, 3 will not. Generally you would plug the correct appliance in the correct socket in the correct country of purchase.
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Do this electrical work only if you feel confident that you can do it safely. If not then this is the procedure that an electrician would use and you would be able to follow what he is doing. Again an electrician should be your first choice. This answer assumes that the old receptacle was 15 or 20 amps and the new receptacle will be 15 amps. If you consider doing this the first thing is SHUT THE MAIN BREAKER OFF. Use an auxiliary light source to see when working in a dead panel. Always keep in mind an ARC FLASH ACROSS HOT MAINS HAS ENOUGH HEAT TO PEAL THE SKIN OFF OF YOU. Before an explanation of how to do this you should keep in mind that this is for a single receptacle only. If any other receptacles are on the same circuit they will also be changed to 120 volts. That said OK, any 240 volt outlet can be changed to 120 volt by removing the white wire from the 2 pole breaker and inserting it into the neutral bus bar. Remove the other wire (probably black) from the breaker. Remove the 2 pole breaker from the breaker panel. Install two single pole 15 amp breakers into the hole left by the 2 pole breaker. Leave both of these breakers turned off. Connect the black wire that came off of the 2 pole breaker on to one of the new single pole 15 amp breaker. Re install the cover to the electrical panel, this end is finished. Remove the existing 240 volt receptacle and install the new 120 volt receptacle. Materials can be purchased at local building supply store. Remember to take the electrical panel data with you so you have the information for the 2 new breakers. Once you have the receptacle installed, identify on the electrical panel door what the breaker is used for. Leave the unused breaker in the off position. Turn the main breaker back on. Test the new receptacle with a lamp to make sure every thing is OK.
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yes, you have two hot lines in a 240 outlet (!!!in North America!!!), disconnect one of them from the breaker box change breaker to a single throw and wire in new outlet
It may not be as simple as above.
Is the old wire heavy enough for the new circuit? You cannot increase the current rating above that of the old circuit, but you can decrease it safely. How many wires are there? If there are 4, you will have an unused hot. If there are 3 you need to switch one hot to be neutral to your new outlet.
Anyways, you need to:
- Get a new outlet you wish to install (based on wire size)
- Get a new breaker correctly sized to the outlet. !!!Get a new breaker correctly sized to the CONDUCTOR!!! A breaker protects the conductor, not the outlet. Although the two go hand in hand, a rule of thumb is to size the breaker based on the wire, or vice-versa(load). (eg, (CEC) #14=15A, #12=20A, #10=30A)
- Remove the old breaker. Wire the black hot wire to your new breaker. If the other hot was a red wire and there is a neutral(3-wire), cap the red wire with a wire nut. If there is no neutral the old, unused hot needs to be connected to the neutral bus. (If for some reason you don't have a white wire (like you have a red-sheathed run of heat-ex) wrap the new neutral with white tape (and only really do this if the wire is larger than #6). If for some really strange reason you have two black wires STOP. You won't be able to tell which is which at the other end and need to pull new wire. or hire an electrician to meter it out) If you have an old neutral wire check that it is tightly connected to the neutral bus. Now the circuit is wired in the panel for 110V. Leave it off for now.
- Replace the old 220V outlet with the new 110V outlet. If you had to mark wires with tape in the panel do the same here.
- Smoke test! Turn on the breaker and see if it works. If it does, good job. If it doesn't, turn the breaker off and test your work.
How electricity related to physics?
Electricity is a branch of physics that deals with the flow of electrical charge through conductors. It is based on electromagnetism theory, which explains the behavior of electric charges and their interactions with magnetic fields. The study of electricity in physics covers topics such as electric circuits, electromagnetic induction, and the generation and transmission of electrical power.
What are insulated wires made out of?
Insulated wires are typically made of a conducting material, such as copper or aluminum, surrounded by an insulating material like rubber, PVC, or Teflon. The insulation is essential for protecting against electrical shocks and preventing short circuits.
If a line is tagged De-energized is it safe to work on with your bear hands?
If you are asking this question, then it is not safe for you to work on ANY electrical lines...
But, to answer your question, a tag does not mean the line is "de-energized". ALWAYS check lines with the appropriate testing equipment (volt meter, etc) and never rely on a tag before working on any electrical lines.
I can only hope this question was a joke.
18 ampers 3 phase 415 volts how much kilowatt?
Volts x Amps = Watts, divide with 1000 and you get kilowatts.
List three uses for a series circuit and three uses for a parallel circuit?
Series circuit uses:
- Christmas lights, where failure of one light does not affect the others.
- Flashlights, providing a constant voltage to the bulb.
- String of diodes, ensuring that current flows in only one direction.
Parallel circuit uses:
- Home electrical wiring, allowing multiple devices to operate independently.
- Battery-powered devices, ensuring each component receives the full voltage.
- Wall outlets, enabling multiple appliances to be plugged in simultaneously.
Ballasts can get burned due to overheating caused by factors like excessive voltage, poor ventilation, or a short circuit. Over time, this can lead to damage that results in the ballast burning out. Regular maintenance and ensuring proper installation can help prevent this issue.
How long will it take to make an attic bedroom?
First of all, you should check will your local hardware store about such issues as fire safety, heating and cooling. Repairs in this department could take anywhere from an afternoon to months, depending on what needs to be fixed and how you plan to address it. Once you are sure your room is safe to be turned into a bedroom, you can decorate it! This can be as simple as moving furniture in, or as difficult as painting, building new furniture, and creating decorations. Time can vary significantly, so to answer shortly, it depends, because it could take more than a year, or it could take a few hours.
Yes a GFCI will work if the neutrals and ground are to together the main panel. This is considered the line side of feed side of the GFCI. Neutral and ground can not touch down stream from the GFCI or on the load side of the GFCI.
How can you get the 240 volt cut back to 208 volt without the use of a transformer?
Based on the numbers in your question, I assume you're in the US. If the 240V comes from a utility transformer feeding the building, you're pretty much stuck with what you've got. 208V normally comes from 208/120 three-phase service. If you have 240V, that means you have single-phase service. 208V single-phase wouldn't work, because the receptacles would end up with 104V instead of the required 120, so what you're really asking is can you get 3-phase, 208/120V service. If this is a home, almost certainly the answer will be no. If it is a small commercial building, then it may be possible, but the utility will probably make you foot the bill, and it will cost plenty. And transformers (3 of them) would be involved.
How does a ceiling fan help with a wood stove?
Hot air rises so they heated air created by a wood stove will tend to collect at the ceiling of the room. A ceiling fan will push some of the hot air down in the room creating a more even distribution of heat.
Items that commonly contain batteries include smartphones, laptops, cameras, portable speakers, remote controls, flashlights, and electronic toys. It's important to properly dispose of these batteries to prevent environmental harm.
