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Electrical Wiring
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4,935 Questions
If you asked this question because you have no experience of working on the latest household power circuits and you hope to get enough information on this site to be able to do the job properly and safely, it is best to warn you not to rely on getting accurate information from this site about such a potentially dangerous subject. By asking this question you probably aren't quite ready to take on this particular task. Whether it is legal or illegal to use a radiator pipe going into the ground instead of running a proper ground wire do this job depends entirely on the Wiring Codes or Regulations for the locality (Town/State) and on the exact location of the GFCI outlet: if it is anywhere that is subject to water splashes or spray - such as a pool-side area, or in any room supplied with running water pipes, such as a kitchen, bathroom, shower room, etc. - in many places nowadays it is actually illegal to attempt to do this kind of work unless you are already a licensed electrician. Really, don't do this one yourself. Electricity is far too dangerous to handle if you don't already know your local Wiring Codes or Regulations or you have not been trained how to do this work. For your own safety and that of anyone else who may to use the appliance connected to that outlet, ask a professional licensed electrician to advise you or to do the work for you. If you do this work yourself, always turn off the power at the breaker box/fuse panel BEFORE you attempt to do any work AND always use a meter or voltage indicatorto insure 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 are form A form B and form C contacts?
These are contact arrangements that can be found on switches and relays. The form designation is fairly old and rarely used now. Form A: a single, normally open contact that closes upon actuation. Form B: same as A, except in reverse. A normally closed contact that opens. Form C: A form A contact connected to a form B. The Form C contact has three wires, NO (normally open), NC (normally closed) and C (common). Upon actuation, the NO contact closes (continuity from NO-C) and the NC contact opens (no continuity from NC-C). It is more common now to see the following designations: Forms A and B can also be referred to as single pole-single throw: SPST-NO = Form A SPST-NC = Form B and Form C can be referred to as single pole-double throw: SPDT = Form C
Do you need an adaptor in England?
No, you don't need to use any adaptors if you already live in England! That's only joking! You are probably asking: "If you travel to England from somewhere else, would you need to use an outlet adaptor to run small electrical appliances?" Some small appliances, such as electric shavers, mobile phone chargers, etc., are marked to run on a wide range of voltages, say from 110 Volts to 240 volts, and on 50 Hz as well as 60 Hz.
So, as long as you know your electrical things, which you want to take with you to England, were made to run on 230 Volts, 50Hz AC (the UK's standard household power) as well as on whatever voltage and frequency you normally use at home, you should be ok. However, the UK has socket outlets which are different to most of the rest of the world. So if you live in another country you probably will need to buy an international travel adaptor. Most international airports have shops which sell them. For more information please click on the Related Questions shown below.
Don't check transformer windings with an ohmmeter.
All you can do is determine if there's a break in the wiring. If it's reading as "open", then you know that the transformer is broken. It is not repairable without a considerable effort.
I'm curious as to how you obtained that transformer. It's quite dangerous and you shouldn't play with it unless you know what you're doing. You are likely to be killed if you try to power it up. DO NOT try to use this in a prank. There are lethal consequences.
What is in the IEE On-Site guide?
The On-Site Guide is one of several publications that provide guidance on various aspects of BS 7671:2008 Requirements for Electrical Installations, commonly known as the IEE Wiring Regulations.
It provides a background on the intentions of BS 7671:2008 and provides a simple guide to that publication. Electricians, however, are responsible to ensure that they comply with the requirements of BS 7671:2008.
How do close-circuit jacks work?
These jacks are used in audio systems to patch in a piece of outboard gear. When you plug in the cable, the circuit is interrupted and sent to the external gear. When you remove the cable, the circuit 'closes' and sends the signal on through. A headphone jack is a closed-circuit jack. When you plug in your headphones, the circuit to the internal speaker 'opens' and sound is sent only to the headphones. When you unplug them, the circuit to the speaker 'closes' and you hear sound through the speaker again.
What are the red balls for on the wires on a tower?
Pilots flying in an airplane can't see the wires and might crash into them. The red balls act like flags to alert the pilots that the wires are there. Good question!
How hot does a 75 watt light bulb get?
When measured with an infrared thermometer it read 169.9 degrees F.
What would happen if caught stealing clothes from a clothes store?
You would probably be either kicked out of the shop or taken to the security area behind the shop. The police would be called, and then if you're only a teenager, your parents would be called. (!) You might not be allowed back in the shop, and might have to pay a fine. ( $$$ )
Can you install a double pole switch in a 120V circuit?
=== === Yes but it is redundant. The only place that you can open the neutral and hot wire at the same time in a North American system is when isolating a load in an explosion proof installation All the rest of the time the neutral remains unswitched. A two pole switch is used on 240 volt loads as code states that both legs must be disconnected from the load. If only one leg is disconnected there will still be a 120 volt potential on the load to ground. <><><> As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
What do it mean if the laars pool heater control panel says Hi Lim SW?
It could mean that the High Limit Switch has failed or is about to fail. You should call a qualified swimming pool tech to trouble shoot the that heater control component. If he should fine that it is indeed faulty - replace it. He should further check ALL the other components to make sure that they are performing to their potential or to factory specs. This service could save you $$$ in the long run. The heater is trying to tell you something ~ and that is to get it serviced soon. A failed High Limit Switch could perceivable let your heater run or fire or continue to burn even though the pump has shut off. And as you may have already found out ~ nothing works unless the pump is working or running. k
Black is used for the "Hot" wire.
White is used for the "Neutral" wire.
Green (or bare wire with no insulation) is used for the "Ground" wire.
IF YOU ARE NOT ALREADY SURE YOU CAN DO SOME ELECTRICAL WORK
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do any such work yourself, always turn off the power at the breaker box/fuse panel BEFORE you attempt to do any work AND always use a meter or voltage indicatorto insure the circuit is, in fact, de-energized.
What is a single pole single throw?
It is a type of switch or relay where there is just one set of contacts. The contacts can be open or closed. There are two terminals. A standard light switch like you would find in your home is a good example of a switch with a SPST contact.
What happens to voltage during a short to ground?
Basically, the same as if you had a short to neutral, since the neutral and ground are tied to the same bus bar in the breaker panel. The breaker should trip, or the fuse should blow. Supply of voltage then stops.
<><><>
See the answer to the Related Question about GFCIs - shown below - for information about circuit protection when even a small current flows to ground.
Where can you find a wiring diagram square d 2601 ag2 drum switch?
Did you find this diagram? I need it also to install a Hobart Disposer
What gauge ground wire should be used for a 220 V 3 HP motor in a well 400 ft deep?
No responsible person will answer this question without observing the situation first-hand. If you don't know how to calculate the answer yourself or look up the table in your local code books, then you shouldn't be installing a motor that size. 220V, 3HP motors are going to be multi-phasic, and that's going to require special connections.
Consult a local electrician.
A plastic which will soften when heated and harden when cooled.
What is the basic insulation level of various electrical equipments?
BIL or basic impulse insulation level is the dielectric insulation gradient of a material tested to withstand the voltage stress at a voltage impressed between the material and a conductive surface beyond the BIL rating, an electric tracking starts to occur which will then result into an arcing flashover to the conductive surface. In addition it is the capacity of an equipment to withstand mechanical stress..like lightning strike without causing any damage to the equipment...
In a new information system, on a directinstallation, the new system is installed and quickly made operational, and any overlapping systems are turned off. It is also know as immediate cutover.
What is a electric transformer?
A combination of inductors coupled together by high mutual inductances.
Or more simply several coils wound together on the same armature.
