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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
Can Socket outlets be connected to different phases?
This is normal practice - but the loading of each phase should be roughly equal. In the UK, electricity is distributed as 3-phase but domestic premises only ever have single phase supply - in any street, the houses will be connected in roughly equal numbers across each phase.
They are all made of metal, which is known for its strength and durability. Metal tools and machinery, metal filament in a light bulb, and steel girders used in construction all rely on the properties of metal to serve their respective functions effectively.
Is it difficult to differentiate a SPST switch from a SPDT switch?
No it is not hard to tell them apart. A Single Pole Single Throw switch will go directly from the on position to the off position breaking the circuit. This is the type of switch that is used in homes for lighting control. A Single Pole Double Throw switch will usually have a stop indent which is the off position mid way through the throw. This is the switch that is used for a transfer switch when using a stand by generator in the system. The full up (on) position is usually connected to utility power. The full down (on) position is usually connected to the stand by generator.
What type of light is a light bulb that uses a filament?
A light bulb that uses a filament is also known as an incandescent light bulb.
What size miniature circuit breaker and cable do you need for a cooking unit?
You would have to install:
- a socket outlet with prongs of the correct size - which must include a ground prong;
- fed by wiring of the correct size;
- protected by a circuit breaker of the correct type and size;
all to match the maximum current that will be drawn by the cooking unit you plan to use at that location.
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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.
Which is not a type of home circuit?
Wind circuit is not a type of home circuit. The common types of home circuits are electrical circuits, lighting circuits, and dedicated circuits.
Why would three phase be used instead of single phase?
Three phase electricity is used instead of single phase for industrial situations. Industries use three phase electricity instead of single phase to operate electric motors driving heavy machinery. Three phase electrical motors produce more power from the same amount of electricity and maintain steadier speed. Small portable motors such as drills and mixers use single phase. Motors used around the house are single phase. Motors used to run large industrial machines use three phase.
How do you remove and check wiring in a wall socket?
The safest way to check a wall socket outlet is to use a plug-in "Household Socket Outlet Tester" that you can buy in most Do-It-Yourself stores.
Always read the instructions that come with it before you atttempt to use it.
What does a three phase motor look like?
A three-phase motor typically has three sets of windings arranged 120 degrees apart around the stator core. It is larger and more robust compared to single-phase motors, with a more complex wiring configuration. The motor may have six leads coming out of it, instead of just two like in single-phase motors.
A static discharge. The friction from walking on the carpet builds up a static charge on your body, and when you touch the metal doorknob, the excess charge is quickly released in the form of a static discharge, creating a shock.
The question doesn't say what type of household electrical service is being used. White wires are not used on 50Hz 230V circuits so it is probably a fan for 60Hz 120V...
If the asker of this question already knew how to use an electrician's test meter to check which wires go to where, would he or she be asking this question here...? If you get any other answer here, you might attempt to do something you shouldn't be doing, and that may cost someone a shock, a home fire, or even their life.
<><><> Without any connection diagram or installation leaflet to explain how to connect this unit, whilst the fan unit is down on the ground and completely unconnected to anything an electrician's test meter could be used to find out which wire, if any, is a grounding wire - but, it must be said here, you should only attempt to do this if you already know how to use a test meter to measure resistance.
You would be using the test meter to find out if one of the wires is a grounding wire as it would be connected only to the metal external casing of the fan unit and to the motor's frame. (But NOT to its windings - those would be connected to the motor's hot and neutral connection wires). You would use the lowest resistance measurement setting and hold one meter probe into good electrical contact with the fan unit's metal casing. Then touch the other probe first onto the thin bare copper wire and then, separately, on the thick copper wire after removing its green end cap. If you find there is no resistance to measure - just an open circuit - then the wire you are testing is not connected to the metal casing so it is not a grounding wire.
If you have found out for sure which wire is a grounding wire then you should connect it to the bare copper - or green colored - ground wire that comes within the circuit cable from the breaker panel.
Depending on which of those two wires was the one your testing found was not a grounding wire, you then have to cover any exposed copper on that wire with insulation tape and tuck it into the ceiling connection box completely unconnected to anything. (Same applies to both of those wires if you found that neither of them was a grounding wire.) The remaining two wires are probably for hot and neutral and either one could be wired to the switched hot feed and the other one to the neutral. If the fan seems to be running ok with only a hot and a neutral wire but with no connection to ground then, if the fan unit has a metal casing, using it without a connection to ground is unsafe and in many places could even be illegal. Having said all that, if you don't have a connection diagram or installation leaflet for that fan it is probably best to just dump it as "useless old scrap" and go buy either a new one or a very good second hand one that has got an installation leaflet or at least a connection diagram! <><><> 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 and what you could safely do yourself. 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.
oh i love bright red
All shades of blue go great with Red, especially navy and electric
Teal is a wonderfully color as well just make sure its not too bright that it takes away from the red
Green is also a lovely color but make sure its not neon or too vibrant that it would clash,
Gold is an amazing color to fit with red
White,Black and Grey make red stand out
and especially black makes it look vibrant
Does wodden causing from a pencil conduct electricity?
The only part of a pencil that will conduct electricity is the metal band that holds the erasure and the lead graphite mixture that is used to put a mark on a page.
No, it is not safe to plug a British device directly into a 220v US NEMA 6-20 outlet using an adapter. The voltage difference may damage the device and pose a safety hazard. You would need a voltage converter to safely use the British device in the US.
Why does tungsten heat and light up but copper wire does not?
Tungsten has a higher melting point than copper, making it more resistant to heat. When an electric current passes through tungsten, the high resistance causes it to heat up and emit light. Copper, on the other hand, has lower resistance and does not heat up or emit light as significantly when used in electrical applications.
How by moving at the speed of light you can travel in future?
The laws of physics say you can't travel at the speed of light. It's impossible. You can get arbitrarily close, but accelerating an object with a rest mass to the speed of light in a vacuum would take an infinite amount of energy.
I'm going to recommend a couple of books to you that may answer what you were trying to ask. Obviously most modern physics texts are going to discuss relativity to some extent, but the Feynman Lectures on Physics is a good investment if you're interested in physics generally. Alternatively, for a more readable explanation that's not as rigorous, the Mr. Tompkins books by George Gamow attempt to explain what the world would be like if certain physical constants were different... in particular, in one he shows what it would be like if the speed of light in a vacuum was around 60 miles an hour. Finally, you might try Geometry, Relativity, and the Fourth Dimension by Rudy Rucker if you can find it at your local library.
No, it is not safe to have a wire hanging out of an outlet. If you have a four-wire connection but only a three-prong outlet, this could pose a safety hazard. You should have a qualified electrician properly install a matching outlet to avoid any risk of electrical shock or fire.
What is a set of contacts that belong to a single circuit called?
A loop refers to a set of contacts that belong to a single circuit.
Does a thin wire has more RESISTIVITy or a thin wire of the same material?
Resistivity is a property of the material only, not of the dimensions of the wire.
The resistance of a wire is the resistivity times the length divided by the cross-section area. So a long wire has more resistance, a thicker wire has less resistance, even if they are both made of copper with the same resistivity.
If you were to do this, you would likely experience a severe electric shock due to the current passing through your body. This could cause serious injury or even death. It is extremely dangerous to mix water and electricity, so it's important to never attempt anything like this.
What is the maximum amps for a sub panel?
The maximum amperage for a subpanel is typically determined by the size of the wire feeding it and the rating of the main panel. It is common for residential subpanels to be 100 or 200 amps, but it can vary depending on the specific installation and electrical code requirements. It's important to consult with a qualified electrician to determine the appropriate ampacity for your subpanel.
What do you call an element that has lost an electron?
Elements that have gained or lost an electrons are called IONS. Ones that gained electrons (non-metals) and are therefore negatively charged, and known as ANIONS, and those that lost electrons (metals), are positively charged and known as CATIONS
Why multiply single phase power by 1.732 to get equivalent three phase power?
Multiplying single-phase power by 1.732 (which is the square root of 3) gives you the equivalent three-phase power because in three-phase systems, the power is not simply additive. The phases are 120 degrees apart, so to accurately calculate total power, you need to account for the phase shift between them. The square root of 3 helps adjust for this phase relationship.
How can you convert a 6v battery to AC power?
Use an "Inverter". They make a lot of inverters for 12v but few for 6v. You could use 2 6v batteries hooked in series though. Just make sure the inverter is big enough to power what you wish. A 300 watt one will power a electric razor, or small electronics fine. A 1000 watt would power a computer or a laptop also, etc.
