Q:Can we use pilot wire protection to protect overhead line, and which country use this scheme ?

Pilot wire protection can be used anytime anywhere. The question is not where it is used but why, and is it required. Pilot wire protection provides better discrimination of fault location, than, say, an impedance or distance relay. If the zones are too close, pilot wire may be the only feasible solution. .

Q:I bought a bathroom fan timer and tried to install it. It has four wires and the wall switch circuit has only 3 wires. What do I do?

3 Wire Switch

Q:Broken dryer, 4 bladed wire, Old dryer available to me, has a 3 wire cord, can I swap the cords?

the guidelines basically recently replaced interior the previous couple of years requiring new properties to be geared up with the 4 prong recepticals rather than the three prong recepticals for 220 V merchants. in the experience that your dryer is fantastically new, interior the final 4 years or so... the twine that is hooked as much because it now could have the skill to be interchanged with a 4 prong twine by basically buyingh a 4 prong twine and screwing the eylets to the surprising connections at the back of your dryer. in the experience that your twine won't be able to be switched out, then i'd pass backward and replace the 4 prong container with a three prong container. i'd do it this sort so as that one and all your electric connections are interior a receptical, rather of having 220 Volt wires basically twine nuted at the same time.ok good success.

Q:why use a large gauge spark plug wires

What is High Tension Electricity? In all my engineering classes, never heard of it. I wouldn't use large gauge spark plugs unless they were specified. If you use them and they're not specified, you could ruin the spark plugs for too much voltage.

Q:i know nothing about wire. thanks. :|

Solder wire has a lower melting point, allowing you to melt it onto something else. In it's wire form, it will also snap very easily. (not good for fastening things together). Mechanical wire (I'm assuming electrical wire), is designed to withstand high temperatures (and hence, electrical currents), and are usually be bent much more. It's also usually sheilded in rubber (e.g. electrical cords, computer cables, coxial (tv) cable, etc).

Q:i have a 00 gmc yukon and tried installing my cd deck. i pulled off the original harness from the stock deck radio and now its just all wires (its my first so i didnt know), i connect the alpine deck wires and tried to connect them all together. i had a few figure out, except a small noise coming from my stock tweeters every time i step on the pedal. then my speed odometer sensor was going with the bass of my subs... whats wrong? can someone find me a chart of what color wires supposed to go where? thanks for your help

I think you are just better off doing a factory amp bypass and there shuld be a harness you can buy that will hook from the wire behind the factory amp to your deck.

Q:I always see birds hang on the wires but never get fried how do they do. It?

Dear Gluebeh, That would be a problem only if they touched two wires simultaneously. I have heard of that happening to unfortunate squirrels.

Q:Electron flow in a conducting wire.?I have some confusion regarding the flow of electrons in a wire when voltage is applied across it. Intuitively, i see that when i apply voltage across the ends of the wire say by a battery. The voltage pushes the electrons in the wire. As, a result the electrons flow in straight direction rather than going zig-zag. Some of the electrons reach the positive terminal of the battery, now my query is what happens when the electrons reach the positive terminal.Do they loose all their energy? Also, how is there a constant flow of electrons in the wire because since electrons are flowing constantly from the negative to the positive, is there no instance all the free electrons in the wire have reached the positive terminal? Basically what i mean to say is do the free electrons ever gets extinct? I am sorry if my question sounds stupid but can anyone please explain me a little bit in a conceptual manner?

The pace of the electron is variable relying upon the the style of energy you are dealing with. In our case, electrons waft within the conductor, though it's sluggish, it is only like ping-pong balls(Analogous to electrons) inside of a say, plastic pipe slanted down ward. When you provide a bit little bit of strain( i.E. Electrical Voltage or emf in our case) one pushes the other and the other one to the subsequent one so on momentarily (Which is very rapid action). This is how you to find the light turned on immediately once you turn the swap On. I feel is the brief answer for the query. Thank you.

Q:Please help. I am trying to fit a new light into a house with old wiring.My new light just has a connection block with 1 blue wire and 1 brown wire. When I removed the old light there are 5 wires coming from the ceiling. 1 black and 1 red coming from one lead and 1 black and 1 red coming from the other. Any ideas how I wire this up. Many thanks.

You have very old wiring if you only have 2 pairs of black and red wires in the ceiling. A modern installation will contain a third pair and also have green/yellow (or bare copper) earth conductors too. The following instructions will make your light work but you should get your wiring checked as soon as possible to bring it up to modern safety standards. One of the cables in the ceiling is carrying your supply current from the fuse box, the other is coming from the switch. You must connect the red wires together with a secure plastic joint block. This will send Live current down to the switch. Connect one of the blacks to the blue wire in the light fitting. This will make the Neutral connection to the light. Connect the other black to the brown wire of the light fitting. This will be the Live connection from the switch. If you have any green and green/yellow wires then you must connect these together because they are the earths. Make absolutely sure that you thoroughly insulate your joint blocks with electricians tape before you secure the fitting to the ceiling.

Q:When making pc boards with microcontrollers, oscillators, etc.. What is the right kind of wiring to use? Specifically:What material (e.g. copper)?What thickness?What brand?Where to buy?What's the difference between the stiff wire and easily bendable wire?Thanks.

It okorder is one company that sells all of these types of wire. If you search their website or catalog, you'll find wire in bulk as well as in pre-cut assortment kits that you can use. They also sell tools and parts that you'll probably be interested in