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FAQ

2 long striaght wires (20m each) ,each having a 1.0A current going up.The distance between the two wires is 1.0m(a) what is the magnetic field (magnitude and direction) at a point o.50m left of the wire 1?(b)what is the magnetic field (magnitude and direction) at a point 0.6m right of Wire 1?

Assuming Wire 2 is to the right of Wire 1: a) Bwire1 = (u*I)/(2*pi*r) = ((4*pi*10^-7)*1A)/(2*pi*0.5) = 0.000004 Bwire2 = 0.000000424 Btotal = 0.000004424 (away from wire 1) b) Bwire1 = 0.000003333 Bwire2 = 0.000005 Btotal = -0.0000017 (toward Wire 1)

EL wire, or electroluminescent wire, is a wire which... well glows pretty colors lol. I want to buy some to make a costume, but I have some questions. I have a feeling that it will degrade over time, but how long will it take? Or do they start to degrade immeidately like glow sticks? What is it that causes them to glow, a chemical reaction or something else?

Electroluminescent okorder ) have wire that lasts far longer. You can expect the shelf life of these wires to be about 4-6 years. At that time, the wire just doesn't stop working, it slowly breaks down the phosphor particles, and the wire will get dimmer over time. The expected working life of EL Wire is about 4-6,000 hours which beats your average glow stick by about 5,992 hours...

I know there must be a difference, and reason why some wires have a solid strand behind the rubber, or some have several strands. can someone explain to me how it works and the differences in wire. m trying to get my head into electricity. resources would be good too.

you ask a fairly broad question first, the larger the wire, the more current it can handle as far as stranded wire, it flexes more during use and vibration and heating, etc. the solid wire is the smallest size and most accurate diameter if that is important such as high frequency

On the wires leading to existing system I can see the main power lead. However all the other wires are different in color leading to existing valves. From the wire bundle two black wires (the only black wires) lead out to nothing and were left with no electrical end caps protecting. Manual says nothing on wiring valves. Any ideas on black wires? Or how can I splice in to existing system wires at valve point having one valve working at a time when system is operating? Am I going to have to get a new controler or run new wires existing controler?

As long as you have an extra colored wire and your controller will support the extra valve, it will work. I am wondering why you have 2 black ones though, unless one of them has a stripe. Normally multi-strand wire has only one of each color. To see a wiring diagram, follow the link below

How do you attach light wires to boat trailer frame?

The colour code for trailers is as follows, white-ground, brown-running, yellow-left turn, green-right turn and blue would be for trailer brakes if your trailer has them or auxiliary. If your adapter (on the Dakota) is hooked up properly those are the wire colours that run from your vehicle into the trailer lights and the signal lights will also be the brake lights.

Hi,I'm trying to install a ceiling light with a 3 wire configuration (white, black, ground) into a wire configuration of 4 wires (white, red, black, ground). This is configured for two on/off switches.So far, I have white to white, black to black, and ground to ground with the red capped off. This works with one switch perfectly, however when I hit the other switch, the circuit breaker blows.Please help, and thank you!

captain skalleywag is right. if the switch was originally set up for a fan the red wire is for the light and the black is for the fan. but if it is a 3 way fixture then the wiring is different. are both switches in the same junction box. if they are it is set up for a fan. if there is another switch on an opposite wall it is a three way.

whenever i try to connect two electrical wires by twisting them together, i hold the two wires paralell to eachother, grab them with needle nose pliers and turn it. it never seems to work though! if anything, it just breaks the wire and i have to strip more insulation! what am i doing wrong? thx

Twisting Electrical Wires

From one website I withdraw thru bank wire its 50 dollar fee.What ranges are it for bank wire? Internationally from private person to business.

The bank wire fee varies depending on the individual policies of the bank. Some banks charge for wiring, or receiving. Others charge of international wires. Still others may waive wire fees if you have a special relationship with the bank, such as a Premier Customer, or a senior citizen, etc. Check with your bank.