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FAQ

at the end of power cable are 2 wires

I don't know what you mean by 302cm power cable. When it has 2 wires, one if usually the hot (power) and one is the ground (earth.) I don't know much else that'll help you, sorry.

What is the role of the power cable shield?

General cable shelf life is 10 years, look at the jacket and the insulation with or without cracks, shake the insulation resistance of the general do not breakdown can be used, but the best people to do some pressure test. The withstand voltage test must have been used.

So I've had my laptop for about a year and a half now and I've gone through 4 power cables, 3 non-factory. What happens with each one is, I plug it in, the blue light surrounding the hole turns on, the end of the power cable that plugs into my laptop gets super hot and either melts the power cable, or when I plug the cable in, the light won't come on unless I have it in just right. This usually starts to happen between one and three months after I get a new cable. It's starting to go through them faster now, any ideas?

Get it repaired. There might be a short circuit inside the socket. It will ruin your computer if you dont act now. You will lose your laptop or spend more if the laptop itsel gets damaged.

I bought one on OKorder and thought it was just a regular outlet power extension but it's not.. what is it used for? 10 points

so okorder /

What happen's when you just yank the power cord out from the electronic (Computer or TV) while it is still running? Does it blow a fuse or something? And what should I do to fix whatever the problem is, assumming that the electronic doesn't turn on after i yank the power cord out?

Yanking a power cable out of a PC that's running, could lead to a voltage spike. This can fry your power supply, and possibly go further. (Motherboard, ram, graphics card) Same thing, with having a computer power cable plugged into a surge protector, and then plugging it into the power supply. YOU, can replace the components of a Personal Computer. It's too technical and dangerous to try it with a TV, unless you're a qualified tech, and have the required tools.

Ok, i know it is definitely a NO-NO to run my power cable through walls, but, what if I run the power cord through only to pull it out behind my entertainment center from the wall-plate my other cables come out, and plug in a surge protector?

Try running a plastic conduit on the face of the wall and paint it the color of the wall instead.

Have a 480 volts 3 phase 16 amp motor. Need 400 ft of extention cord. Is is OK to use a SOOW 10/4 cable, the voltage drop is 2.67%(12 volts). Machine is powerd by a generator that I can run at 500 volts to counter the voltage drop.8/4 cable cost twice as much, but the voltage drop is 1.7%(8 volts).

If you have the ability to increase the voltage to compensate for the volt drop and the cable has sufficient current carrying capacity, then you are fine. The volt drop will cause a little wasted power but nothing compared to cable costs probably. Presumably your boosted voltage generator wont be powering anything else or that will give you problems Edit, Cables are rated in rms voltage

If you have an electrical device (e.g. a laptop), you'll sometimes notice that near the place where you plug the power adapter into it, there's a sign. It's composed of 3 circles, minus on the left, O inside a C in the middle, and plus on the right.What is this? And if I want to read/learn more about it where should I go?

If you look at the jack that go inside the power input you will see that it is an outside connect and an inside one.The O is the inside connect and the C is the outside one.Because it is a DC power adapter it has a + and - polarity .O,the inside ,is the plus and C,the outside,is the minus. Also on the adapter you can see the same thing! This is because some brands use the outside connect as + and you can burn your device if you use it!!!!