Q:ok i have 3 questions...i have a oldsmobile cutlas supreme and i have a 0 gauge power wire that is 17 feet is that long enough???? and i have 0 gauge ground that is 17 feet is that long enough....and about the speaker wire..i have 8 gauge speaker wire that is 25 feet..is this a good setup.make sure u answer all these questions please thank you..

8-10 awg could be extra desirable than sufficient for floor. Make a sturdy floor... run it removed from any the +ve and speaker wires... and make confident the bare metallic on the physique artwork is advantageous and clean... this could make each and all the version as you may understand between stable sound and a relentless humming on your audio gadget... sixteen-22 awg for audio gadget reckoning on your determination and producer suggestions. IMHO the audio gadget purely desire a sign and the decrease gauge does not make a great difference. in certainty a speaker run on 4 awg can sound worse than an 8 awg... however the right way is to fulfill a million/2 way and characteristic sixteen-22 awg. The lighter twine additionally ability you shop cable weight.

Q:I was re-wiring a light switch and a fan control knob and I accidentally cut a wire too short. This wire comes out the front of the fan dial and goes around to the back, connecting to another wire, thus placing a wire nut impossible. Can I just link the two ends together, then seal it with electrical tape? Or do I have to buy a new fan dial (which will cost $25, a cost I'm trying to avoid)? Will just the tape be safe enough?

No they are NOT absolutely necessary, however the typical DIY'er does not have the skills or the tools to make a splice the old fashioned way. You can solder the two wires together after twisting them together in line and then cover them with shrink wrap. If you know what I am talking about and have the tools then wire nuts are not absolutely necessary, however if you do not have a clue how to do this or the necessary tools are then yes wire nuts are necessary. Just twisting them together and wrapping the connection with tape is not a good way to go.

Q:im installing lights in my car and it says i need a 12v wire. can i use somthing more then a 12v wire? im hooking it right from my battery. what other wires can i use?

If it says 12 volt wire, it just means you need to supply the lights with 12 volts. Depending on how much power the lights pull, will depend on how thick the wire should be. If it is saying to use 12 gauge wire, well, then use some 12 gauge wire.

Q:I just installed a backup camera however I am having trouble wiring it. I've read that I need to tap into the reverse wire, however I went through many wires and couldn't figure out which one is it. My cameras wire is designed to be wired in the trunk, so the wire under the hood or dash is not a possibility. 2003 G35 Sedan

For the objective of? turning it on? NO! you should use that wire, faucet it for sure, with a speedy connect, for a 12V source wire, use a relay, and that 12V source wire, and that is advisable to do 2 body grounds, one for that 12V source wire for the relay to kick on/off, and one from the digital camera that you're powering from a right away link from the battery (use a 10A inline fuse)

Q:Has anyone ever used welding wire in their car audio setup?Is it more flexible or less than other car power wire? Is this a big problem?Is it a good or bad jacket?Would you use it again?I am looking at buying some welding wire from weldingsupply because it is .81 per foot. I would love to know if anyone has done this before and what they thought. The wire i am looking at is 4 gague.

First off- it is cheaper than audio power wire, you can buy it as thick as 3 ought, I've seen it used. But flexibility is a big deal when hiding power wire, at least I think so, and welding wire is not the most flexible but it is better than solid wire, and power currant runs faster through audio power wire because of the small cooper strands that make up the wire. Than in welding wire because it has thicker and not as many strands that make up the wire, currant will run slower. Will any wire work? yes........ go to a smaller local audio dealer and ask the owner for info

Q:The outlet box has 2 black wires capped together, 2 white wires capped together, 2 bare wires capped together, and a single red wire. The light fixture I want to install is a two bulb fixture that has 2 black wires, 2 white wires, and 1 bare wire.

The wires on your ceiling fixture are called ROMEX. This is the big casing that has two insulated wires and one bare wire. The bare wire is the ground. The romex coming into the box comes from the source and the other comes from the switch. Black is HOT coming into the box from the Romex that has only the black and white wires. To be sure about this, take the cover off the switch on the wall and see what wires are present there. This might show that a three way switch is installed somewhere if there is two switches that control that light. As far as the light fixture that you have, connect the two white wires and the two black wires together and then one of those pair goes to the white wires in the ceiling box and the other goes to the red wire.

Q:1994 crown vic but it seemed like only 3 or 4 wires matched up exactly and this one wire was way to short so i had to route it the best way i could the guy said it was the right set of wires but the car runs way better then it did just wondering should i change couple of wires around to make it fit or just leave it what does crossing the wires mean

doad ya evehh hard a' punctuation? GETCHA SUMM

Q:i need to know how much wire size i have to put for 380 volts supply

Mike is correct. What country are you in? China or Korea? I work as an electrician on industrial equipment. Building a 380 machine now for China. Anyway, it is current that counts. I have used 22 AWg for 480V voltage meters and 2AWG for 24V.

Q:Three parallel wires are each carrying a 4A current. ; wire A) is 6 mm from wire B) which is 3mm from wire C); The current in wires B and C are out of the paper, while A is into the paper. What is the magnitude and direction of the magnetic field halfway between wires A and B?I have tried using Biot-Savart Law but keep getting it wrong can someone please help? I also have an equation for two parallel wires but how do I relate it to two?

You can use the Biot-Savart Law, but it is confusing and kind of a waste of your time and space. For straight wires, someone ALREADY worked out the Biot-Savart Law. See the following link for the result: hyperphysics.phy-astr.gsu.edu/Hba... The formula of interest for us is B = mu0*I/(2*Pi*r) where mu0 is magnetic permeability of free space, I is current, and r is distance from the wire carrying the current. B is the magnetic field due to that PARTICULAR wire. To deal with three wires, use a superposition principle and stack magnetic fields on top of each other. Do be aware of direction: remember the right hand rule. RH rule for magnetic fields in vicinity of wires: point thumb in direction of current, curl fingers to show the magnetic field circulation direction. Use this sign convention: + B is up along page, -B is down along page For Wire A: point of interest is r = d_ab/2 or 0.003 m to the right of wire A Point thumb in to the paper and the finger curl indicates that B_A is downward B_A = -mu0*I_A/(pi*d_ab) For Wire B: point of interest is r = d_ab/2 or 0.003 m to the left of wire B Point thumb out of the paper and the finger curl indicates that B_B is downward B_B = -mu0*I_B/(pi*d_ab) For wire C: point of interest is r = d_ab/2 + d_bc or 0.006 m to the left of wire C Point thumb out of the paper and the finger curl indicates that B_C is downward B_C = -mu0*I_C/(2*pi*(d_ab/2 + d_bc)) Add up: Bnet = B_A + B_B + B_C Bnet = -mu0*I_A/(pi*d_ab) - mu0*I_B/(pi*d_ab) - mu0*I_C/(2*pi*(d_ab/2 + d_bc)) Simplify: Bnet = -mu0/pi*(I_A/d_ab + I_B/d_ab + I_C/(d_ab + 2*d_bc)) data: mu0:=4*Pi*10^(-7) Tesla-m/A; I_A:=4 A; I_B:=4 A; I_C:=4 A; d_ab:=0.006 m;d_bc:=0.003 m; Result: Bnet = -6.667 milliTeslas negative sign indicates downward direction.

Q:When it is time to replace wiring in a building?

Some places require a re-wiring of a home if you replace the main service panel and the wiring is old, such as post and wrap or two conductor. In general, unless you have very old wiring, have had a fire, or need to upgrade your power availability in a room, you will not need to replace the wire. And my advice, if you have ANY post and wrap, or cloth insulated two-wire, get it replaced. That stuff is a fire hazard, as the rubber and cloth in those kinds of wires breaks down after decades, and can allow arcing to occur. Which can lead to a house fire.