Q:How do they differ from residential wiring?

Commercial and industrial wiring make extensive use of conduit, cable trays/ This entails explosion-proof or flame-proof fittings, along with the seals and other conduit fittings. Residential wiring, in most cases make extensive use of romex cables without any conduit. Other than these major and a few minor differences, the wiring is actually the same. This is the installation of cables/wires from the circuit breakers to the users. TexMav

Q:I am replacing a 2 wire circuit for a fan/light combo with a 3 wire fan/light combo switch. I ran a new 12/2 w/grnd to the switch box. I ran a 12/3 w/grnd to the ceiling box for the fan. I have a ceiling fan and light control switch that control light and fan separately. I can't figure out which wires go to what.

To make that easy to understand we take fan as light and to turn on the fan you need one neutral wire one hot wire and one ground wire.Switch is a cut circuit device which will install in hot wire(simple circuit).If already it's wired you will have 4 connected wires in the light box which one of the hot wires and neutrals are directly to the light and separate from other wires,(BLACK AND WHITE) so connect them to the fan wires as same color and if you see green wire in fan connect it to the ground(COPPER). Now 3-way wiring is using 2 control for fan. 3-way switch has 3 entry 2on top and 1 in bottom (COMMON) SHOT DOWN POWER FIRST then: 1- connect main hot to first switch (TOP LEFT) 2-connect free hot wire 3/12(RED)to the (COMMON) 3- connect BLACK hot to (TOP RIGHT) 4-connect neutral to neutral and ground to ground 5-send 12/3 after connecting as above to the fan box. 6-IN other switch with another 3/12 wire connect BLACK to (TOP LEFT) 7-connect RED to (TOP RIGHT) 8-Connect WHITE to (COMMON)and by wire tape put a black sign to white wire as return HOT. 9-Send that wire to fan box . A-NOW in fan box connect RED TO RED and BLACK TO BLACK . B-connect NEUTRAL from first switch to the fan neutral wire C-connect all the ground to gather. D-connect WHITE wire from second switch to the BLACK wire of the fan and put the black tape on it to separate that from neutral wire. Before close the switches turn on power and try both switch to make sure one will turn off and another will turn on and opposite.

Q:hi to all, pls try to help me,, to get the kawasaki zxr250 cdi color wiring diagram!?i hope that you help me..i really hope that i use my kawasaki big bike,.....thank you !!!!!rose,,

Nothing free online for that. Just go to the nearest dealer and get the book. Or book store get the manual there.

Q:Ceiling fan has a black wire, white wire, green wire and also a black and white wire.

For the best answers, search on this site https://shorturl.im/avdD1 After reading all of these scary answers, this is from an electrician. Red and black are hot, usally to a double pole breaker. White is common, it completes the circuit. Green is the ground. If the fan has a light, red and black together, connected to the incoming black wire. The white goes to white and green is the ground. The ground is usually attached to a green screw. In this case there will be a single pole breaker. If there is no light, cap the red wire and tuck it inside the light.

Q:I have a Speedaire 4B234 its currently wire to 120V but keep flipping the breaker and I have a 240V in the garage so I want to wire it to that. I have 2 blue wires, 2 red wire, and 2 green wires but the green wires are hooked together. One blue wire goes to Line and the other to Motor and same thing with the red wires.

Go to any store that sells them and look at the manual. Better still, Google for the manual.

Q:What is the wiring for one headlight on a fourwheeler that has high and low beams.

one terminal on the bulb is common to both low and high beam. that will be the ground. the other two are the hi and low beam supply .take a test light and see which two of the three wires has power to ground . once the two hot wires are identified , the third wire will go to the common terminal on the head light bulb. take the other two and see which is hi and low by switching the switch and connect to the bulb . test the light before reinstalling it if there is no power at the wires than the problem is somewhere else

Q:I recently instaled a Alpine in dash dvd player, the only wire i have left is the safety wire that needs to go to the parking brake wires. Where can the parking brake wires be found on a Ford Explorer and which 1 shound it go to ??? Thanks in advance!

We'll if its an Alpine, there is going to be 2 brake wires. You cant jsut simply ground this wire to make the picture work. As soon as you restart the vehicle, the system will know, and you wont be able to watch video anymore. One wire is yellow/blue and one is yellow/blk. The one that is yel/blk should go to your brake wire. This is the one that is on your footbrake. You can test to see what wire this would hook up to. Just go to the brake pedal switch and test the maybe 4 wires are there. All this wire needs to see is 12v when you press the brake. The yel/blu wire is going to the only wire that goes to your parking brake. You'll see it, its the only one that is connected to the metal of the lever. All this wire needs to see is ground. There is a sequence that these wires needs to see. Usually its your foot brake on (hold it), then toggle your parking brake on, then off, then back on again, and then release your footbrake. This will make your screen view video and access extra settings. FYI, you can also buy a bypass module for this on OKorder. It will only cost maybe $20 or so. It will tell you how to wire it up to this relay so that everytime you turn your car on, it will automatically do the sequence for you. Hope this helps!

Q:If I have wired my 20 amp kitchen receptacles with 12/2 wire which only has a red, black, and ground wire, do I use the red wire for a neutral and the black as a hot?

You deffinatly need to put white tape on that red wire and to make it known as being a neutral.... The black wire is always going to be a hot in receptacle circuits...

Q:is there a way to wire an exit sign to a plug for an outlet receptacle?

Fire codes in most places require it to be hardwired in an emergency circuit or to have a battery back up good for four hours.

Q:How doI wire a ceiling chain light to wall switch? I want to stop using the chain to turn the light on and off. I hane already installed the wall switch and the wiring in the box but not sure how to connect the wiring in the box to the ceiling light wiring.

Basically, yes. The wiring you placed is caused a switch loop. if you connect the black feeder wire to the white of the switch, and the switch is turned on, then the black wire of the switch loop will be hot. Connect this to one side of the light fixture and the white of the feeder to the other side.