Never assume that any electric wire, no matter what color it has, is safe to touch.
No, you can feed it with a 2 wire Romex + ground. It depends on what is mounted on the ceiling. If it is just a light all you need is 2 wire + ground Romex. However if it is a fan/light and you want to control each one independant of the other you will need to use 3 wire Romex + ground. This is of course if you have 2 seperate switches. You would then connect the red wire to the blue light wire and the black wire to the black fan wire. If you use 2 wire Romex just connect the blue and black fan/light wire to the black wire in the ceiling box.
In an incandescent light bulb the wire that gives off the light is called the Filament.
Some light fixtures do not have a grounding wire. In such cases the two wire going to the light may both be black. You can connect black supply to either black light wire and white supply to the other black wire.
Add a light to switch from a different circuitI think here your concern is that you don't want change the performance of the circuit to which you add the light.so you have to use a relay or a solid state relay to the circuit and a separate power supply to the light in compliance with all the safety rules.
first of all, you need a bulb, a wire, and ONE light bulb. You clip the wire on the battery and touch the wire on the bottom of the light bulb
Light blue is for steering wheel controls or a wire remote control.
Make a circuit with 2 wires a batery and a light bulb and touch wire to medle on light bulb
normally the white wire is but take a test light and a long pice of wire and connect the wire to the battery with one end of it and put the other end on the test light, make sure you dont touch the wire to any medal on the truck, use the test light and test the wires form the bulb socket to see which one lights up, that will give you the ground wire
Take a lightbulb so the bottom touches on end of a battery. Take a wire and touch the battery and the other end to the lightbulb.
Live wire is not to be touched. or Live wire touch not..haha
A small current is flowing through the light. In an insulated screwdriver with a neon tester, you put your thumb on the top and touch the other end on to the wire. It's best to make sure your other hand is behind your back and that you are not touching anything else. A live wire will light the neon. But if the neon does not light, that does not mean the wire is safe to touch. The power must be turned off back at the main switch before anything is touched.
Take a battery, a wire and a little light bulb. Put the wire on the flat part of the battery then put the other end of the wire on the side part of the bottom of the light bulb. Put the end of the light bulb on the top of the battery, dont touch the wire to the top when the light bulb is on it because is either shocks you or doesnt work.
You can use a wire tester to determine if a wire is live. You can also touch the positive wire on the ground wire, if the wire produces a spark it is live.
poor ground wire
To control both the ceiling fan and light from the wall switch, you will need to replace the existing single switch with a double switch. One switch will control the fan, while the other switch will control the light. You will need to ensure that the wiring in the wall box is set up to accommodate the two separate circuits for the fan and light. It's recommended to consult a licensed electrician for this type of rewiring to ensure it's done correctly and safely.
Never assume that any electric wire, no matter what color it has, is safe to touch.