electrical arcing will cause the wire to blacken (the black is carbon buildup from the arc). The copper may also react to the air, salt, etc. similar to pennies and darken.
By earth wire I am assuming you mean the bare wire and that a black and white wire are connected to the light. If when you connect the earth wire and breaker trips then there is a short between black and earth. It could be a bad ground connection, an internal short in the light fixture where black wire "hot" is connected to metal on the fixture through a nick in wire.
The red wire typically goes to L2, while the black wire goes to L1. The earth wire should be connected to the earth terminal or grounding screw. Make sure to consult the wiring diagram or a professional electrician to ensure the correct and safe connection.
Connect the black wire to the single switch hole, the brown wire to one of the holes on the double switch, and the gray wire to the other hole on the double switch. The earth wire should be connected to the grounding point on the light switch. Make sure to follow proper safety procedures and consult a professional if you are unsure.
The significance of the red, black, and green wires in a three-pin plug typically corresponds to their functionality. The red wire is usually the live wire, the black wire is the neutral wire, and the green wire is the earth wire. These colors help to identify and properly connect the wires for safe and correct electrical wiring.
In the US older 2-conductor house wire has a white-insulated and a black-insulated wire. The white wire is the neutral and the black is the hot wire. Newer house wire has a third bare copper wire to serve as the ground wire. Insulated ground wire has a green jacketing on it. Red wires are for switch legs. You want to be sure that whomever did the wiring didn't flip the colors around. You can do this by checking the fuse or breaker box - the white or neutral wires should all run to the multi-neutral ground bus bar and the black or hot wires should each go to their respective circuit breakers or fuse sockets. On your switches and recepticals, the gold screw is for the black, or hot wire, and the silver screw is for the neutral. The green screw would be for the ground wire. Mostly, use a qualified electrician to do any work unless you are quite handy, have all necessary tools and fully aware of all safety precautions and code requirements that may exist where you live.
yes all u need is 12volt continuous power wire. usually yellow 4 stereo memory,12volt accessory wire, [supplies power when ignition turned on,usually red] and a earth wire [black] or u may get earth from stereo mounted 2 metal frame
By earth wire I am assuming you mean the bare wire and that a black and white wire are connected to the light. If when you connect the earth wire and breaker trips then there is a short between black and earth. It could be a bad ground connection, an internal short in the light fixture where black wire "hot" is connected to metal on the fixture through a nick in wire.
The red wire typically goes to L2, while the black wire goes to L1. The earth wire should be connected to the earth terminal or grounding screw. Make sure to consult the wiring diagram or a professional electrician to ensure the correct and safe connection.
When both wires are black, you can identify the hot wire using a multimeter or a voltage tester. First, ensure the power is turned off at the breaker. Then, turn the power back on and carefully test each wire with the voltage tester; the wire that shows a voltage reading is the hot wire. Alternatively, if you have access to a ground wire, the black wire connected to the ground can be identified as the hot wire, while the other is typically neutral. Always exercise caution and consider consulting a professional if unsure.
always think of any supply system so : RED = MOST POSITIVE BLACK = MOST NEGATIVE in a telecom system the -48V supply is refferenced to ground and earth, so the supply wire is NEGATIVE, this means a DC supply most positive signal the RED wire, go to EARTH = ZERO, the BLACK wire is the MOST negative, so in this case it is -48V
Connect the black wire to the single switch hole, the brown wire to one of the holes on the double switch, and the gray wire to the other hole on the double switch. The earth wire should be connected to the grounding point on the light switch. Make sure to follow proper safety procedures and consult a professional if you are unsure.
Current flows through a wire when a light switch is turned on.
the two white wires. one is for lambda heater.along with the grey wire.the other white wire is lambda itself it gets its earth from the exhaust. and the black wire is the signal wire
The significance of the red, black, and green wires in a three-pin plug typically corresponds to their functionality. The red wire is usually the live wire, the black wire is the neutral wire, and the green wire is the earth wire. These colors help to identify and properly connect the wires for safe and correct electrical wiring.
red = phase, black = neutral, green = earth
In the US older 2-conductor house wire has a white-insulated and a black-insulated wire. The white wire is the neutral and the black is the hot wire. Newer house wire has a third bare copper wire to serve as the ground wire. Insulated ground wire has a green jacketing on it. Red wires are for switch legs. You want to be sure that whomever did the wiring didn't flip the colors around. You can do this by checking the fuse or breaker box - the white or neutral wires should all run to the multi-neutral ground bus bar and the black or hot wires should each go to their respective circuit breakers or fuse sockets. On your switches and recepticals, the gold screw is for the black, or hot wire, and the silver screw is for the neutral. The green screw would be for the ground wire. Mostly, use a qualified electrician to do any work unless you are quite handy, have all necessary tools and fully aware of all safety precautions and code requirements that may exist where you live.
The three wires in a plug are typically called live, neutral, and earth wires. The live wire carries the current to the appliance, the neutral wire completes the circuit and carries the current back, and the earth wire is a safety feature to prevent electric shocks.