Which black wire is neutral and which is switched live.
Stereo audio applications use either black and red, grey and red or white and red RCA connectors; in all three cases, red denotes right. White or purple may also be replaced by black. Some older tape recorders, and equipment like receivers designed to connect to them, use a 5-pin DIN connector to connect left and right for record and playback with a single cable. Adapters between this.
The neutral is white, the hot (live or active) single phase wires are black, and red in the case of a second active. Three-phase lines are red, black, and blue. US DC power: The US National Electrical Code (for both AC and DC) mandates that the grounded neutral conductor of a power system be white or grey.
Your house is set up for a fan with a light on it.(black wire) The fan you purchased seems to have no light.(no black wire) Wire your fan red-red, white-white, green-ground, and cap the black wire. Try the switch after you wire it up. If the fan doesn't come on, first make sure you have power, then wire the red to the black and cap the red.
The color coding of electric wires is unique to the U.S. In the United Kingdom, the black wire is the neutral wire. The red colored wire is the hot or live wire. Sometimes, the ground wire may not be included in the circuit. This color coding is not absolute and the wire must be tested with an electrical tester. Color coding for electrical.
Black and Red Wires. According to NEC, a black or red wire must be used as an ungrounded conductor or hot wire. In fact, any color wire except white, gray or green may be used in conduit to carry ungrounded power. No wire with any of those colors can be used for establishing a ground or neutral connection.
How to Wire a Switch With White, Black and Ground Wires. The hot wire in a 120-volt residential AC circuit usually is coated with black insulation, while the return, or neutral, wire is white. A.
Hold the red and black terminals of your circuit tester to a red and a black wire that appear in the same cable. (Using the diagram above, this would mean either cable 1, 2 or 3. Then turn on the light switch (With all power off to the lighting circuits, there is no power to the switch).