In the hot tub junction control box there should be three terminals. The terminal block might say line voltage. This is where the incoming "hot" wires connect. The red and black wires will probably be for the 240 volt pump motor and one of the two "hot" wires and the white wire will be used for the controls that control the pump.
To connect a timer to a white and black house wire with red, black, and white wires, typically the black wire from the timer connects to the black house wire, the white wire from the timer connects to the white house wire, and the red wire from the timer connects to the red wire from the house. It's important to follow the manufacturer's instructions and turn off the power before installation.
Red, white, and black are standard for a three-way switch (you have two switches that control the same fixture). You should also have a ground wire (copper, unsheathed). The black and red are negative, while the white is positive. It works pretty simply. When the switch is up, the black and white are linked, creating a circuit. When it is down, the red and white are linked. If both switches agree (both are red/white or both are black/white), then the circuit is completed and power flows.
You have a 3 way switch. Your black wire is the hot wire. Your green wire is the ground wire. Your red and white wires go to the light and other switch. You should have gotten a wiring diagram with your switch.
Typically, in the US, the blue wire of a ceiling fan is for the light kit, the red wire is for the fan motor's high speed, the green wire is for the ground, and the white wire is for the neutral connection. You would connect the blue wire to the black wire of the ceiling, the red wire to the red wire of the ceiling (if there is one), the green wire to the bare copper wire (ground), and the white wire to the white wire.
It seems like you are describing the Red, Black, White and Ground in your electric panel. There is 240 VAC between Black and Red and 120 VAC between Black and White and 120 VAC between Red and White. The electric panel has two busses that supply 120 VAC on alternating breakers in your panel. Essentially, the Red turns into "black" in the panel for all practical purposes. If you have a 240 VAC circuit it essentially takes up to two vertical positions in your electric panel.
The red wire typically goes to the black wire.
The red wire typically connects to the black wire.
To connect a timer to a white and black house wire with red, black, and white wires, typically the black wire from the timer connects to the black house wire, the white wire from the timer connects to the white house wire, and the red wire from the timer connects to the red wire from the house. It's important to follow the manufacturer's instructions and turn off the power before installation.
Red, white, and black are standard for a three-way switch (you have two switches that control the same fixture). You should also have a ground wire (copper, unsheathed). The black and red are negative, while the white is positive. It works pretty simply. When the switch is up, the black and white are linked, creating a circuit. When it is down, the red and white are linked. If both switches agree (both are red/white or both are black/white), then the circuit is completed and power flows.
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the thermostat has a black(line) wire to it, and a red wire going to it. the red wire then connects to the neutral wire. the black and red are like a leg switch.
You have a 3 way switch. Your black wire is the hot wire. Your green wire is the ground wire. Your red and white wires go to the light and other switch. You should have gotten a wiring diagram with your switch.
If this is a home wiring question and the wires are black and white then black is Hot and white is Neutral. If you also have a red wire, it is the other hot wire, and either the black or the red wire to the white one would be 120 volts, and red to black would be 240 volts.
Typically, in the US, the blue wire of a ceiling fan is for the light kit, the red wire is for the fan motor's high speed, the green wire is for the ground, and the white wire is for the neutral connection. You would connect the blue wire to the black wire of the ceiling, the red wire to the red wire of the ceiling (if there is one), the green wire to the bare copper wire (ground), and the white wire to the white wire.
The ignition wire in a Nissan 350z is black and red. The starter wire is white/red and the second starter wire is white/green.
The proper sequence for connecting the black, white, and red wires in an electrical circuit is to connect the black wire to the live or hot terminal, the white wire to the neutral terminal, and the red wire to the switched or load terminal.
It seems like you are describing the Red, Black, White and Ground in your electric panel. There is 240 VAC between Black and Red and 120 VAC between Black and White and 120 VAC between Red and White. The electric panel has two busses that supply 120 VAC on alternating breakers in your panel. Essentially, the Red turns into "black" in the panel for all practical purposes. If you have a 240 VAC circuit it essentially takes up to two vertical positions in your electric panel.