Usually, in a 12 VDC system, the red is the positive lead and the black is the negative lead - but to be sure, it's best to use a multimeter or a volt meter.
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.
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.
To answer this question fully the type of appliance has to be stated and its voltage.
Should be about 120 VAC.
If wired correctly the red wire will be hot, but any wire can be hot regardless of colour if done incorrectly.
Depending on the configuration of the cord cap, the green wire is ground, the white wire is the neutral and red and black wires are the 220 volt source.
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.
black
The colour red designates that the wire is used as a live wire. The neutral wire is identified as white in colour.
In residential wiring the white wire is neutral on the 120 volt circuits. On a 3way circuit the red is the traveler and the white is neutral. On a 240 volt 3 wire connection the white & black are hot. On a 240 volt 4 wire connection the black and red are hot and the white is neutral.
No, internal PC wiring colors do not correspond to the standard AC wiring colors. Computer power supplies provide direct current to the computer and peripherals. When using direct current, the black wire is the ground wire. The red wire to the peripheral supply cables are 5 volt, and the yellow wire is 12 volt. Some SATA power connectors have an orange wire that is 3.3 volt.
In the US of A, it's supposed to be black.
It is the ground wire for the fuel pump. The Red wire is the power wire for the pump. the dark blue is the signal wire for the gauge and the black is the ground for the gauge.
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.
To answer this question fully the type of appliance has to be stated and its voltage.
Should be about 120 VAC.
If wired correctly the red wire will be hot, but any wire can be hot regardless of colour if done incorrectly.