The red wire is positive. The black wire is negative. The white wire (if present) is ground (sometimes called neutral in DC). If both wires are black but one has a white stripe, the striped wire is negative, while the plain black wire is positive.
If both wires are black but one has a white stripe, the striped wire is negative, while the plain black wire is positive.
If both wires are black but one has a white stripe, the striped wire is negative, while the plain black wire is positive.
The black wire is a phase 1 “hot” wire, which means it’s a positive or live wire. This wire usually runs to the electrical outlet from the switch. The red wire is a phase 2 “hot” wire, which means it’s also a live or positive wire (but the black is the primary positive wire). The blue wire (if present) is a phase 3 “hot” wire. The white wire is neutral. Neutral is distinct from ground in AC wiring. [4] X Research source The green wire (if present) is the ground wire.
The neutral wire is identified by a white stripe, ribbing or white insulation. The hot (live) wire has no ribbing or stripe; it may have black or red insulation. If the cord has a green wire (rare), it’s a ground wire.
The smooth wire is the positive wire.
The number is the voltage reading. The + indicates positive current. The – indicates negative current.
