Question

The wire having a black plastic covering is a

• A. live wire
• B. neutral wire
• C. earth wire
• D. none of these

Answer 1

The correct option is B

neutral wire

1. A live wire is one that has a red plastic coating. In an electric circuit, the phase is represented by a red wire.
2. It's the red or bulb wire that can't be connected to another red or bulb wire since it's live. In various varieties of switch legs, red is used.
3. According to the old standard, the neutral wire uses black color. The protective earth or ground current is using green color.
4. Therefore, the wire having a black plastic covering is a neutral wire.

Hence, option B is correct.