Q:

Is the black electrical wire positive or negative?

A:

Quick Answer

The black wire is used in all electric circuits and is always the "hot" or live wire. It usually runs from the switch to the electrical load.

Know More

Full Answer

Treat all wires with caution, because any wire can carry small currents of electricity at times. Knowing the colors of wires is part of safely working with electricity. Red is a secondary live wire; green is a ground wire; yellow or blue also carries power; white and gray are neutral wires. This code is used in all electric systems in the United States. Anything built before the 1940s could use a different color code since the coding of all electronics wasn't yet codified.

Learn more about Electrical
Sources:

Related Questions

  • Q:

    Is solid wire better than stranded wire?

    A:

    Choosing between stranded and solid wire depends on the amount of movement required in each wire. Stranded wire is more flexible than solid wire, which makes it a better choice in situations where a wire needs to move around frequently.

    Full Answer >
    Filed Under:
  • Q:

    Is the black wire live or neutral?

    A:

    In the Unites States, the black wire is the live wire, while the white wire is the neutral wire and the copper or green wire is the earthed wire, which is also called the ground wire. The color coding of electric wires is unique to the U.S.

    Full Answer >
    Filed Under:
  • Q:

    How do you wire a plug?

    A:

    To wire a plug, strip the wires with wire strippers, thread them onto their respective terminals, and fasten them with terminal screws. Insert the cover, and test the plug. You need wire strippers, a craft knife, a screw driver, an electric cable and a plug to complete this task.

    Full Answer >
    Filed Under:
  • Q:

    How do you wire a subpanel?

    A:

    To wire a subpanel, first consult with an inspector to ensure the panel does not overload, then turn off the electricity, mount the subpanel box, clamp and pull the wires to the subpanel and connect the new circuits. Use a larger box than necessary so that future circuits can be added.

    Full Answer >
    Filed Under:

Explore