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Electrical Wire and Cable

What Size Light Bulb Is Safe For Fixtures?

Light Fixtures Light Sockets Lamps and Light Bulbs: Guide for Selecting the Right Size Light Bulb, CAUTION: Installing the Wrong Size Light Bulb Can be Dangerous!

The Wrong Size Light Bulb Can Be Dangerous!
Electrical Question #1: I am replacing Light Bulbs in Light Fixture Lamp Sockets.

Background: Ed, a Homeowner from Amherst, Massachusetts.

Electrical Question #2: I’m wondering if halogen bulbs are OK in our light fixture.

This electrical wiring question came from Allie, a Homeowner in Charlotte, North Carolina.

Dave’s Reply:
Thanks for your home electrical question Ed and Allie.

Light Fixtures, Lamps, Light Sockets and Light Bulbs

Guide for Selecting the Right Size Light Bulb

More about Light Bulbs and Light Fixtures

Electrical Safety

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FAQs Frequently Asked Questions and Comments

13 Responses to “What Size Light Bulb Is Safe For Fixtures?”
  1. Christian says:

    My wife bought a 660W 250V porcelain lamp holder to replace one of the light fixture in our hallway. When I attempted to put it in, the black wire started sparking when I turned the electric back on. Any idea what might be the issue? There was a similar fixture there before so not sure what is causing the outage.

    • Dave Rongey says:

      Hi Christian,
      I would suspect that the wiring may be loose at the connections to the light fixture. Sparks may result if the wires are loose and the light is turned on.
      Be Safe,

  2. jane brown says:

    I just hung a Tiffany tulip style shade from an existing socket where a fan/light combo used to be. I want to use a hundred watt round clear bulb. The bulb I want to purchase says 125V. House is pretty old. Electrical just average. Will it be safe to use?

    • Dave Rongey says:

      Hi Jane,
      The watt limitation is typically printed on the light socket. Plastic light sockets will have a lower watt limitation than a metal socket. Also check the Tiffany shade for additional lamp type or size limitations. Standard lamps will show a rating anywhere from 110 to 130 volts, so the 125 volt rating is fine.
      Enjoy your light!


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