1. Home

Discuss in my forum

Junction Box

By

Definition: Junction boxes are metal or plastic, measure 2 1/2 inches or 3 1/2 inches deep and it's where wires go to live when they are joined together. Boxes that measure 2 x 3 and 2 1/2 inches deep generally contain 3 wires. Boxes that measure 2 x 3 and 3 1/2 inches deep are made for five wires.

Secure a junction box to a strong structural member such as a stud or joist if the box will be used to support a light fixture. Other types of junction boxes have wings that fit inside a cut-out drywall hole, but they will not support a light fixture.

Use a cable clamp to secure ROMEX wiring that comes into the box, and cap wires inside the box with wire nuts. If you have difficulty twisting the wires together, use a needle-nose pliers to twist black to black and white to white.

At the time of writing, Elizabeth Weintraub, DRE # 00697006, is a Broker-Associate at Lyon Real Estate in Sacramento, California.

Related Video
Change a Litter Box
How to Buy a Vacuum
  1. About.com
  2. Home
  3. Home Buying / Selling
  4. Market Facts & Trends
  5. Glossary
  6. Glossary I, J & K
  7. Junction Box - What is a Junction Box - Installing Electrical Junction Boxes

©2014 About.com. All rights reserved.