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junction box

noun, Electricity
an enclosure that houses electric wires or cables that are joined together and protects the connections.
Origin of junction box
1895-1900 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for junction box
  • When the power goes out, so does your phone after the battery pack in your home junction box goes dead in a few hours.
  • The rest of the system has a garden station, which is a junction box for all the sensors and a place to secure the wiring.
  • It involved a large electrical junction box, or vault, which was suspended from the ceiling.
  • Using a hammer and screwdriver, tap on the center hole of the junction box and remove.
  • Butterfly drawings of each manhole and junction box showing the number of cables and types coming in and out of each conduit.
  • Be sure the downstream tile exits the junction box at the same elevation.
  • Only approximate location of the junction box is shown on the contract drawing, determine the exact location in the field.
British Dictionary definitions for junction box

junction box

an earthed enclosure within which wires or cables can be safely connected
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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junction box in Science
junction box
An enclosure within which electric circuits, such as the electrical wiring for different sections of a building, are connected to other circuits, such as outside power sources. Junction boxes are very common in telecommunications circuitry and are used to protect the connections and provide easy access to them.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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