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What is a Junction Box?

By feiadmin 4 years ago1 Comment
Home  /  General Electrical Questions  /  What is a Junction Box?

A junction box is an enclosure that protects a connection (the junction) of two or more wires carrying electrical current.  This level of protection is needed to prevent fires and to maintain solid, reliable connections that stay tight over many years.  The use of junctions removes the need to run a wire from every outlet or switch back to the main service panel.

When a junction box is used for every electrical connection in a building it is much easier to locate and repair any electrical problems that come up.  When some connections are made without junction boxes, such as inside wall cavities or in hidden ceiling or attic locations, the likelihood future problems increases.   Every electrical connection should be inside a protective box that is easy to find and access.

Junction Boxes are Metal or Plastic

junction box plasticAn electrical junction box can be made of either metal or plastic and they are called by a variety of names.  This is because they come in various shapes and sizes that are used for different purposes.  Boxes like the one above can simply be used to protect the connection of multiple wires and have a flat plate covering it. Electrical boxes like the one on the right are also used for outlets or for wall switches. Other boxes are used for hanging ceiling fixtures and other uses.  Some boxes are made specifically for new construction, and others are made for retrofit work.   There are many types of electrical junction boxes available, and you can see many of them at any home supply store.

Adding a Junction Box

Whether you want a new outlet added to your kitchen, a ceiling fan installed where there is none currently, or a new dedicated circuit added to your garage, a junction box of some kind will be needed.  Although there are some handy homeowners who are competent to do this work themselves, for most people we recommend having a licensed electrician do that type of work for you.  It can be dangerous at the time you are adding it, and it can be dangerous later if it causes an electrical fire.

Just give us a call and then you won’t have to worry.   After more than 40 years of service, Frye Electric is a respected name with a respected reputation.   We’d be glad to help you with any electrical service – residential or commercial.    Please call us today!

 

 

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  • I definitely agree with you that adding a junction box is something that most people will have to rely on an electrician for. Electrical work can be tricky, and you shouldn’t just assume that you can do it all yourself. You may end up wiring something wrong, causing more harm than good in the end.

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