A junction box is a container used to enclose electrical connections (junctions). Use with the [electrical] tag. Use with [wiring] if your questions involves wires.

When you need to connect two wires together, that is called a junction. By code, all junctions must be made within a junction box. This protects the junction and contains any electrical arcing.

The most common use for a junction box is to install a or .

Reference:

http://en.wikipedia.org/wiki/Junction_box

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