Mistake: Exposed combustible material – Electrical boxes must be flush to the wall surface if the wall surface is a combustible material.

Boxes recessed behind combustible materials like wood present a fire hazard because the wood is left exposed to potential heat and sparks.

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Solution: Add a box extension – The fix is simply to install a metal or plastic box extension.

If you use a metal box extension on a plastic box, connect the metal extension to the ground wire in the box using a grounding clip and a short piece of wire.

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There are an additional 5 mistake in the original article at Home Handyman – Check them out too.

All the images came from the original article.

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