The Spruce on MSNLíon na míonna: 3
When to Use a Plastic or Metal Electrical Box
So, metallic-sheathed cable must contact a metallic box for proper grounding. Strong Cannot melt Groundable More expensive ...
You can wire a whole home using only non- metallic boxes, but metal boxes ... instead of electrical boxes. Low-voltage wiring doesn’t necessarily need an enclosed box. In fact, you often don ...