While electrical boxes have many variations, they all fall into one of two categories: plastic boxes or metal boxes. Sometimes, the choice is clear-cut and obvious, mainly for grounding. Other ...

Box material. Indoor nonmetallic boxes are typically plastic or fiberglass. Cheap PVC boxes like the one shown at far right ...

If the electrical box is made of plastic, as most are these days, carefully fold and push the wires into the box, as you press the switch flat against the face of the box.Secure the switch with ...

Box of electronics (Image credit: Shutterstock). It’s quite common to stash away old electronic devices or store unused batteries. However, plastic bins or storage containers are a no-no.