Circuit breakers, despite any techy magic happening beneath the surface, should be the most predictable things in the world.

When a breaker trips (shuts off), it’s usually because too many things were running on one circuit at the same time and it got overloaded. So if you’re running one or more high-amperage appliances ...

Q: I went to use my hairdryer in the bathroom, but I discovered some of the outlets have stopped working. My GFCI test button won’t push in when I try to reset it, but nothing has tripped in the ...