Let’s say you want to brighten a dark room or replace a flickering light bulb. You purchase a bright 100W light bulb, but when you go to screw the first bulb into your lamp, you notice it has a warning label that says “Maximum 60 Watts.”
“Well,” you think, “What’s the worst that can happen?”
The short answer: a home fire. Even if the higher-watt light bulb is removed before a fire starts, the overloaded current can permanently damage your wiring.
How come? Let’s shed some light on it.