Heat or smoke near outlets, switches, wiring or the electrical panel.
Discoloration around a receptacle or switch can show that overheating began before smoke became visible. If there is active fire, heavy smoke or immediate danger, move to safety and call 911 first.
An acrid plastic or fish-like odor can come from insulation or an electrical component overheating out of sight. If there is active fire, heavy smoke or immediate danger, move to safety and call 911 first.
Smoke near service equipment can involve high-current connections that should not be approached or opened. If the correct breaker can be reached safely, switch it off and leave the damaged equipment untouched.
