Safety & Hazards

Electrical warning signs you should never ignore

Most electrical fires give some warning first. Knowing which signs mean "call 911 now" and which mean "call an electrician this week" can prevent a fire.

Emergency first: smoke, flames, sparks, a strong burning smell, a downed power line, or someone shocked: get people away and call 911. Call your utility (for example PG&E, SCE or SMUD) about downed lines or damaged service equipment.

Is a warm outlet dangerous?

An outlet or switch that feels warm is not normal. Common causes are a loose connection, a worn receptacle, or too much load. Unplug what is plugged in, stop using that outlet, and have it checked. Do not open the box to tighten wires yourself.

What does a burning smell from an outlet or panel mean?

A hot-plastic or fishy smell can come from overheating insulation or devices. If it is strong or you see smoke, treat it as an emergency. If it is faint and goes away when you turn off a circuit, leave that circuit off and call an electrician.

Other signs to take seriously

  • Buzzing, crackling or sizzling at outlets, switches or the panel.
  • Scorch marks or discoloration on outlets, plugs or the panel cover.
  • A tingle or mild shock from a faucet, appliance or fixture: call an electrician promptly, it can be a grounding problem.
  • Breakers that trip repeatedly or will not reset: see why breakers keep tripping.
  • Lights that dim or flicker across the house: see flickering lights.
  • Cords that get hot, or extension cords used as permanent wiring.

What can I safely do myself?

Unplug devices, turn off the affected circuit at the breaker if you can reach it safely and dry, keep the cover on, and call. Leave anything behind a cover plate or panel cover to a licensed electrician.

Common questions

Is it normal for an outlet to be warm?

No. A warm outlet or switch usually means a loose connection, a failing device or an overload. Stop using it and have it checked.

What should I do if I smell burning from an outlet?

If you see smoke or the smell is strong, leave and call 911. Otherwise, turn off that circuit at the breaker if it is safe to reach, unplug devices, and call an electrician.

General information for California homes under the California Electrical Code (based on the NEC). Local rules and inspectors can vary. Not a substitute for an on-site inspection. Never work inside a panel, at the meter or on live circuits.