By [AUTHOR NAME, TITLE], Kelley Electrical Contracting. Published 2026-10-16. Last reviewed [DATE]. Educational information, not a substitute for an on-site inspection.
Do
Test GFCI and AFCI protection regularly using the TEST button.
Replace frayed or damaged cords and plugs.
Use LED bulbs that match the fixture's wattage rating.
Keep space heaters, air fryers and other high-draw appliances on their own outlet, plugged directly into the wall.
Label your panel so you can shut off the right circuit fast.
Have older homes inspected, particularly if you see flickering, warm outlets or frequent tripping.
Hire a licensed electrician for panel, service and new circuit work.
Call (559) 940-1939Questions? Talk to a licensed electrician.
Don't
Don't plug a space heater or other high-load device into a power strip or extension cord.
Don't run cords under carpets or through doorways where they can be pinched.
Don't use extension cords as permanent wiring.
Don't force a plug into an outlet that does not fit.
Don't use electrical devices near water or with wet hands.
Don't ignore a breaker that keeps tripping or an outlet that feels warm.
Don't remove the cover from your service panel or work on live wiring yourself.
Don't use a bigger breaker to stop nuisance tripping. The wire is sized for the breaker.
Call (559) 940-1939Questions? Talk to a licensed electrician.
Frequently asked questions
How often should I test GFCI outlets?
Monthly is the common recommendation.
Is it safe to leave things plugged in?
Most devices are fine, but heat-producing appliances should be unplugged when not in use, and damaged cords replaced.
When should I get an electrical inspection?
When buying an older home, after major remodeling, before adding solar, battery or an EV charger, or if you notice warning signs.
Call (559) 940-1939Questions? Talk to a licensed electrician.
Sources and further reading
Need an electrician?
Licensed California electrical contractor, license #1111378. Serving Fresno and Madera.