RV Electrical Safety Checklist

RV electrical fires cause millions of dollars in damage every year, and most of them are preventable. After 11 years of working on RV electrical systems across Martin County, I've seen every type of failure: melted shore power cords, overloaded panels, corroded connections that sparked, and converters that caught fire because a cooling fan stopped working. Here's the safety checklist I wish every RV owner would follow.

Inspect Your Shore Power Cord

Before every hookup, check your shore power cord for melted prongs, cracked insulation, exposed wire, or burn marks. A damaged cord can cause a fire at the plug connection or at the campground pedestal. Per NEC Article 551, the cord should be in good condition with no visible damage. Replace it immediately if you see any issues. We've seen cords melt at the RV inlet because of a loose connection that created resistance and heat. A new cord costs $50 to $150. A fire costs everything.

Use a Surge Protector

Florida's campground power can be unreliable. Thunderstorms cause power surges. Overloaded campground circuits cause voltage drops. Both can damage your converter, inverter, refrigerator, and other sensitive electronics. A portable surge protector (like Progressive Industries EMS-PT30X or EMS-PT50X) costs $200 to $350 and monitors voltage, protects against surges, and disconnects your RV if power goes out of spec. A hardwired model costs $250 to $450 installed. Either way, it's the cheapest insurance you can buy for your electrical system.

Check Battery Connections Quarterly

Florida's coastal humidity accelerates corrosion on battery terminals. Green or white buildup on terminals creates resistance, which reduces charging efficiency and can cause heat buildup. Every 3 months, disconnect the batteries (negative first), clean the terminals with a baking soda and water solution, dry them, and apply a terminal protector spray. This takes 15 minutes and prevents a long list of electrical problems.

Test Your GFCI Outlets

Your RV should have GFCI-protected outlets in the bathroom, kitchen, and exterior. Press the TEST button monthly to verify they trip properly, then press RESET. A GFCI that doesn't trip is a shock hazard, especially in Florida where water and electricity are often close together. Per NEC Article 551, all receptacles in wet locations must be GFCI protected.

Know Your Circuit Limits

A 30-amp service gives you about 3,600 watts total. A 50-amp service gives you about 12,000 watts. Know what your appliances draw: a rooftop AC is about 1,500 watts, a microwave is 1,000 to 1,500 watts, a water heater on electric is 1,400 watts. On 30-amp, you can't run all three at once. Tripping breakers isn't just inconvenient; it stresses connections and can cause arcing that leads to fires.

Get a Professional Inspection Annually

Even if everything seems to be working fine, an annual electrical inspection catches problems before they become dangerous. We check every connection, measure voltage at the panel, test all breakers, inspect the converter and inverter, and verify grounding is intact. In 11 years, we've found dangerous conditions in rigs where the owner had no idea there was a problem. An ounce of prevention. Call 772-758-0499 to schedule an electrical safety inspection.