Electricians get called into all kinds of interesting situations — from straightforward repairs to full-on electrical mysteries. Troubleshooting pole lights falls squarely in the latter category: tricky to diagnose, but incredibly satisfying to solve.
We recently got a call from a commercial property owner dealing with a nuisance tripping breaker in their parking lot. The lot had been upgraded from older, power-hungry metal halide fixtures to modern LED lights — a smart move that should have made the electrical system work less hard, not more. So why was the breaker giving up?
Following the Evidence
A tripping breaker usually points to one of two culprits: a dead short, or a sustained overcurrent. Since LEDs draw a fraction of the power that metal halide fixtures do, a simple overload was off the table. That left damaged wiring and a short circuit as the prime suspect.
When we couldn’t replicate the trip in the field, we went old-school: open it up and look. We popped the hand hole cover on the first pole in the lot — and hit the jackpot immediately. Mangled wire, stripped insulation, and the unmistakable smell of burnt conductor.
The culprit? A squirrel.
The Usual Suspect
Rodents — squirrels in particular — love the hollow interior of light poles. They’re dry, sheltered, and just warm enough to be inviting. The problem is they also love to chew, and electrical insulation is apparently irresistible. What you’re left with is bare copper conductors just waiting to find ground and pop that breaker.
The good news? No squirrel carcass — meaning our furry saboteur had the good sense to do his chewing during daylight hours, before the lights powered up. Lucky little guy.
The Fix — and the Prevention
The repair was straightforward: pull fresh wire from the top of the pole down to the hand hole, make clean connections, and test. Breaker held. Problem solved.
But we didn’t stop there. To make sure this wouldn’t happen again, we installed pole caps on the tops of the fixtures — simple covers that block critters from getting inside in the first place. No access, no nesting, no chewed wire.
This Is Why We Love This Work
This is exactly the kind of project that gets us fired up. It’s not just about fixing what’s broken — it’s about understanding why it broke and making sure it doesn’t happen again. Sending a customer back to a fully lit, protected parking lot knowing the root cause has been addressed? That’s a great day on the job.
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