Walking into the kitchen to find the microwave clock dead while the refrigerator light is blazing is a confusing experience. It often feels like a ghost is flipping switches in your breaker panel, but in the trade, we call this “losing a leg.” Your home’s electrical service is delivered via two main 120-volt lines that combine to provide the 240 volts needed for heavy hitters like your dryer and AC unit. If a storm knocks down a limb or a connector fails out at the pole, you lose one of those lines. The result isn’t a total blackout, but rather a weird state where half your circuits work perfectly and the other half are dead as a doornail.

Here is where the physics gets messy and potentially expensive for your appliances. If you try to run a 240-volt appliance like an electric range during this partial outage, the equipment can’t draw the full power it needs. Instead, electricity often tries to complete the circuit by backfeeding through the neutral wire—essentially trying to pull power through a path that wasn’t designed for it. You might notice your living room lamps glowing dimly when you turn on the oven; that’s voltage bleeding over from the working leg to the dead one. It puts strain on your appliance motors and electronics, risking permanent damage or overheating.

Before you pay for a service call, take a look at your meter outside. If the digital display is blank, or if your neighbors are mentioning similar weirdness, this is almost certainly an issue for the utility company rather than a problem inside your walls. The fault is usually at the transformer or the connection point where the service drop meets your house. Call the power company immediately to report a partial outage, and go flip off any double-pole (240v) breakers in your panel to protect your major appliances until full voltage is restored.

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