We often forget how important it can be to call an electrician if a problem arises with a home’s electrical system. In fact, most homeowners are complacent that their wiring system is just fine and needs no care or maintenance. More often than not, the only time a licensed electrician is called to a house when something is going wrong. It’s important to understand how to recognize when you may need to be preemptive about electrical problems and subtle signs that your electrical system needs maintenance or repairs. Keep an eye out for the following issues that could arise, indicating a bigger electrical problem in your home.

If you’re a fan of power strips, that’s not necessarily a problem right away. The problem happens when you start to overload a specific circuit in your home. Attaching a power strip and then packing it full of energy-heavy devices can quickly cause circuit breakers to flip. In addition to that risk, they can quickly become a fire risk when used inappropriately. Opt for power strips with surge protectors and be careful concerning how much you plug into them. If you need more outlet availability in a space, that’s when you need to call a local electrician.

While the rugs themselves aren’t a sign of electrical problems, the wires and cords run under them are. More and more people are adapting older homes to their current needs, leaving exposed cords and cables throughout the house. You don’t need to run them under carpet and rugs. In fact, that can be a tripping hazard. An electrician can quickly run wires and cables through the walls to get the cables out of sight and out of mind.

If you own an older home, you may have noticed how your outlets don’t look quite like outlets in newer homes. For a long time, two prong outlets were the standard. No many appliances use a three prong plug style in order to provide a ground for the electricity. Don’t be someone who just cuts the third prong off of their appliances or bends it back to make it fit in the two prong outlet; upgrade your outlets instead. Properly grounded outlets can reduce the risk of electrical fires and other risks due to electricity.

It’s important to regularly check your home’s main service panel. Regular visual checks and professional checks by an electrician can help to prolong the life of the panel and help avert any problems from improper care. When you visually inspect the panel, check for any signs of problems, including potential rust. If your panel is rusting, it’s time to have an electrician install a new one for safety and performance.

If you’ve ever turned on a light switch and found that the plate was warm to the touch, then you should call an electrician. Points where power is utilized in the wall should never be warm, and definitely not hot. It’s a sign of a bigger electrical problem that could be a safety hazard.

You only need to type a few words into a search engine to pull up numerous DIY guides for repairing and replacing electrical lighting outlets in your home. Just grab a screwdriver, pliers, and wire cutters and you’re set.

But hold on—do you really know what you’re doing? These DIY guides can be notoriously sketchy, and some depend on you knowing far more about electrical repair than you probably do. Because of the risk of electrical shock and bad wiring that can lead to fires, you should leave the outlet repairs to trained electricians. Outlet shorts and faults are a common cause for household fires (the Electrical Safety Foundation estimates electrical troubles account for 55,000 fires a year), so you should never take such chances.