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  • Average homeowner rating star icon4.5
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  • Verified reviews icon103
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*The Angi rating for Electrical Service companies in Herculaneum, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

*The HomeAdvisor rating for Electrical Service companies in Herculaneum, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

Last update on August 18, 2025

Electrical questions, answered by experts

To fix a tripped light switch, locate your home's electrical panel and identify the tripped circuit breaker. It will be in the "off" or neutral position. Flip the breaker entirely to the "off" position, then switch it back to the "on" position. If the breaker trips again immediately, there may be a short circuit or overload in the system, requiring further investigation. If the switch still doesn't work after resetting the breaker, check for loose wires or faulty components in the switch itself. It is always best to consult a licensed electrician for persistent issues and when in doubt.

Yes, a bad switch can cause other outlets not to work. If the switch is part of a circuit that controls multiple outlets, a fault in the switch can disrupt the entire circuit. It can happen if the switch is wired incorrectly, has a loose connection, or is damaged. Fixing or replacing the faulty switch can often restore power to the affected outlets

You should never unplug or touch a buzzing outlet. If there are appliances plugged in that are causing the buzzing, wait until the appliance is turned off (or turn it off yourself) and then unplug it from the outlet. Test the outlet by plugging in something that won’t use much power—a small lamp works well. If the outlet still buzzes, have a pro investigate why.

Yes, you must use an extension cord specifically rated for outdoor use to power outdoor lights, such as Christmas lights. Extension cords intended for indoor use lack the protective properties to withstand exposure to outdoor elements. To safely hang and power lights outside your house or in your yard, always connect them to an outdoor power source using an outdoor-rated extension cord.

The cost of fixing faulty wiring depends on the type of repair required. Replacing an electrical service line, for example, can cost up to $500. Rewiring an entire house will cost at least several thousand dollars. Replacing old wiring like knob and tube wiring will be even more expensive, but fortunately that kind of outdated wiring is fairly rare. Always get an estimate from a reliable electrician to learn the cost details. 

The Herculaneum, MO homeowners’ guide to electrical services

From average costs to expert advice, get all the answers you need to get your job done.

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