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Most standard residential water heaters, which are typically around 40 gallons and use 240 volts and between 3,500 and 5,500 watts, require a 30-amp, two-pole circuit breaker. For smaller, point-of-use water heaters using 120 volts and between 1,500 and 3,000 watts, a 30-amp breaker is also often adequate. However, some models may have different needs; units that use more watts than average may require a 40-amp breaker, while smaller units might only need a 20-amp breaker. Newer, tankless, or more energy-efficient models can also require a higher amperage. Having the correct breaker size is crucial for safe and efficient operation, so it's best to consult a licensed electrician to determine the specific needs of your water heater.

It’s important to ask an electrician a few questions before you commit to hiring them so you can make an informed decision as a consumer. If you’re getting estimates or considering hiring an electrician, ask them these questions:

• Are you a full-time electrician?

• Are you bonded, licensed, and insured?

• What level of experience do you have as an electrician?

• Can you please share three references?

• Do you do residential or commercial electrical work?

• What kinds of electrical work are you most familiar with?

• Will any subcontractors be performing the work?

• Are permits and inspections required?

• Who is responsible for obtaining permits and inspections?

• What is your schedule?

• Do you offer a guarantee or warranty on your work?

• Will you sign a do-not-exceed clause to keep the job within the budget?

Motion sensors are actually an eco-friendly option and don’t use as much electricity compared to other lighting sources. Motion sensor lights are always on “standby,” which requires a phantom source of power at all times, but for most sensor light models, this is only a small amount of electricity—typically around one watt of power.

Grounding an electrical outlet can take as little as 30 minutes if you only need to replace the outlet or around two hours if you need to add a ground wire. However, more extensive electrical work will take longer, such as hiring an electrician to ground multiple outlets during the same service.