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  • Verified reviews icon22
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Find Electricians in Jefferson


Avatar for JWM Construction

JWM Construction

1606 Elm St
4.00(
3
)

JWM Construction

1606 Elm St
4.00(
3
)
48 local quotes requested

Over 10 years in both commercial and residential construction, we can handle any job, big or small. From new construction to remodeling, we can help. Quality, customer satisfaction, and safety are our top priorities.

"The work was excellent. Jessie and his crew were very friendly and professional. They kept us informed of the work progress and asked Roger his opinion on the work being done.  "

Roger O on April 2025

Over 10 years in both commercial and residential construction, we can handle any job, big or small. From new construction to remodeling, we can help. Quality, customer satisfaction, and safety are our top priorities.

"The work was excellent. Jessie and his crew were very friendly and professional. They kept us informed of the work progress and asked Roger his opinion on the work being done.  "

Roger O on April 2025



Avatar for BH Mechanical

BH Mechanical

2504 Chicago Ave
No reviews yet

BH Mechanical

2504 Chicago Ave
No reviews yet
2 years of experience

Master level technician. I work on heavy equipment. My specialty is electrical and welding. I am a certified welder. I have certifications in high voltage. I work on everything from big cranes to passenger. I work on passenger vehicles, bobcats, forklifts, and manlifts. I also work on appliances, gaming consoles, TV's etc. I am a mobile mechanic with a service truck. I also do home improvement projects.

Master level technician. I work on heavy equipment. My specialty is electrical and welding. I am a certified welder. I have certifications in high voltage. I work on everything from big cranes to passenger. I work on passenger vehicles, bobcats, forklifts, and manlifts. I also work on appliances, gaming consoles, TV's etc. I am a mobile mechanic with a service truck. I also do home improvement projects.


Zed Construction

33rd St
No reviews yet

Zed Construction

33rd St
No reviews yet
6 years of experience

general construction, concrete finishing and stamping, installing, demo, large or small we get dirty doing them all. we do it all in one call making your dream home and improvements to give you the memoiys that make you completely love your home

general construction, concrete finishing and stamping, installing, demo, large or small we get dirty doing them all. we do it all in one call making your dream home and improvements to give you the memoiys that make you completely love your home






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Electrical questions, answered by experts

The American Wire Gauge system calculates wire size diameters using the complicated formula D(AWG)=.005·92((36-AWG)/39) inch. A simpler rule of thumb is that every six-gauge decrease doubles the wire diameter, and every three-gauge decrease doubles the wire’s cross-sectional area. On the other hand, wavenumbers are typically measured in reciprocal meters (1/m or m−1) or reciprocal centimeters (1/cm or cm−1).

A 60W LED bulb is likely labeled as “60W replacement” on the package—that’s because it provides about the same light output as a 60W incandescent bulb. In reality, it likely uses less energy—usually 15 watts or less. If that’s the case, then it’s perfectly fine to put a 60W LED bulb in a 40W socket. Your best bet is to read the package carefully. It will tell you the LED bulb’s actual wattage, and as long as it’s lower than the fixture, the bulb will be safe to use.

There are many signs it is time to replace an electrical panel, starting with flickering lights. Other tell-tale signals include overheating appliances, light fixtures that cause an electric shock, hissing or crackling from the breaker box, burned or blackened spots near the breaker box, and breakers that trip whenever activating power-hungry appliances like microwaves.

You can determine whether you have a double-pole switch by examining its wiring. Unlike single-pole switches, which have two brass-colored terminals, double-pole switches feature four. These switches are typically only found near high-powered appliances such as electric furnaces or water heaters. If you’re unsure what type of switch you have, contact a local electrician to confirm.

You should never use a plug with burn marks because it can cause a fire or even an electrical shock. The burn marks could be caused by a dangerous underlying electrical problem, so it’s important to call a qualified electrician right away. 

The Jefferson, SD homeowners’ guide to electrical services

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