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Technician Engineers Group
3.7(
15
)
Generator - Install - For Business

Serving Whiteford, MD and surrounding areas

Approved

In business since 1996

Offers commercial services

Customers say: Quick response

"Anthony and his team do expert electrical work of all kinds. We are a 145 year old non-profit organization with buildings and grounds, and have contracted with Technician Engineers Group (TEG) on two large projects (and several small ones) over the last 15 years. One project rewired a large 125 year old building listed on the National Register of Historic Places, and one installed an extensive outdoor lighting system. In these two unusual situations TEG worked closely with us to find innovative solutions to our unique needs. We are very pleased with the results, enjoyed their can-do approach, and highly recommend this company for any electrical challenge. We found TEG reliable, honest, on time, and all the work was completed ahead of schedule."
4 neighbors recently requested a quote
Recommended by53%of homeowners
Avatar for Callahan Electric
Callahan Electric
4.9(
32
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Whiteford, MD and surrounding areas

In business since 1999

Free estimates

"Callahan worked me in during a busy week before the 4th even though it was a cold call. I did not know him.. The electrician was exactly on time at 8AM and he wore a mask. He did a perfect job, and went out of his way to make the wire out of site as it was installed across my garage.. Even though it took a little longer than anticipated, he still charged me the quoted price.. I will definitely call him again for all my electrical work."
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+14

Recommended by100%of homeowners
CAP Electrical
4.2(
146
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Whiteford, MD and surrounding areas

In business since 2002

Free estimates

Credit card accepted

"I highly recommend CAP Electrical for all of your electrical needs! Not only do they do an outstanding job, but they are extremely friendly, customer service oriented, and honest. The day that Rod (President) came out to give me an estimate, I thought that I had a short in one of my kitchen light fixtures. Rod quickly pointed out that I was not using the right type of bulb in the fixture (non-dimmable bulb on a dimmable light). That display of honesty led to me hiring Rod and his guys for the rest of the work I needed done, and I'm very glad I did. They ended up installing recessed lights in my basement, a receptacle on my front porch, repairing switches in my main breaker panel, and fixed existing receptacles throughout my house. The electricians Rod sent were very personable and courteous. They worked very efficiently, and ensured that my satisfaction was their number one priority. As the electricians worked they informed me that some of the work that they did was not as involved as originally anticipated, which ultimately led to me saving money. Another display of honesty and customer service at its finest. In addition, CAP was very flexible when it came to scheduling a day to come out. If you're looking for a company that prioritizes customer service and is extremely honest then look no further than CAP electrical. They are very good people who work hard and do the right thing! I'm very pleased with the work that they did and I know you will be too."
Response time1 day
Recommended by96%of homeowners
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Generator Install questions, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

The Whiteford, MD homeowners’ guide to generator installs

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