A loss of power can be devastating, and quite often it comes unexpectedly. A stand-by emergency generator would obliterate these worries.


With an automatic standby generator installed by the professionals at A&H Electrical Services, Inc., Tampa Bay’s authorized dealer for Kohler and Generac, you can experience worry free, quality standby power. In addition, we specialize in sales, service, installation and maintenance of all other major brands of generators. A&H Electrical can provide professional services to customize standby power for your home and/or business.


Florida Residents That Lost Power Due to Recent Hurricanes


Typical length of time before power was restored to all impacted areas:
2 Weeks!

What is an Automatic Standby generator: The automatic generator provides a back up source of emergency power when the public power utilities fail. If the power goes out, your generator automatically kicks-in within seconds providing your home or business with a powerful and reliable source of energy.


In the U.S., standard household current is single phase, 120 volts. Most houses have 120/240v service, meaning they have two 120v circuits. The two are combined to provide 240v for power-hungry appliances such as electric ranges, central air conditioning and water pumps. Many small businesses use this 120/240v service.

However, larger businesses often have different power needs. Often, they use three-phase power, which is better for running heavy-duty motors than the residential-standard single phase service. In the U.S. three phase power usually produces 120/208 volts to 277/480 volts. Power generators are available for all common voltages – make sure you know what voltages your business is currently using and you'll be able to find a match.

How to measure wattage: The Automatic Standby Generator System installed by A&H Electrical Services, Inc. supplies the power you need, when and where your need it. Simply match the circuits from your home to the circuits in the automatic transfer switch to customize your power needs.

The smallest generators produce approximately 800 watts, while large industrial generators can produce 500,000 watts (500 kilowatts or KW) or more. Typical sizes are around 15 to 100 KW for small business.

Your individual electrical needs: Let our professionals help you determine the size and capabilities for your home. This allows you to keep your home, belongings and family safe and secure even during prolonged outages.

Running versus startup power:
One important characteristic to know about electric motors is that they take much more to start than to run. Because of this, you need to increase your wattage requirement. However, multiple devices rarely start-up at exactly the same time: even a refrigerator that’s plugged in only uses the compressor occasionally. So you only need to add enough power for the biggest startup requirement. Figure out what equipment has the largest difference between running load and startup load. Add the number to the running load of all your equipment added together to get your wattage requirement.

Once you’ve factored in your startup requirements, you should plan on purchasing a generator with a rated capacity of around 20% more than your exact requirement. This will give you room to add a few small devices, in addition to helping extend the lifespan of your generator.

Standby generators are used to offset the harmful effects of power outages: they’re installed permanently as an emergency power source for your business. They are hardwired into the building’s electrical system and often get fuel from city gas or propane lines. They start at around 7KW and can easily be as large as several hundred KW.

In contrast, portable generators are used to provide power in places that don’t have any, such as construction sites or other remote locations. In a pinch, they can also be used to power essential equipment during a power outage, just like standby generators. However, unlike standby generators, they’re designed to be used for short periods of time, only a few hours at a stretch. They tend to be much smaller and less expensive.

Automatic transfer switch:
To connect a standby generator to your existing electrical system, you’ll need a separate device called an automatic transfer switch. This switch is essentially a safety system that prevents your generator from feeding electricity back to the neighborhood power grid. When the power goes out, the generator will start up automatically, and after a few seconds to let it stabilize, the transfer switch will connect the generator to your home or business. When power comes on again, the switch will disconnect the generator and return your setup to normal.

Do not attempt to install a transfer switch yourself. Installation of transfer switches may require local permits, but it always requires a professional electrician.

Fuel Choices:
Generators can run on several different types of fuel. Diesel fuel is popular for larger, commercial generators. They tend to be dependable and somewhat cheaper to operate than generators that run on natural gas or propane. They do require deliveries of diesel fuel and a tank to hold it.

Standby generators can also run on natural gas or propane. The primary advantage of this is that no fuel storage is required – the generator is simply connected to utility lines and draws fuel when it needs to. The choice between gas and propane is based solely on which is available in your area.

Motor speeds and cooling systems:
Like any motor, a generator motor creates quite a bit of heat and needs a cooling system to prevent overheating. Standby generators can be either air-cooled or liquid-cooled. The major difference is that air-cooled systems are louder and not quite as effective. Liquid cooled systems are quieter and more dependable – and also more expensive to purchase and to maintain.

REMEMBER – Safety comes first. A generator installed properly will protect your loved ones during the storm.

-Many individuals require power for all types of medical equipment and oxygen especially for the disabled.
-It is important to keep your security system up and running effectively during the outage.
-Computer and e-mails

For all pricing contact:

A&H Electrical Services, Inc.
Generator Department
813-972-3880 or
Complete the form on the contact page and a qualified representative will contact you within 48 hours.


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