Home Builders, Plumbers, Architects

Since Hurricane Sandy hit Connecticut in 2012, brand awareness for standby generators has become common knowledge for most homeowners. We can assist you and your client through any stage of installing a residential or commercial grade generator- from blueprint, to framework, to final build.

Four Factors to Consider for Installing a Standby Generator

  1. Generator Placement: All residential standby generators are required to be placed at a minimum distance from any openings to the home- exhaust vents, doors, windows, etc, and should have ample clearance at the intake and outtake of the generator engine.
  2. Electrical Load Coverage: Will the electrical load requirements for my client be applicable for a residential or commercial standby generator? Homes heated by oil, propane, or natural gas most likely can be outfitted with a residential size air-cooled generator 8 to 22 kW. Homes with 400 Amp Service and above, or have heating and cooling systems with robust electrical needs, may require a commercial grade generator.
  3. Transfer Switch Placement: Full house application Automatic Transfer Switches can be placed either inside or outside the home. Partial coverage Automatic Transfer Switches are usually placed near the main electrical panel inside the home. If the home has multiple electrical sub panels- wiring accessibility from the main panel to the circuits on the sub panel should be considered.
  4. Fuel for the Generator: Propane tanks for a standby generator require a minimum distance of 10 feet away from a generator. Most clients prefer the placement of the tanks to be as obtrusive as possible. Natural Gas Meters that are connected to standby generators are sized to the BTU rating of generator, along with the natural gas appliances in the home. A standby generator typically has a much higher BTU rating than common household appliances.


If you are an electrician and have the technical background to install a standby generator for your client, but do not have the manufacturer certification for maintaining or servicing the generator, we can provide you and a ‘Start and Test’-verification that your electrical installation meets all state and manufacturer guidelines. Every technician that services through O.J. Mann Electric has installed and/or maintained hundreds of generators throughout Connecticut and has factory certification from all three manufacturers we carry.

Cost for our service is typically $350.00 for a residential grade air cooled generator manufactured by Generac, General Electric, or Kohler. Our service is typical 3-5 hours depending on the complexity of the project.

Our Company

O.J. Mann Electric Services, Incorporated is a commercial, residential, and industrial electrical contractor, as well as a full service service generator dealer. We have been servicing customers throughout the state of connecticut for over 40 years.
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Our Service Area

We service every town throughout the state of Connecticut.

Contact Us
(203) 250-8715

1484 Highland Avenue | Unit 4B

Cheshire, Connecticut 06410

CT LIC#: 103686