Transfer switches · Southern NH and the Merrimack Valley
Generator Transfer Switch Installation in Southern NH and the Merrimack Valley
The automatic or manual switch that moves your home to generator power and keeps it off the utility lines.
What you get
The safety heart of every backup system
A generator transfer switch is the equipment that moves your home's circuits from utility power to generator power and back, and it guarantees the two sources can never feed your wiring at the same time. We install automatic transfer switches for standby generators, manual transfer switches and transfer switch panels for portable generators, and the load management that keeps a generator from being overloaded.
The generator gets the attention, but the transfer switch is what makes backup power safe. The National Electrical Code requires transfer equipment for a home generator so power cannot backfeed onto the utility lines, where it can injure line crews. An automatic transfer switch watches the utility around the clock and switches the house over in seconds. A manual transfer switch panel lets you move a set of chosen circuits to a portable generator with a few switches. We size and install the right one for your generator and your panel.
Match the switch to the generator
We look at your generator, your service, and what you want backed up, then recommend an automatic or manual transfer switch sized to it, with a clear written number.
Install under permit
We mount and wire the transfer switch, connect the circuits or the whole service, add load management where it is needed, and pull the permit.
Test the transfer and inspection
We simulate an outage, confirm the switch transfers and returns cleanly, pass the inspection, and show you how it behaves.
More generators
Other generators we install
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Straight answers
Generator Transfer Switches: common questions
Straight answers from a licensed master electrician. Flip any breaker to read it.
Get a Free EstimateDo I need a transfer switch for a generator?
Yes, for any generator connected to your home's wiring. The National Electrical Code requires transfer equipment so the generator and the utility can never feed the house at the same time. For a portable generator that can be an interlock kit or a manual transfer switch; for a standby generator it is an automatic transfer switch.
What is the difference between an automatic and a manual transfer switch?
An automatic transfer switch senses the outage, signals the standby generator to start, and switches your home over on its own within seconds, then switches back when utility power returns. A manual transfer switch is used with a portable generator: you start the generator and flip the switches to move your chosen circuits over yourself.
Can a transfer switch keep a smaller generator from overloading?
Yes. Load management modules and managed transfer switches shed big loads such as central air or an electric water heater when the generator is near its limit and bring them back when there is room. That lets a right-sized generator run the home without tripping, which often saves real money on the unit.
Get an honest quote for Generator Transfer Switches
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