Anyone who’s lived through a Georgia thunderstorm season or an ice storm in Cumming and the surrounding North Atlanta area knows power outages aren’t rare. A standby generator is one of the more significant electrical investments a homeowner can make, so it’s worth understanding how the systems actually work before deciding if one makes sense for your home.
Standby vs. Portable Generators
A portable generator has to be set up, fueled, and manually connected every time you lose power, and it can’t safely run your whole home. A standby generator is permanently installed outside the home, connects to your existing electrical system through a transfer switch, and starts automatically within seconds of an outage — often before you’ve even noticed the lights went out.
The Transfer Switch Is the Critical Piece
The transfer switch is what safely isolates your home’s electrical system from the utility grid when the generator kicks on. This is a code requirement, not an optional upgrade — connecting a generator without a proper transfer switch creates a serious safety hazard, including the risk of backfeeding power into utility lines that crews may believe are dead.
Sizing the Generator to Your Home
Generators are sized by how much of your home’s electrical load they can support. Some homeowners want everything covered, from HVAC to well pumps to kitchen appliances, while others are comfortable with a system that covers the essentials — refrigeration, lighting, and a few key circuits. Sizing it correctly starts with understanding your home’s actual electrical load, not guessing.
Installation and Fuel Source
Standby generators typically run on natural gas or liquid propane and require both electrical and gas or fuel line work, along with a concrete or composite pad for the unit itself. Because it ties directly into your home’s electrical panel, this is not a DIY project or one to hand to an unlicensed installer — it has to be done to code and inspected.
Ongoing Maintenance
A generator that hasn’t been maintained is a generator that may not start when you need it most. Periodic maintenance, including testing the transfer switch and checking the battery and fuel system, keeps it ready for the next outage rather than becoming an unpleasant surprise.
Coal Mountain Electrical installs and services standby generator systems for homeowners throughout Cumming and North Atlanta. Contact us or call 404-424-2131 to talk through what size and setup makes sense for your home.
