Sizing a Standby Generator with Load Management
Last verified: September 2026
A standby generator starts itself and runs your home automatically — and it's sized by a licensed electrician. The clever lever is load management: staggering big loads so a smaller, right-sized unit can serve a bigger house. Rather talk it through? My number is (330) 200-8042.
Sizing a Standby with Load Management, at a Glance
A standby generator is bolted in place, wired to your home, and starts itself automatically when the power fails — running on natural gas or propane. It's sized by a licensed electrician's load calculation. The clever sizing lever is load management (load-shedding): smart modules or a managing transfer switch briefly drop or stagger big loads — central AC, water heater, dryer, range, well pump — so they don't all run at once. That lets a smaller standby serve a bigger home. The key choice is whole-home versus managed essentials. This guide explains it in plain English, with a printable page-by-page version up top.
Common Questions
1 How is a standby generator sized?
By a licensed electrician's load calculation — the NEC has a standard method. It's a professional's design, matched to your home's loads and your goal, from whole-home coverage down to essential circuits.
2 What is load management, and why does it matter?
Load management (load-shedding) uses smart modules or a managing transfer switch to briefly drop or stagger big loads — central AC, water heater, dryer, range, well pump — so they don't all run at once. That lets a smaller standby serve a bigger home.
3 What's the difference between whole-home and managed coverage?
Whole-home aims to run everything at once, which needs a larger unit. Managed (or essential-circuit) coverage uses load-shedding to prioritize, so a smaller, less costly unit still keeps the important things running. See our essentials-versus-whole-home guide.
4 Does a standby run on gas?
Usually natural gas where it's available, or propane from a tank — and it starts itself automatically when the power fails. In town that's often natural gas; in the country it's usually propane, so plan the tank and fuel.
5 Can load management help my well pump?
Yes — on a rural home the well pump becomes one of the managed loads, staggered so its big 240-volt surge doesn't collide with the AC or water heater. The electrician sets the priorities so water keeps flowing.
6 Who installs a standby, and can you do it?
A licensed electrician designs and installs it (gas work by the proper pro), usually with a permit. I'm a tech helper, not an electrician — I help you plan your must-run list and shed priorities and coordinate the licensed pro.
Would You Rather I Just Help?
A standby generator is a wonderful thing for a home that leans on backup often — automatic, hands-off, and quiet. It's a licensed electrician's design, and I'm glad to help you get ready: I'll help you build your must-run list, think through load management and shed priorities, and coordinate a trustworthy licensed pro. $99 flat for a visit, 30-day come-back-free.
Would you rather I just do this for you?
No shame in it — plenty of folks would rather hand it off, and that's what I'm here for. I'll come to your home, set it up right, and make sure it's working before I leave. Flat $99 per visit — no jargon, no upsell, and every visit is 30-day come-back-free.
Not a hardware job? I can often fix it remotely for $49 — a secure screen-share, up to 2 hours, that you watch the whole time and can end whenever (included free for $39/mo Support Plan members, and it counts toward the $99 if it turns out I need to come out).