How to Read an Appliance Nameplate — Finding Your Real Numbers
Last verified: September 2026
Every appliance carries its real numbers on a little label called the nameplate. This guide shows where it hides and how to read watts, volts, amps, and the motor's surge clue — so you size from facts, not guesses. Questions? My number is (330) 200-8042.
Reading a Nameplate, at a Glance
The nameplate is the little metal or plastic label on every appliance, and it holds the real numbers you need to size backup power. This guide shows where the label hides — the back, the bottom, inside a door, or on the motor — and how to read it: look for watts, and if you only see volts and amps, multiply them. A motor's plate may also show a starting or LRA figure, your clue to its surge. Photograph every label before you shop, and never guess. There's a printable page-by-page version up top.
Common Questions
1 Where do I find the nameplate?
It's a small metal or plastic label, usually on the back, the bottom, inside a door, or on the motor itself. On a fridge, check inside near the top; on a furnace, inside the access panel; on a well pump, at the well cap, the pressure tank, or the breaker. Photograph each one.
2 The label shows volts and amps but not watts — now what?
Multiply the volts by the amps and you have the running watts. That's the one small bit of arithmetic a nameplate ever asks of you. Our worksheet guide gives you a place to write it down.
3 What is LRA, and why does it matter?
LRA stands for locked-rotor amps — the big gulp a motor takes at the instant it starts. It's your clue that this load surges, often several times its running figure for a second or two. Our running-watts-vs-starting guide explains the surge in full.
4 My plate only lists horsepower — how do I get watts?
Don't convert it with a guessed factor. Ask the maker (with the model number) or, for a well pump, your well company, for the running and starting figures. When in doubt, stay general and leave extra headroom.
5 What does 120V or 240V on the plate tell me?
The voltage tells you how the appliance is wired. Most everyday plug-in items are 120-volt; big loads like a well pump, central air, or an electric water heater are often 240-volt, which can't run on a plain cord and needs a transfer switch or interlock.
6 What if there's no readable label at all?
Check the manual or the maker's website with the model number. Don't move a heavy appliance or open sealed equipment to hunt for it — and for anything wired in, a licensed electrician can measure the real draw. I'm glad to help you track the numbers down.
Would You Rather I Just Help?
Nameplates can be faded, tucked in awkward spots, or full of markings that don't mean much on their own. I'll help you find each one, read it, and turn it into numbers you can size with — with nothing to sell you. $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).