How Many Amps Is a Refrigerator? The Parts That Add Up

A standard US household refrigerator draws 3 to 8 amps at 115 to 120 volts while its compressor runs, and that nameplate figure is a maximum measured under defined test conditions. Averaged across a full year, a full-size refrigerator pulls roughly 0.4 amps: the median ENERGY STAR certified full-size model uses 457 kWh annually, which works out to 52 watts of continuous draw. For a fraction of a second at each compressor start, the same appliance can pull 22 to 43 amps. Manufacturers and the National Electrical Code size the branch circuit for the peak rather than the average, which is why an appliance averaging under half an amp still gets its own 15- or 20-amp line.

The rating plate holds three different numbers, and only one describes the appliance

The published specification for a Frigidaire Gallery FGHS2655P, a 26-cubic-foot standard-depth side-by-side, carries a Voltage Rating of 120V / 60Hz / 15 A, a Connected Load of 1.02 kW at 120 volts, Amps @ 120 Volts of 8.5, and a Minimum Circuit Required of 15 amps. Four values, three meanings. Both 15s describe the wire and the breaker. The 8.5 describes the refrigerator. Homeowners quote the 15 to electricians all the time, and it is the one number on the plate that tells you nothing about how much current the machine draws.

Lab-grade cabinets publish the split more plainly. Thermo Scientific's technical sheet for the 18LCEETSA, an 18-cubic-foot general-purpose refrigerator, lists Electrical Power as 115 V / 60 Hz and Rated Current as 6.0 Amps, with a three-prong NEMA 5-15P cord. Six amps is the appliance. The 5-15P plug tells you where it belongs.

Even 8.5 amps overstates ordinary running. That number is the sum of everything the cabinet can energize simultaneously — compressor, condenser and evaporator fans, defrost heater, icemaker mold heater, interior lighting — under test conditions the manufacturer defines. I have spent eighteen years distrusting exactly this species of number in a different trade. A floor finish rated at 500 square feet per gallon is measured on a sealed, non-porous panel. On the quartersawn oak in my 1920s apartment the first coat went 320 and I had bought for 500. The published figure was honest; the conditions behind it were the part I skipped.

Why the plate says 115 volts when your outlet reads 120

PacifiCorp's engineering handbook, which follows ANSI C84.1, states the rule directly: "Voltage ratings in each class of utilization equipment should be the same as the nominal system voltage, or related to the nominal system voltages by an approximate ratio of 115 to 120." Service voltage is measured where the utility hands power to the house. Utilization voltage is measured at the appliance terminals, after the drop through your panel and branch wiring. For a 120/240 three-wire residential service, the favorable Range A in C84.1 permits 114 to 126 volts at the service and 108 to 126 volts at the equipment. The NEC's informational notes recommend holding branch-circuit voltage drop under 3 percent.

GE Appliances splits the difference in its own documents. The installation section of GE's bottom-freezer manual reads: "A 115 Volt AC, 60 Hz, 15- or 20-amp fused, grounded electrical supply is required." Its support documentation phrases the same requirement as "a 115-volt or 120-volt, individual, properly grounded branch circuit."

That voltage spread has a current consequence, and it runs opposite to what most people expect. A 1,020-watt load at 120 volts draws 8.5 amps. The same load at 108 volts draws 9.4. Motors answer low voltage by pulling more current, which is why a long, undersized run to a garage refrigerator makes the compressor run hotter rather than weaker.

Across a year, the number collapses

The Federal Trade Commission's Energy Labeling Rule, 16 CFR Part 305, requires the yellow EnergyGuide label on every refrigerator sold in the United States, and its central figure is estimated yearly electricity use in kilowatt-hours, determined under the Department of Energy test procedure in 10 CFR Part 430. That is the number to divide.

Querying the ENERGY STAR certified products database in September 2026 returned 2,937 full-size residential refrigerators. Their median annual consumption is 457 kWh, the mean 473, and the full range runs from 114 to 805 kWh. Divide 457,000 watt-hours by the 8,760 hours in a year and you get 52 watts — 0.43 amps at 120 volts.

| Configuration | Certified models | Median annual use | Average draw at 120 V | |---|---|---|---| | Freezerless and single-door | 295 | 286 kWh | 0.27 A | | Top freezer | 811 | 362 kWh | 0.34 A | | Bottom freezer | 1,657 | 556 kWh | 0.53 A | | Side-by-side | 123 | 640 kWh | 0.61 A | | All full-size models | 2,937 | 457 kWh | 0.43 A |

The compressor is not sipping 0.43 amps. It is drawing several amps for part of each hour and nothing for the rest, and the average smears that cycling into a figure no meter will ever show you. Compare the Frigidaire side-by-side again: 8.5 amps on the plate against roughly 0.61 amps averaged over its class. A factor of fourteen separates the two, and both are correct.

Bottom-freezer models, the most numerous class in the database at 1,657 entries, run a median 556 kWh against 362 for top freezers. Convenience costs about 194 kWh a year.

The half second that sizes your circuit

When a hermetic compressor starts, the rotor is stationary and the motor is briefly a low-impedance load. The current that flows in that instant is locked-rotor amperage, and manufacturers publish it. These figures come from Secop's technical datasheets for single-phase 115 V / 60 Hz compressors, the class used in North American refrigeration.

| Compressor | Displacement | Rated load amps | Locked-rotor amps | Ratio | |---|---|---|---|---| | Secop NF6.1FX.2 | 6.13 cm³ | 3.7 A | 22.2 A | 6.0× | | Secop NLE11CNL | 11.15 cm³ | 5.74 A | 28.67 A | 5.0× | | Secop SC12G | 12.87 cm³ | 4.3 A | 23.4 A | 5.4× | | Secop SC15G | 15.28 cm³ | 7.6 A | 39.7 A | 5.2× | | Secop SCE18CNLX | 17.68 cm³ | 8.3 A | 43.13 A | 5.2× |

Five to six times running current, consistently. Secop measures locked-rotor over a four-second window and rated load over one second, and prints a caution I would rather people read than ignore: "LRA value on compressor label and datasheet may differ due to different test conditions for UL approval." Copeland puts the real duration at 100 to 300 milliseconds. Kohler's generator-sizing paper notes the inrush "stays high until the motor reaches about 75 percent of rated speed."

A 15-amp breaker does not trip on a 28-amp pulse because thermal-magnetic breakers follow an inverse-time curve. Small overloads are tolerated for a long time, large ones for a short time, and a 300-millisecond excursion at twice the rating falls well inside what the thermal element ignores. What does trip is the same pulse arriving while something else on the circuit is already loading it. My own kitchen has one 20-amp small-appliance circuit feeding the refrigerator receptacle and the counter, and a 1,500-watt heat gun for softening old paint puts 12.5 amps on it. The breaker holds until the compressor cycles on underneath the heat gun. That is not a refrigerator problem.

A microwave draws more amps and uses far less electricity

The comparison is useful because the two appliances fail in opposite directions.

GE's specification for the JES1657, a 1.6-cubic-foot countertop microwave, lists an electrical input of 14.5 amps and 1,600 watts at 120 volts, delivering 1,150 watts of cooking power under the IEC-705 test. That input figure is nearly double the Frigidaire refrigerator's 8.5-amp plate rating, and unlike the refrigerator, the microwave's demand is essentially steady from the moment you press start. There is no compressor, no locked-rotor pulse, no cycling.

Now run both across a year. A microwave used fifteen minutes a day consumes about 146 kWh annually. The median full-size refrigerator uses 457. The microwave wins the amperage contest roughly two to one and loses the energy contest roughly three to one, and each fact drives a different decision. Amperage decides what shares a circuit. Kilowatt-hours decide what shows up on the bill.

GE requires the same branch circuit for both — "a 120 volt, individual, properly grounded branch circuit with a 3 prong grounding type receptacle protected by a 15 or 20 amp circuit breaker or time-delay fuse" — and adds that over-the-range microwave models should always be on a dedicated circuit. At 14.5 amps, a countertop microwave alone consumes 97 percent of a 15-amp circuit.

What the Code actually permits

NEC 210.11(C)(1) requires two or more 20-ampere small-appliance branch circuits in a dwelling unit, and 210.52(B)(1) directs those circuits to serve the kitchen, pantry, breakfast room, and dining room receptacles, explicitly including "receptacle outlets for refrigeration equipment." A refrigerator on a shared 20-amp small-appliance circuit is code-compliant.

Exception No. 2 to that section permits a receptacle outlet serving a specific appliance to be supplied from an individual branch circuit rated 15 amperes or greater. The permission is conditional on the circuit being individual — one piece of utilization equipment, nothing else. A 15-amp dedicated line for the refrigerator is legal. A 15-amp line shared with the counter is not.

Where circuits are shared, 210.23(B)(1) sets the ceiling: "The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed 80 percent of the branch-circuit ampere rating." Twelve amps on a 15-amp circuit, sixteen on a 20. An 8.5-amp refrigerator clears both. A 14.5-amp microwave clears neither on a shared 15.

Reading your own refrigerator's numbers

Six steps, and you need nothing but a flashlight.

1. Find the rating plate. On most full-size units it sits on the interior liner near a crisper drawer or on the rear panel beside the compressor.
2. Write down the voltage and the amperage exactly as printed, keeping them separate from any "minimum circuit" or "voltage rating" line, which describes the breaker.
3. Multiply volts by amps for the worst-case wattage. A 115 V, 6.0 A plate gives 690 watts.
4. Read the annual kilowatt-hours from the EnergyGuide label or look up the model in the ENERGY STAR product finder.
5. Divide those kilowatt-hours by 8,760 for average watts, then by your nominal voltage for average amps.
6. Compare the plate amperage against 80 percent of the breaker rating on the circuit it shares — 12 amps on a 15, 16 on a 20.

The gap between step 3 and step 5 is the whole subject. On a typical side-by-side it is a factor of ten or more.

Sizing a generator or an inverter

Here the peak stops being academic. Honda rates the EU2200i inverter generator at 120 V, 1,800 W continuous (15 A) and 2,200 W maximum (18.3 A). Renogy's 2,000-watt pure sine wave inverter carries a 4,000-watt peak surge. Both publish two numbers for the same reason the refrigerator does.

Naively, a locked-rotor draw of 28.67 amps at 120 volts is 3,440 volt-amperes, which appears to exceed everything above. It does not, because volt-amperes are not watts during a motor start. Kohler's engineering paper is explicit: "Starting power factors of motors vary from 0.3 to 0.5 and increase towards unity as the motor accelerates and its kVA demand drops." At a starting power factor of 0.4, that 3,440 VA represents roughly 1,380 watts of real power. The engine sees about 1,400 watts; the alternator has to swallow 3,440 volt-amperes of apparent load.

Which is why generator specifications quote a surge rating separately, and why sizing on running watts alone strands people at 2 a.m. with a unit that hums and stalls. Use the locked-rotor figure for the surge check and the running wattage for the runtime math. If your compressor's locked-rotor amperage is not printed on the compressor label, five to six times the rated running current is the working estimate the datasheets above support — though I have been wrong about a printed number often enough to prefer a clamp meter's inrush function to any multiplier.

Frequently asked questions

Does a refrigerator need a 15- or 20-amp outlet?

Either works. GE specifies "a 115-volt or 120-volt, individual, properly grounded branch circuit" protected by a 15 or 20 amp breaker. A typical full-size refrigerator draws 3 to 8 amps, well under both ratings. Choose 20 amps if the circuit will ever be shared with countertop appliances.

Can a refrigerator run on a 15-amp circuit?

Yes. NEC 210.52(B)(1) Exception No. 2 permits a receptacle serving a specific appliance to be supplied from an individual branch circuit rated 15 amperes or greater. The condition is that the circuit be individual — the refrigerator and nothing else. Shared 15-amp circuits limit any one plug-in appliance to 12 amps.

How many refrigerators can a 20-amp breaker serve?

Two typical units at 8.5 amps each total 17 amps, exceeding safe practice even though no single appliance breaks the 16-amp limit in NEC 210.23(B)(1). One refrigerator per 20-amp circuit is the practical answer. Simultaneous compressor starts cause the trip; steady running rarely does.

How much current does a refrigerator draw at startup?

Between 22 and 43 amps for 100 to 300 milliseconds, depending on compressor size. Secop's published datasheets for 115-volt units show locked-rotor amperage of five to six times rated running current: 22.2 A for a 6.13 cm³ compressor, 43.13 A for a 17.68 cm³ one.

How does refrigerator amperage differ on 220V supply?

Roughly half, for the same wattage. A 1,020-watt refrigerator draws 8.5 amps at 120 volts and about 4.4 at 230. Secop's R600a compressors sold for 220–240 V markets list rated load current near 1.3 amps and locked-rotor at 6.6, against 7.6 and 39.7 for a comparable 115-volt unit.

Which number on the label should I use to size a generator?

Use both. Running wattage — volts times nameplate amps — sets your fuel and runtime math. Locked-rotor amperage sets the surge requirement. At a starting power factor near 0.4, a 28.67-amp inrush at 120 volts is about 3,440 volt-amperes but only 1,380 real watts.