Some modern refrigerators draw a surprisingly small amount of current for all the work they do. Although the NEC figures 1,200 watts in its load calculations for a refrigerator, some only require half that amount. It’s apparent that it takes more electricity to produce heat than to maintain cold. The code allows a refrigerator to be supplied by its own 15- or 20-amp circuit, but it does not require a dedicated circuit. You can run a refrigerator off one of your small-appliance circuits, but many electricians recommend a dedicated circuit for the fridge.
Why? Remember, your small-appliance circuits are GFCI-protected. All it takes is one instance of nuisance tripping, and your refrigerator could be off for hours (or weeks, if you’re out of town). In addition to losing a lot of food, you’ll have to clean out some pretty rank stuff. A Sub Zero brand refrigerator (or other high-end refrigerator) requires a dedicated 15-amp circuit.
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