What now? Regarding Input Wattage and Possible Excess Power Draws However, you also found out that two kinds of wattage are included in it: output and input. Now, let’s assume you already saw the required electrical information on the nameplate. All the better if they allow you to input your microwave’s precise model and give you the exact manual. Try looking for a digital version of the manual on the official website, assuming they have separate online resources that can be downloaded. If you can’t read the nameplate or label anymore or it’s just not available (which makes the product highly dubious), don’t hesitate to reach out to the manufacturer for the information. On the whole, I wouldn’t be surprised if there are deviations due to the other points I’ll make below. You can, more or less, confirm or disprove the calculations we made here. Given the formula for current (I = P / V) and assuming the voltage is 110V, here are the different amperages of the common microwave products available: You should also try double-checking your microwave’s exterior and interior parts. If the microwave oven amperage and output wattage aren’t in the nameplate, you can check the manual. Overall, microwaves draw comparatively less power compared to portable spas, clothes dryers, and heaters. With such a fairly small variation in wattage among microwaves, it’s not surprising that many are served by 15A or 20A breakers, with all other gadgets and fixtures in the same circuit considered (although it’s advisable to give the microwave its own circuit). energy consumption) in listings, you shouldn’t have a hard time calculating the amps for a microwave, assuming it’s not readily visible. Since most products readily display their wattage (i.e. Larger models have outputs that can reach over 1,600W. That power still falls within the normal wattage for microwave products in the US, which ranges between 600W to 1,200W. We’re going to assume it’s a 110V device because 1200W / 110V = 10.9A (11A rounded off). As you can see from this LG microwave, for example, it’s rated for 11A with a power output of 1,200W. Usually, you only need to check the appliance’s nameplate first to see its amp rating. Regarding Input Wattage and Possible Excess Power Draws.
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