Question

A refrigerator is marked at 50W and 220V. What is likely to happen if the voltage drops down to 50V??

Answer 1

The performance of refrigerator will be impacted if the voltage fluctuation is too big. In general, the larger the range, the greater the refrigerator will be impacted. If the voltage is lower than 187 V, the refrigerator can’t work on and even burn down the compressor.

Answer 2

The motor won’t start, since there is insufficient voltage to initiate the rotational motion. It may try to start and draw a large current from the 50V supply, blowing the fuse on the supply or burning out the windings.