A 120v backup power supply is a device that can provide backup power to a 120v electrical system in the event of a power outage. They are typically used in homes and businesses to provide backup power in the event of a power outage. There are a number of different types of 120v backup power supplies available, and each has its own advantages and disadvantages.
One of the most common types of 120v backup power supplies is the uninterruptible power …
