Q: Last year, we endured a power outage that lasted for days. After that experience, we decided to buy a generator, but we’re just not sure what to buy. How big of a generator do I need to power my ...

Find the right generator size and calculate the power you need to keep your home running smoothly.

Your generator also must have at least a 30-amp/240-volt output. To calculate wattage for a standby generator, check a year's worth of electric bills to find the highest kilowatt usage.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Start by making a list of the devices and appliances you need to power and add up the number of watts it ...