These models juice up your refrigerator, air conditioner, and other essentials during an emergency—no matter what.

If you're looking to power your RV while on the go, Harbor Freight's 30AMP Predator Parallel Kit has plenty of juice. Here's how the generator works.

A parallel management system (PMS) connects low-watt generators (around 100kW) to create a greater power source. Sites without access to high-watt generators (around 300kW or more) are primary users.

Picking a generator depends mainly on the size of your home and what you wish to power. The average house will take at least 5,000 to 7,500 watts to run only the most critical equipment—think ...

For a portable generator, you’d need four to eight 20-lb. propane tanks on hand to run the generator for 24 hours—a lot of grill tanks. Larger cylinders are available.