Generators consist of two major components: an engine and an alternator. Picking the wrong one, or using it improperly, could damage the generator or what is connected to it, at best-at worst, it could be dangerous, posing a risk of fire, electrocution, or carbon monoxide poisoning. Picking the right one means you’ll be able to power up the appliances or equipment you need. There are often laws, rules, and restrictions regarding their use in residential homes, with homeowners associations, at campgrounds, or on construction sites. SHOP NOW What You Need to Know About Portable Generatorsīefore running out to buy a portable generator it’s important to think about how and where you’re going to use it.