It can be challenging and a little intimidating for most people to buy a generator. We at CRN Generator Reviews have put together a guide to help you make the best decision for your particular needs. Let's start out with some fundamentals.

A generator uses an engine. The engine uses gasoline, natural gas or liquid propane to convert mechanical energy into electrical energy. Generators are one of 2 basic types: standby or portable.

Let’s talk about portable generators first. Portable generators can provide power at any location you choose. As with a standby generator, they provide power to your home in case of power failure, but they can also go with you when camping, to a job site, or any place where you need power and the distance is too great for an extension cord. Portable generators run on gasoline. The larger units are capable of powering several appliances and tools at the same time, as well as both 120/220 Volt and 220 Volt outlets. If you plan to provide power to your home circuits, you will also need a transfer switch. Prices for small portable generators start at a few hundred dollars.

The second basic type of generators is a standby generator. A standby generator’s wiring goes directly into the electrical system of your home. In the event of a power failure, the generator will be able to power to all your electrical circuits and appliances, or at least the most critical ones, depending on the power output of the generator. Most standby generators are capable of starting automatically when the power goes out. Standby generators tend to be expensive, and since installation is permanent, often will require a permit.

Once you have decided on the type of generator that best meets your needs, there are a number of considerations:

Determine how much power you need. Wattage required for different appliances varies dramatically. For instance, a string of Christmas lights require only 20 Watts, a small refrigerator 400 Watts, a sump pump 800 Watts, a circular saw 1,500, Watts while a water heater needs a whopping 4,000 Watts. Adding up the wattage of the various appliances you plan to operate will indicate the required power output of the generator.

Ratings for most generators are for running Watts as well as surge or peak Watts. The sum total of your power needs should not exceed the running Watts; the additional surge Watts provide extra power needed when starting up many appliances. For instance a refrigerator requiring 600 watts for normal use may need several times that at start up. If in doubt, buy a unit larger than you think. Extra power can come in handy later.

Do you need a transfer switch? If you plan to power your home circuits, you will need a transfer switch to switch between power from the generator and utility power from the grid. A transfer switch automatically switches the generator when it senses utility power failing, or it can be a manual type, requiring you to switch between the 2 power supplies.

In addition to the power output, you also want to consider the number of outlets available on a generator.

Larger portable generators can weigh several hundred pounds. Sturdy wheels and frame will make the job much easier.

CRN Generator Reviews can assist greatly in making your purchasing decisions. Generators are noisy beasts and the noise level is a major factor. A quality muffler will make a big difference.

Generators come with a variety of extra features. Look for models that automatically warn you of low oil levels.

Finally, a little bit of safety advice. Always read the instruction manual first, cover to cover, and never run a generator indoors, in enclosed areas, or near windows. The exhaust fumes are definitely not good for your health. Turn the generator off before adding more fuel, and be aware that parts of it will be very hot and can ignite gasoline. Never plug or wire the generator directly into your house grid.