Ask a Wellington Electrician: How Do I Size a Generator For My Home?

Posted On: January 23, 2014

Properly Sizing Your Generator Can Save You Money

As a homeowner, you are probably very aware of the fact that having backup generator power is important. What you may not know, however, is the proper way to choose one for your home. No worries – Reliable Power Systems is here to help.

After assessing a Wellington property, we discovered that the best generator size for their family’s needs was a 20kw. Every home is different, as are the number of appliances needed to be powered on. That’s why Generac comes in all different models and sizes, and why Reliable Power installs, repairs, and services them all.

What Size Generator Do You Need?

There are a number of factors that you need to consider when deciding on a size for your generator:

  1. How many appliances and devices will be powered by the generator? A good ballpark estimate will suffice for this. Wrongly sizing your generator could give you false hope that an important household appliance will work when, in reality, the generator doesn’t produce enough power to turn it on.
  2. Once you have a list of each item, try to put together a list of the starting and running wattage of the respective items. This may be available on the unit or in the manual, so check there first. If not, have a Reliable Power technician take a look at everything for you.
  3. Then you will want to calculate the total power requirements in kilowatts. Again, this may not be easy for you to find and determine, so if you are having trouble, our technicians can help you.

Why Is it Important to Correctly Size a Generator?

Besides ensuring that you’ll have a generator that serves all of your backup power needs, you’ll want the proper size because:

  1. Less of a chance of appliances getting damaged: If they can continue to run instead of being abruptly turned on or off due to power loss, it helps to extend their life.
  2. Hassle-free maintenance: If we know going in that your generator hasn’t had any premature breakdowns or problems because of it being improperly sized, then the maintenance visit will go much more smoothly.
  3. Increased generator life: A smaller generator, for instance, will work harder than it’s designed to and will probably break down more quickly than you would like.
  4. No unexpected system failures: Again, a generator working too hard could stop working at the most inconvenient times.
  5. You’ll save money: If you get a generator that’s too big for what you need to power, you’re wasting money by having it generate that power you aren’t using.
  6. Personal safety: You won’t have to worry about it overloading when you or a family member is standing by it. It also means that you won’t be stuck without power, ensuring you and your family’s safety and protection in the event of an outage.
  7. Guaranteed performance: You’ll rest easy knowing your home will never be without power.

For help in sizing your generator, or to schedule an installation, call Reliable Power Systems today!