| Selecting the correct size ups system is not as | | | | ups using Watts, you don't need to worry about |
| hard as you might think. However, it is vitally | | | | the power factor. The Watt rating of a ups |
| important because an undersized ups will not | | | | system is simply a measure of how much |
| function when the power goes out. Here's how.. | | | | equipment you can plug into it. |
| UPS systems are rated by their Volt Amp (VA) | | | | If you get a ups system that has a Watt rating |
| and Watt output capability. For example, a ups | | | | that is too small, it will not provide the battery |
| may be rated at 1500VA / 1200 Watts. The | | | | backup that you are counting on, or it may not |
| difference in VA and Watts is due to an electrical | | | | work at all. Determining the size requirement for a |
| property called a power factor, but if you size the | | | | ups is a pretty straightforward process. |