Saturday, February 27, 2010

Watts the deal?

In my last post I tried to explain voltage, current, and resistance. Not too sure how well I succeeded, but no matter. Ever forward, right?

There's one more term that we'll see frequently - watts. Watts (W) are a measure of power, and are calculated by multiplying current by voltage. So if you have a 100 watt light bulb that runs off 120 volts, that bulb would draw .84 amps (100 watts divided by 120 volts). Pretty simple, huh?

So, what's the benefit of knowing all this, you may ask. Well, for starters you can figure out if you have enough power to run your haunt before you overload your power supply and burn your yard up (that would be bad). Just add up the total amperage draw for each circuit & make sure your power supply has a high enough amperage rating to exceed the total load.

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