Get Wired: Ohm’s Law

Get Wired With Squires Electric - ohm's law video

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Every property system, electrical or otherwise, eventually experiences some sort of breakdown or failure due to normal wear and tear conditions.  The faster and more accurately you can diagnose the problem, the less costly it will be to repair.  Here’s another Squires Electric troubleshooting tip.

Why does your breaker always trip at certain times of the year? How many devices can safely be shared on a circuit? It’s easy to determine thanks to a mathematical formula called Ohm’s Law. I’m going to show you how to apply it just like an electrician would.  And it’s much easier than you might think.

Circuit breakers are triggered by the ampacity of a circuit. That’s the maximum current, or amperage, that a conductor can continuously carry without exceeding its temperature rating.  If the ampacity exceeds the circuit breaker limit, the circuit is opened to stop the flow and prevent damage.  Electricians determine the amperage by adding the wattage of connected devices and dividing by voltage of the circuit.  For example: your 1,200-watt microwave is fed by a 120-volt circuit, you’ll divide that 1,200-watts by 120-volts and you’ll know that the microwave will draw 10-amps. 

Congratulations—you’re now an amateur electrician.  But fear not, if you have more challenging questions, Squires Electric is here to help.

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