Re: Here is a nice invention that decreases your electric bi
I’ll admit to being a bit of a nerd…
I received my degree in finance, but I took a few Electrical Engineering courses as electives because I was interested. Then about 18 months ago we finished building a new home and I decided to put a “couple” of automated lighting devices in my family room.
That quickly became an entire home automation project (my wife was thrilled) and it required tampering with pretty much my entire electrical system. I started reading everything I could get my hands on regarding power distribution so as to not get myself killed. I even talked an electrician friend into letting me tag along on some jobs where he needed an extra hand so I could learn more.
POTM, that’s exactly why there’s so much confusion over these! They WILL reduce the current used. But, your electric meter doesn’t meter current used, it meters wattage used. Notice that your electric bill lists kWh, not Amps. Those two are equal in resistive loads like incandescent lights, but they’re not equal in inductive loads because of the power factor. Your current will drop with this device, but wattage (what you’re being billed for) stays exactly the same.
Now, the power company’s cost is in how much current they deliver. That means they have to deliver you more current for inductive loads and they don’t get paid for it. That’s why they put current meters and not wattage meters in industrial applications; because there’s A LOT of inductive load in those applications. And that’s why these capacitors are used in industrial applications… they do save those facilities money. There’s actually a conspiracy theory out there that power companies want to push these on residences so their costs will drop.
Obviously we’re well beyond the scope of the PMQ TT, but read that link I posted above from the Mike Holt website… it explains these things pretty well and even shows the math behind them. The math is interesting, because it shows that at times where you have NO inductive load running that a kVAR will actually cost you more money.
This will save you a significant amount of money only if your electric company is charging your for poor power factor, but I’ve never seen (or heard of) a residential or light commercial location fitted with that kind of meter. Please check with your electric company before you purchase this.
I know you posted this to try and save people money, but trust me, I’m trying to do the same for you!