David R
03-13-2007, 05:23 PM
OK, I have been reseaching for a while. My shop has a single phase power factor meter. I am careful to shut off the compressor when I am using my wirematic 250 that draws 30 amps on higher settings. Now I am getting an invertec 350 that draws about 85 amps at 425 output.
I called the electric company and waded through a bunch of menues and finally got a real person. I asked the person how I was charged and she did a terrible job of answering me. I had to do it all over again to get another person. This one was nice and knew what I was talking about.
She told me they charge $8.85 per Kilowatt. That would be maximum Kw. SO, I read my meter and it said 2.4 Kw. I have run my wirematic 250 at near max spray welding and it draws 30 amps. I may of only reached 25 amps because it wasn't all the way up. By MY figuring, Volts X amps = Watts. 220 volts, 25 amps = 5500 Watts, or 5.5 Kw. Maybe they only use one leg. I dunno.
They charge the $8.85 per Kw and add that to the bill. I pay 9.2 cents per KilowattHOUR, PLUS the $8.85 * 2.4 = $21.24 added to my usage.
If this is right, the Invertec should use tripple that at max output, so that would add another $42.48 PLUS the actual usage in Kilowatthours.
The lady told me if I don't go over 5 Kw in a year, they will take out my demand meter and put in a regular one. The rate per Kilowatthour would go up to 12.something cents.
Discussion invited
David
I called the electric company and waded through a bunch of menues and finally got a real person. I asked the person how I was charged and she did a terrible job of answering me. I had to do it all over again to get another person. This one was nice and knew what I was talking about.
She told me they charge $8.85 per Kilowatt. That would be maximum Kw. SO, I read my meter and it said 2.4 Kw. I have run my wirematic 250 at near max spray welding and it draws 30 amps. I may of only reached 25 amps because it wasn't all the way up. By MY figuring, Volts X amps = Watts. 220 volts, 25 amps = 5500 Watts, or 5.5 Kw. Maybe they only use one leg. I dunno.
They charge the $8.85 per Kw and add that to the bill. I pay 9.2 cents per KilowattHOUR, PLUS the $8.85 * 2.4 = $21.24 added to my usage.
If this is right, the Invertec should use tripple that at max output, so that would add another $42.48 PLUS the actual usage in Kilowatthours.
The lady told me if I don't go over 5 Kw in a year, they will take out my demand meter and put in a regular one. The rate per Kilowatthour would go up to 12.something cents.
Discussion invited
David