This is a pretty important measurement. I was hoping that the Power-Save was eliminating the out-of-phase current, leaving only the in-phase component. But if it throttling down the in-phase current as well, that's another story. It would be nice to know the Power Factor in both cases, which would answer the question.
Let's assume for a moment that the Power-Phase does eliminate the out-of-phase current, but not the in-phase current.The immediate question that comes to my mind is "Are the current specs for an inverter (continuous and surge) based on in-phase current or the total current, part of which is in phase and part out of phase?" I suspect it is the latter (total current). In which case the Power Phase (or its equivalent) would be useful in presenting lower (motor based) surge currents to an inverter. Another question that I have thought about every since I bought my first Kill-a-Watt, "Is there a similar version for 240V loads? I suspect that one could kludge two 120V Kill-a-Watts together in a j-box and make it work some how, but a real 240V version at a reasonable price would be great news. - Peter Peter T. Parrish, [EMAIL PROTECTED] _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Yago Sent: Sunday, August 24, 2008 8:56 PM To: RE-wrenches Subject: Re: [RE-wrenches] Power-Save and Power Works On start up, the A/C unit went up to 91 amps and leveled out at 13 without the Power-Save 1200 on. When the Power Save unit was engaged it was a draw of 35 amps and leveled out at 8.75. That pretty much blew everyone away! After that, I tested everything with a motor load in my house. I was astonished at the significant reduction in amperage. - - - - - - - - - - - - - - - - - - - - - - - - - You note they are not measuring the output of the device being connected. For example, they are reducing the current draw of the motor in the AC unit by slowing it down a little, which will reduce the cooling output by same percentage. Like a variable-speed-motor drive, yes you can reduce the motor current draw, but you are also slowing down the fan, pump, or compressor it is driving. Only time this may be an advantage is if you want to reduce the output of the device being driven as part of redicing its current draw. Jeff Yago _____ Netscape. Just the Net You Need.
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