I looked at more of 5-2-1's website, viewed the "installation video" which shows the wiring diagram. The audio wasn't clear but he says something about "117" early in the narration. I could not tell if he's saying that residential A/C (probably about a 3-ton by the look) drew 117A on startup before installing the device, OR if he saw 117-Volts AC. He might see that from one leg of the 240VAC service to neutral, but across the wiring that 117 should have been 234. Anyhow, when they start the unit up with the device installed, their clamp-on ammeter shows around 19A and drops to 14A immediately. They're marveling at the improvement, but they're using this exact meter that I searched out and found on Amazon.
It's a $12 tool, direct "drop ship" probably direct from China, but from the specs it is clearly NOT a Peak Inrush-Reading Meter. It has a "Data Hold Button" but the numbers it holds won't be peak inrush.
I'm not saying this device is no good. What I AM saying is the video doesn't prove it. It may well be equivalent to the Relay type of Start Device. If so it's a little better than SUPCO SPP6e. Which would I choose? The one Chris Bryant endorses. Hopefully he'll be by and have a remark.
