johnc
Anyone have any experience with these plug in countertop watt meters? If they work, would be more convienent than having a watt meter connected to the ATS.
Quote
Joey96er
Nope. Seen 'em at the Depot though. Would that device handle the current? Don't know what they are rated for? how about a couple "doughnut" CT's and analog gauge?
Quote
Canada_Guy
I have one of the "Kill A Watt Meter" units and it works very well. It is only intended for monitoring a single 120 VAC outlet and the appliance/device plugged into it.

[URL="http://www.p3international.com/products/special/P4400/P4400-CE.html"]http://www.p3international.com/products/special/P4400/P4400-CE.html[/URL]



It does a good job of tracking the cost and average current of a variable load such as a fridge or freezer. It would not be appropriate for monitoring the wattage of an ATS.

For my ATS, I built up a monitoring panel for it. I lucked out and was given a bank of 3 voltmeters and current meters that came from a hydro substation. I bought new 60 amp current transformers and rescaled the amp meters to read 0-60 amps. I installed 2 of the volt meters and 2 of the current meters in a box beside my ATS. Now I have real time voltage and current reading. I just need to buy a frequency meter and I will have all the bases covered.

If I didn't luck out on the meters, I was looking at some of these:
[URL="http://bluesea.com/category/6/23/products/1058"]http://bluesea.com/category/6/23/products/1058[/URL]

Not sure how I sit with "code compliance" on this. For added protection, I installed 2 fuse holders with 1-amp fuses in line with the hot wires going to the voltmeters. I thought if there ever were an issue that the 1-amp fuses provided better protection than the 15-amp breakers that I took the feed from.
Quote