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In California they have the Legion Solar kits which are a bit over kill in my opinion. You need Anti Islanding Grid Tie Inverters. It's easy enough to test with a multi meter. No AC to the unit should mean no AC coming out of the extension cord. The Legion stuff has a transformer set that clips...

Bob Hope, I am on the fence with my Y&H 120W MPPT Grid Tie Micro Inverter. It worked great for two months, Dec/Jan but then it blew the AC side fuse. I am getting two sets of parts to solder on for $7 each and they are confident this will fix it but for how long? I will be lucky to be able to...

Mine worked great for 2 months (120 Watt GMI 120L) then the AC fuse fried. I am getting 2 sets of replacement parts and fuses for $15 but I need to solder them on! I guess your results may vary. ROI is over 600 Days now with full sun so I doubt I'll ever see any savings but it is sill fun!

Very interesting. Basically you add a draw on the same ac circuit with and without the inverters power and then use the difference to correlate? at 6 Mins, 50 seconds he uses a watt meter to measure the inverters output. I can't get that to work for me.

Thank you for this. Can't see the forest through the trees just yet but glad to know there a multiple ways to check.

Thanks for the reply! The Micro inverter senses the grid just fine by connecting to the female end of a 50 foot extension cord to a GFI exterior plug on my house. I didn't know if the watt meter would work but wanted some way to see how many watts output of the 100 from the panels I'm actually...

Thank you. What makes the Kill a Watt any different than this? I don't really want to spend any more because my ROI is about 2 years so far.

I have a Y&H 120 watt grid tie micro inverter that's installed and working. I tried to put my watt meter inline to see how much output I am actually getting but it just says overload. It's basically going the wrong direction. Maybe I can use my multimeter to measure ac amps? It would just be...