Comments on: Enphase M-190 Microverters http://www.sun-volt.com/blog/2009/11/09/enphase-m-190-microverters/ earth, the final frontier Wed, 10 Mar 2010 17:42:23 -0500 http://wordpress.org/?v=2.9.1 hourly 1 By: Eric http://www.sun-volt.com/blog/2009/11/09/enphase-m-190-microverters/comment-page-1/#comment-122 Eric Mon, 14 Dec 2009 17:15:44 +0000 http://www.sun-volt.com/blog/?p=465#comment-122 Interesting. Seattle City Light has no problem with them. They (and We as installers) like the idea of the inverters automatically shutting down on the roof when grid voltage is down. Of course we install an accessible disconnect for them as well. I'd like to see the testing procedure you come up with. Interesting. Seattle City Light has no problem with them. They (and We as installers) like the idea of the inverters automatically shutting down on the roof when grid voltage is down. Of course we install an accessible disconnect for them as well. I’d like to see the testing procedure you come up with.

]]> By: Paul http://www.sun-volt.com/blog/2009/11/09/enphase-m-190-microverters/comment-page-1/#comment-121 Paul Fri, 11 Dec 2009 22:27:18 +0000 http://www.sun-volt.com/blog/?p=465#comment-121 Hey Eric, I am working on a 5 KW system this weekend using the M210 inverters with the Sanyo 215N panels. Should be fun. One thing that I have run into is the utility company doesn't like them. Each time I do a system test and certification, I go round and round with the engineer about leakage current vs. monitoring current. I am working out a standardized acceptance testing procedure for New York State. Hey Eric,

I am working on a 5 KW system this weekend using the M210 inverters with the Sanyo 215N panels. Should be fun. One thing that I have run into is the utility company doesn’t like them. Each time I do a system test and certification, I go round and round with the engineer about leakage current vs. monitoring current. I am working out a standardized acceptance testing procedure for New York State.

]]> By: Eric http://www.sun-volt.com/blog/2009/11/09/enphase-m-190-microverters/comment-page-1/#comment-120 Eric Fri, 11 Dec 2009 22:02:08 +0000 http://www.sun-volt.com/blog/?p=465#comment-120 We just installed 8.4 kW of M-190's, 3kW more this weekend. I like them to an extent: 1. The module-by-module monitoring offered by Enphase is GREAT! 2. The shade-control factors offered by MI's in general is GREAT! 3. Don't use these with Clicksys Racking unless you install the sliders for your midclips FIRST! (Jeez we learned that lesson the $hard$ way!!) 4. They make sense financially up to about the 5kW level. Then, the cost ($160 ea) outweighs the benefits of a central inverter in my mind. ($4k for MI's vs. ~ $3.5k for a central inverter) All in all, our customers are very stoked on the visual monitoring, and I particularly like the email notifications. Starts the warranty process automatically!!~ Solar Epiphany We just installed 8.4 kW of M-190’s, 3kW more this weekend. I like them to an extent:

1. The module-by-module monitoring offered by Enphase is GREAT!
2. The shade-control factors offered by MI’s in general is GREAT!
3. Don’t use these with Clicksys Racking unless you install the sliders for your midclips FIRST! (Jeez we learned that lesson the $hard$ way!!)
4. They make sense financially up to about the 5kW level. Then, the cost ($160 ea) outweighs the benefits of a central inverter in my mind. ($4k for MI’s vs. ~ $3.5k for a central inverter)

All in all, our customers are very stoked on the visual monitoring, and I particularly like the email notifications. Starts the warranty process automatically!!~

Solar Epiphany

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