[RE-wrenches] Enphase and oversizing

Marco Mangelsdorf marco at pvthawaii.com
Sat Jan 15 12:58:45 PST 2011


To those of you installing Enphases.

 

Other than their 210 only working with Sanyo and SunPower modules, the vast
majority of other mods only work with the Enphase 190.

 

Question: what's the max size module that you're comfortable using with the
Enphase 190?

 

In there here parts I'm seeing competitors pairing the Enphase 190 with
modules in the 230+ watt range.  Some are even pairing the 190 with the
SolarWorld 245.  Talk about wasting the customer's money..

 

This strikes me as a bad design that essentially has the homeowner throwing
away some of his/her money on unused PV horsepower.  Here in the tropics,
where the edge-of-cloud effect can be seen on a regular basis, I see DC
nameplate AND higher coming out on the AC side of my systems.

 

I'm wondering where others are on this question of oversizing.

 

Thanks,

marco

 

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