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stevehull · 11-23-13, 06:37 AM

Pinball,

You spoke of your 111% actual PV output compared to what PVWatts predicted. Was this using the performance factor of 86% vs. the default of 77%?

Secondly, what diameter (gauge) wire did you bring down from the Enphase output to your electrical panel? The smaller the wire, the greater the resistance loss, but fatter wire is more expensive. Do you have a suggestion on that trade off?

Wire is one of those things that you put in once . . . . so your thoughts on the balance of efficiency vs. cost are highly appreciated.

Vern (and others), feel free to chime in.

Steve

11-23-13, 06:37 AM	#129
stevehull Steve Hull Join Date: Dec 2012 Location: hilly, tree covered Arcadia, OK USA Posts: 826 Thanks: 241 Thanked 165 Times in 123 Posts	Pinball, You spoke of your 111% actual PV output compared to what PVWatts predicted. Was this using the performance factor of 86% vs. the default of 77%? Secondly, what diameter (gauge) wire did you bring down from the Enphase output to your electrical panel? The smaller the wire, the greater the resistance loss, but fatter wire is more expensive. Do you have a suggestion on that trade off? Wire is one of those things that you put in once . . . . so your thoughts on the balance of efficiency vs. cost are highly appreciated. Vern (and others), feel free to chime in. Steve __________________ consulting on geothermal heating/cooling & rational energy use since 1990 Last edited by stevehull; 11-23-13 at 08:13 AM..