Hey All,
I have gone around the barn several times with the electrician & the owner on this & come up with several ideas but none have managed to hit the mark. Ok for those of you in the low country there are people that can afford to, & do melt snow in driveways/walkways with electric mats at least for the first couple of years till they get tired of the power bills and stop melting snow with the electricity and resort to paying for snow removal or actually do it themselves. Un fortunately I cannot fast forward my client there. I have a client with 2 roofs that can hold 7KW of PV each. 14KW. The Goal is to support the house with grid tied PV & backup battery power, and address the large snowmelt & summer AC loads. This was not thought out in the beginning of the design & construction process so at this point it is an addon. Currently there is 1 - 400 A service & they are looking at a second 400A service. The second service would address snow melt in winter & AC in summer We are looking at a SolarEdge 11.6KW inverter with 20 KW of battery backup. There is a hot tub - electric, AC in the summer with 2 condensers, several refrigerators, etc.. The snow melt pulls 200 amps so it exceeds the 160 amps available on a 200 amp service. There is a 400 amp service on the house now. 200 amps x .8 = 160 amp for the house. They are looking at a second 400 amp service to handle the snow melt In the winter & the AC in the summer. I can down size 1 - 200Amp main to 150A and tie in the 11.6KW SE inverter GT feed OR install 2 - 7.6KW inverters to each of 2 - 200 A mains @ 40 A each on 1 meter, OR feed each meter the production of each 7KW array thru a 7.6 KW SE inverter. Short of an 800 amp meter/service & if possible I & the client would like to keep all 14 KW on the one meter & I say this because when they get tired of the cost of running the snow melt the full PV capacity could be directed at the house, hot tub, AC. If you have addressed this kind of out of control & have thoughts I would love to hear your thoughts & suggestions. Dana Orzel Great Solar Works, Inc. C - 208.721.7003 d...@solarwork.com Idaho Contractor - # 028765 Idaho PV # 028374 NABCEP # 051112-136 www.greatsolarworks.com <http://www.greatsolarworks.com/> "Responsible Technologies for Responsible People since 1988" P Please consider the environment before printing this email.
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