I posed this question to Solaredge last year. Basically the (Solaredge at least) inverter will not connect unless the generator frequency is within normal grid tolerance, which would be rare with a typical house generator. But if it did connect, and the generator kw were less than the inverter kw, it could potentially turn the alternator into a motor, spinning it backwards.
Kirk Herander Owner|Principal, VT Solar, LLC Proven PV provider since 1991 www.vermontsolarnow.com dba Vermont Solar Engineering NABCEPTM 2003 Inaugural Certificant VT RE Incentive Program Partner 802.863.1202 From: RE-wrenches [mailto:[email protected]] On Behalf Of Howie Michaelson Sent: Tuesday, October 20, 2015 12:01 PM To: RE-wrenches Subject: [RE-wrenches] Generator backfeeding enphase? Does anyone think that there is no issue with having enphase potentially backfeeding a backup generator? We almost always will tie in upstream of a generator transfer switch, but a competitor is telling clients with an enphase system there is no concern. Am I missing something? Thanks, Howie Howie Michaelson NABCEP Certified Solar PV Installer™ Catamount Solar Renewable Energy Systems Sales and Service VT Solar Electric Incentive Partner http://www.CatamountSolar.com 802-272-0004
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