[RE-wrenches] Generator backfeeding enphase?

[Kirk Herander]

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:re-wrenches-bounces at lists.re-wrenches.org] 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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