Equalization voltage is how we have interpreted this. It clearly does not say nominal.
-----Original Message----- From: "Bob Clark" <bcl...@solar-wind.us> Sent: 6/10/2013 23:08 To: "'RE-Wrenches'" <re-wrenches@lists.re-wrenches.org> Subject: [RE-wrenches] NEC 690.55 - "maximum operating voltage" RE_Wrenches: Can someone tell me what is being referred to in NEC 690.55 when it says "Photovoltaic power systems employing energy storage shall also be marked with the "maximum operating voltage, . . ." ? We have an off-grid system which employs energy storage [i.e.; batteries]; so I need to know what exactly is referred to when this section mentions "maximum operating voltage" so I can put it on a sign. Bob Clark SolarWind Energy Systems, LLC
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