[RE-wrenches] NEC 690.55 - "maximum operating voltage"

[jay peltz]

HI All,

I mean as its worded, it would also be 240vac?

jay 

peltz power


On Jun 11, 2013, at 7:30 AM, Eric.Bentsen at schneider-electric.com wrote:

> 
> Hi Bob, 
> I would rather it be worded "maximum normal operating voltage". 
> Maximum operating voltage would be the recommended BULK voltage for the battery type being utilized. 
> Equalization is a maintenance procedure, which is why it calls for separate listing. 
> It must also include polarity of grounded conductor. 
> 
> Eric
> _____________________________________________________________________________________ 
> 
> Eric Bentsen  |   Schneider Electric   |  Solar Business  |   UNITED STATES  |   Technical Support Representative 
> Phone: +(650) 351-8237 ext. 001#  |   
> Email: eric.bentsen at schneider-electric.com  |   Site: www.schneider-electric.com/solar  |   Address: 250 South Vasco Rd., Livermore, CA 94551 
> 
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> *** Please consider the environment before printing this e-mail 
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> 
> 
> From:	"Bob Clark" <bclark at solar-wind.us>
> To:	"'RE-Wrenches'" <re-wrenches at lists.re-wrenches.org>
> Date:	06/10/2013 08:08 PM
> Subject:	[RE-wrenches] NEC 690.55 - "maximum operating voltage"
> Sent by:	re-wrenches-bounces at lists.re-wrenches.org
> 
> 
> 
> 
> 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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