[RE-wrenches] DC disconnects

[Max Balchowsky]

We've been successful (at least with PVPowered inverters) in having the AC/DC disconnects in the inverter recognized as the required lockable disc in some jurisdictions. The PVPowered  on, off, AC, DC switch is lockable......... Just keep it close to the utility meter.




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From: Rebecca Lundberg <Rebecca.Lundberg at powerfullygreen.com>
To: re-wrenches at lists.re-wrenches.org
Sent: Mon, January 11, 2010 3:54:52 PM
Subject: Re: [RE-wrenches] DC disconnects

In response to this: "Luckily the latest inverters from most manufacturers take care of this need with their included/integrated but seperated fused DC disconnects....." 

I actually wish the integrated disconnects for the new inverters were an option when purchasing, i.e. when I order the inverter it comes with it automatically, and is therefore reflected in the price. Where I live the AHJ and utlities are requiring the handled-lockable-'regular' AC and DC disconnects regardless of whether or not there is a UL-listed integrated disconnect with the inverter. Alas, for me it is redundancy and extra cost for materials and electrical work either way. I can either have the electrician wire it up and pay their cost, or I can leave the integrated inverter out (when it is listed as optional in the installation manual) but now I have a non-returnable part sitting around, which is wasteful too. Alas, the best solution is more solar so everyone becomes more familiar with it!

Keep Shining!
Rebecca Lundberg
Powerfully Green, Minnesota
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