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benn, I'm not aware of any listed battery vents. Given the cost of listing, and the size of the market, it's unlikely there ever will be. Wanna pay $300 for a listed vent? I have never had an issue with an inspector about them. You might consider a standard AC squirrel cage fan from Grainger or some such, controlled by a 12V-coil relay on an FM60 or similar controller's auxiliary vent fan circuit. It would then only run when the batteries are nearly full. Other ideas? Try the approach that if there is no listed product, the inspector is allowed to allow a reasonable alternative. Most likely the batteries are also unlisted - compared to that, the vent fan is minor. I use intake vents; otherwise how can the exhaust fan work if the box is well sealed? The objective is to draw the hydrogen gas up and out, not just suck on it while it accumulates inside the box. Allan Sindelar On 2/25/2011 4:55 PM, benn kilburn wrote: Good Afternoon Wrenches, |
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