Cooling 8 Sunny Boys [RE-wrenches]

[John Berdner]

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JeffC / Wrenches:
 
Just one small point on the "shock hazard" or lack thereof with a 12V
transformer.
Ideally (from a liability standpoint) the 12 Vdc supply should be a
Listed, Class 2 transformer.
 
Best Regards,
 
John Berdner

>>> clrwater at earthlink.net 4/7/2004 04:27:02 PM >>>
Hi Alan,

Thanks - if I use such a thermostat on a 12 V PV input there should
be no problem with the exposed terminals of such a unit - it wouldn't
be code (or safe!) on a 120/240 > 12 V power supply input without
some sort of enclosure. But I'm leaning toward PV powered anyway if
I can keep the cost down so that may just work.

Thanks for the reference I appreciate it!

Jeff C.

>
>How about a simple adjustable thermal snap switch, such as Grainger
part
>number 4E116?
>Allan at PosE
>
>----- Original Message -----
>From: "Jeff Clearwater" < clrwater at earthlink.net >
>
>I'd still like to do it with a heat sink mountable thermostat that
>could handle the 1 amp 120VAC power supply input or the 12 V PV input
>to all fans (6 amps DC). Any ideas on that? What's the one used in
>the Sunny Breeze rated at amperage wise?

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Jeff Clearwater
Village Power Design Associates
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jeffc at villagepower.com 
Sustainable Energy & Water Solutions for Home & Village

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