From: Peter Parrish <peter.parr...@calsolareng.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Monday, August 24, 2009 1:11:49 PM
Subject: [RE-wrenches] raintite box mounting angle
Max,
A cautionary tale. We used those puppies for a while until we had a call back from a customer with a ground fault / off line condition. We found that the box had warped, the seal rendered ineffective and the splices sitting in 0. 5” of water. After thinking about it, we decided that the 140+ deg F summer roof temperatures probably caused the plastic to warp under thermal stress. They probably would work just fine off the roof, but I can’t personally vouch for them.
- Peter
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parr...@calsolareng.com
Ph 323-258-8883, Mobile 323-839-6108, Fax
323-258-8885
From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Max Balchowsky
Sent: Monday, August 24, 2009 12:48 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] raintite box mounting angle
We've been using the 6x6x4 plastic boxes with a gasket (electrical section of most home depot stores)- mount them on their side at the edge of the array. They are rated for electrical wiring and are water proof and have been accepted and passed by every electrical inspector we've had over the last few years. They are used alot by landscape contractors for j-boxes in the ground.
Max Balchowsky
SEE Systems
760-403-6810
From: Bill Brooks <billbroo...@yahoo.com>
To: k...@vtsolar.com; RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Monday, August 24, 2009 9:08:34 AM
Subject: Re: [RE-wrenches] raintite box mounting angle
Kirk,
I’m fairly confident that if the manufacturer does not specify an angle for NEMA 3R (rainproof) that the default is vertical. In special cases (e.g. Outback PSPV), the NEMA 3R tests are requested at an angle, but this is fairly rare. Upshot is that NEMA 3R boxes normally cannot be mounted in the plane of the roof, while NEMA 4 and up can be mounted in the roof plane since many of these boxes can be mounted from vertical to horizontal.
Bill.
From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirk Herander, VSE
Sent: Monday, August 24, 2009 8:26 AM
To: 'RE-wrenches'
Subject: [RE-wrenches] raintite box mounting angle
Hello,
Can anyone give a recommendation for a minimum mounting angle of a raintite box? Ideally 90 degrees, but in this case I may be forced to mount it at the same angle as the panels – about 25 degrees, mounted off the roof about 6 inches. I don’t think there is any reference in the NEC to this. It will be off the roof about 6 inches in a mild climate, where they only get about 20 inches of snow a year. Thanks.
Kirk Herander
Vermont Solar Engineering
802.863.1202
NABCEP(tm) Certified Solar Installer
NYSERDA-eligible Installer
VT Solar Incentive Program Partner
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