I think it would come down to the manufacturers installation instructions (to accompany the UL listing). In their absence, I don't know. As a case in point, there is one DC combiner box that MUST be mounted vertically and at least one other that MAY be mounted at an angle other than vertical. Both were otherwise listed 3R. I don't remember who was who (this was a couple of years ago), but the manus were very specific.
- 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 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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