Discussion about the Power System PV Combiner (PSPV)
5 posts • Page 1 of 1
- Forum Emperor
- Posts: 1523
- Joined: Mon Jun 09, 2003 11:01 pm
- My RE system: SMA Sunny Boy 2500 with eight Mobil Solar Ra 180 modules
- Location: Cove, Oregon
The OutBack PSPV combiner box has a Type 3R NEMA rating for slopes as gentle as 3-in-12, or about 14 degrees. HereÔÇÖs the NEMA definition of a Type 3R enclosure:
Jim / crewzer
The UL definition is similar. The CSA definition adds ÔÇ£snowÔÇØ to the ÔÇ£degree of protectionÔÇØ list.Enclosures are intended for outdoor use primarily to provide a degree of protection against falling rain and sleet; undamaged by the formation of ice on the enclosure.
Jim / crewzer
090805 System Configuration: 966 W STC (849 W CEC PTC) 48V PV array, FM80, 24V x 400 Ah AGM battery bank, FX2524T w/ BTS, Hub-4 & Mate; Link-10 w/ BTS, & E-Panel.
I installed a PSPV here at my cottage in Colorado, too, last year. I didn't put it on the roof, but that makes no difference. I installed mine on a post, vertically. I assume from your concern you may be installing yours flat on the roof. As the other posters have stated already, the box is not "waterproof." However, unless you have liquid water rising to the level of the box, I don't see any way you will have a problem. I have conduit attached to my box, several runs of it, and I simply ran a bead of silicone around the attachments at the box. Mine has been buried beneath a couple feet of snow with no contamination inside the box as the snow melted. If it's lying flat, or lying on your roof at the roof's angle, you will likely get a bit of water running into the box from the upper margin of the door. If you set the box vertically on your roof, problem solved.