Anyone have something similar that is non combustible, and that one can open and inspect/make changes?
Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail [email protected] [2] text 209 813 0060 On Sun, 26 Jul 2020 19:48:59 -0400, Jeremy Coxon wrote: First time posting so I hope I'm doing this right. We have been using a product called RayTray on projects in the 20-100kW range for a few years now. It's basically a white plastic (RPVC) extrusion tray with a cap that builds out quick and does a nice job of protecting wires from sunlight. Jeremy Coxon NABCEP Certified MWBE SunWind Power Sent from my iPhone On Jul 25, 2020, at 7:23 PM, Jerry Shafer wrote: Wrenches Looking at residential installations l do not see cable trays becoming common place in part do to cost and visual appearance. Commercial is where trays work for home runs, feeders to big commercial combines is common place. But they are not pretty by any stretch. I have used aluminum unistrut as trays on smaller arrays using the crosses and T's then their covers Jerry On Fri, Jul 24, 2020, 11:00 PM Corey Shalanski wrote: Wrenches, I noticed a couple good threads ("Cable tray" / "PV Wiring methods") about this topic back in 2013, but I haven't seen much discussion since then. Given some of the advances in PV equipment since then (improved ground-fault protection, arc-fault circuit protection, rapid shutdown), I am curious about current attitudes toward using metallic conduit/cable tray on rooftops. I am primarily interested in hearing about flat commercial rooftops but imagine some of the same conventions may apply for residential rooftops. What are you using for long (or short) dc circuit runs on rooftops? Is cable tray still considered safer? Are there situations where conduit may be merited? If so, is RMC favored over EMT? Do best practices change when considering ac circuits (rather than dc)? Back in 2013 Bill Brooks said that PV installers are the "crazy people" installing conduit on rooftops, and he prophesied that using cable tray on roofs would "become common practice soon." Where do we stand now? -- Corey Shalanski Jah Light Solar Portland, Jamaica _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] [4] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [5] List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [6] List rules & etiquette: www.re-wrenches.org/etiquette.htm [7] Check out or update participant bios: www.members.re-wrenches.org [8] Links: ------ [1] http://members.sti.net/offgridsolar/ [2] mailto:[email protected] [3] mailto:[email protected] [4] mailto:[email protected] [5] http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org [6] http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org [7] http://www.re-wrenches.org/etiquette.htm [8] http://www.members.re-wrenches.org
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