1. NEC 690.18 was removed from the Code in 2017 and an "opaque covering" for Installation and Service of an Array.
2. Light to the underside of the array is still an issue too for a ground-mount - albedo. Try this in sunlight on a windy day? :) I'd also suggest "treating everything as if it were hot." Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037 https://www.youracclaim.com/badges/a54a49a9-31cb-4f52-b35f-9 d7c90630bb9/public_url Adjunct Professor California Solar Contractor License #00833782 C46, D56, D31, C-7 Solar, Trenching, Pole Installation & Maintenance, Instrumentation Underwriters Laboratories (UL) Certified PV Installer #17, OSHA 30 OSHA-Authorized Construction Trainer #32-0105338 CompTIA Certified Technical Classroom Trainer (CTT+) #T3NSZCNBBKB4QTQG Registered North American Board of Certified Energy Practioners (NABCEP) Continuing Education (CE) Provider On Dec 23, 2017 11:52 AM, <jry...@dtisolar.com> wrote: I always thought this was a waste of time, waste of materials, and gives a false sense of security. I have had the crap shocked out of me while trying to hurry and finish up string connections in a combiner box when it was almost dark and could barely see so now I never assume near darkness means it’s safe on higher voltage strings. Was trying to avoid having to make another trip to finish. These days we make sure positive leg of each string is blocked off at combiner before starting the module mounting and connecting as we go. This way we always know to treat everything as if it’s hot. Sent from my iPad Jeff Yago DTI Solar. Inc. 804-457-9566 jry...@dtisolar.com > On Dec 23, 2017, at 11:04 AM, Jay <jay.pe...@gmail.com> wrote: > > Hi All, happy holidays. > > I’m looking for any studies or data about the dangers of “covering modules” and assuming they are safe to work on. > > I have a group that I think is going to need some harder data than me telling them it’s not safe. > > Thanks > > Jay > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.or g/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.or g/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
