[RE-wrenches] Covering modules

[Martin Herzfeld]

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
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On Dec 23, 2017 11:52 AM, <jryago at 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
jryago at dtisolar.com


> On Dec 23, 2017, at 11:04 AM, Jay <jay.peltz at 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
>
>
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