[RE-wrenches] Label Durability

[Jesse Dahl]

That kinda seals the deal on Sharpies. I found Pica ink markers to be better than sharpies anyway. 



Sent from my iPhone

> On Jun 29, 2020, at 7:48 PM, Martin Herzfeld <findsolar at herzfeld.org> wrote:
> 
> 
> 
> A.  Attached are samples of field applied hazard marking (Photos) on the topic of durability and handwritten. 
> 
> B.  2017 NEC 110.21(B)(2) Field-Applied Hazard Markings. Where caution, warning, or danger signs or labels are required by this Code, the labels shall meet the following requirements: 
> 
>  -  The label shall be permanently affixed to the equipment or wiring method and shall not be handwritten
> -  Exception to (2): Portions of labels or markings that are variable, or that could be subject to changes, shall be permitted to be handwritten and shall be legible.
> 
> In other words, are the portions of labels subject to changes? :)
> 
> All the best, 
> 
> Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer ™ for Photovoltaics (PV) Installation Professional #IREC 10037
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>> On Sat, Jun 27, 2020, 4:18 PM Ray <ray at solarray.com> wrote:
>> Sharpie fades pretty fast in the sun (1 year?).  Paint pen would do 
>> better, but can be messy.
>> 
>> Ray Walters
>> Remote Solar
>> 303 505-8760
>> 
>> On 6/27/20 5:06 PM, Jesse Dahl wrote:
>> > Did you use a sharpie on the box? I wonder how a sharpie or PICA marker would hold up for 10 years.
>> >
>> > It’s an awesome test though. I love it.
>> >
>> > Jesse
>> >
>> > Sent from my iPhone
>> >
>> >> On Jun 27, 2020, at 12:59 PM, Corey Shalanski <coresolar at gmail.com> wrote:
>> >>
>> >> 
>> >> About ten years ago we set up a test wall of sorts at our company headquarters in New Orleans. The purpose was to monitor the durability/degradation of various materials - including warning labels. We tried to attach a variety of label types: plastic trophy plaques, vinyl stickers, labelmaker tape. We also used various adhesives: sticker OEM adhesive, double-sided tape, "Gorilla Glue", PVC cement. It should be noted that the wall faced southeast and was uncovered, so that it received daily full sun and was exposed to all other environmental conditions (rain, etc).
>> >>
>> >> The results today do not look good (attached photo). None of these products would appear to meet the "sufficient durability" requirements of NEC 110.21(B).
>> >>
>> >> I am curious if anyone is aware of any similar (but more formalized) product testing? and can share results?
>> >>
>> >> Has anyone found a warning label product that performs particularly well over time?
>> >>
>> >> --
>> >> Corey Shalanski
>> >> <Durability Test Wall.jpg>
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