<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">That kinda seals the deal on Sharpies. I found Pica ink markers to be better than sharpies anyway. <div><br></div><div><br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Jun 29, 2020, at 7:48 PM, Martin Herzfeld <findsolar@herzfeld.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="auto"><div dir="auto"><br></div><div>A. Attached are samples of field applied hazard marking (Photos) on the topic of durability and handwritten. </div><div dir="auto"><br></div><div dir="auto">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: </div><div dir="auto"><br></div><div dir="auto"> - The label shall be permanently affixed to the equipment or wiring method and <b>shall not be handwritten</b></div><div dir="auto"><div dir="auto" style="font-family:sans-serif"><ol style="list-style:none;padding-left:0px;display:table;border-collapse:separate;border-spacing:6px 2px"><li style="display:table-row"><div style="display:table-cell"><p style="margin:0px">- Exception to (2): Portions of labels or markings that are variable, or that could be <b>subject to changes, shall be permitted to be handwritten</b> and shall be legible.</p><p style="margin:0px"><br></p><p style="margin:0px">In other words, are the portions of labels subject to changes? :)</p></div></li></ol></div></div><div dir="auto"><div style="display:table-cell" dir="auto"></div><div style="display:table-cell" dir="auto"><p style="margin:0px"><br></p></div><div data-smartmail="gmail_signature" dir="auto">All the best, <br><br>Martin Herzfeld, Interstate Renewable Energy Council (IREC) Certified Master Trainer \u2122 for Photovoltaics (PV) Installation Professional #IREC 10037<br>Contract Training Provider (CTP)<br>Adjunct Professor, Energy<br><br>California Solar & Electrical Contractor License #00833782 C46, C10, D56, D31, C-7<br>Solar, Electrical, Trenching, Pole Installation & Maintenance, Instrumentation<br><br>Contract Solar (PV) Technical Inspector - 3rd Party Inspections <br>Underwriters Laboratories (UL) Certified PV Installer #17, OSHA 30<br>OSHA-Authorized Construction Trainer #32-0105338<br>CompTIA Certified Technical Classroom Trainer (CTT+) #T3NSZCNBBKB4QTQG<br><br>* Professional Member, International Association of Electrical Inspectors #7035507 - Since 2006<br>* Accredited and Registered North American Board of Certified Energy Practitioners (NABCEP) Continuing Education (CE) Training Provider<br><br></div><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Sat, Jun 27, 2020, 4:18 PM Ray <<a href="mailto:ray@solarray.com">ray@solarray.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Sharpie fades pretty fast in the sun (1 year?). Paint pen would do <br>
better, but can be messy.<br>
<br>
Ray Walters<br>
Remote Solar<br>
303 505-8760<br>
<br>
On 6/27/20 5:06 PM, Jesse Dahl wrote:<br>
> Did you use a sharpie on the box? I wonder how a sharpie or PICA marker would hold up for 10 years.<br>
><br>
> It\u2019s an awesome test though. I love it.<br>
><br>
> Jesse<br>
><br>
> Sent from my iPhone<br>
><br>
>> On Jun 27, 2020, at 12:59 PM, Corey Shalanski <<a href="mailto:coresolar@gmail.com" target="_blank" rel="noreferrer">coresolar@gmail.com</a>> wrote:<br>
>><br>
>> \ufeff<br>
>> 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).<br>
>><br>
>> 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).<br>
>><br>
>> I am curious if anyone is aware of any similar (but more formalized) product testing? and can share results?<br>
>><br>
>> Has anyone found a warning label product that performs particularly well over time?<br>
>><br>
>> --<br>
>> Corey Shalanski<br>
>> <Durability Test Wall.jpg><br>
>> _______________________________________________<br>
>> List sponsored by Redwood Alliance<br>
>><br>
>> List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br>
>><br>
>> Change listserver email address & settings:<br>
>> <a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer noreferrer" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
>><br>
>> List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" rel="noreferrer noreferrer" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br>
>><br>
>> List rules & etiquette:<br>
>> <a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer noreferrer" target="_blank">www.re-wrenches.org/etiquette.htm</a><br>
>><br>
>> Check out or update participant bios:<br>
>> <a href="http://www.members.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">www.members.re-wrenches.org</a><br>
>><br>
> _______________________________________________<br>
> List sponsored by Redwood Alliance<br>
><br>
> List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br>
><br>
> Change listserver email address & settings:<br>
> <a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer noreferrer" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
><br>
> List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" rel="noreferrer noreferrer" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br>
><br>
> List rules & etiquette:<br>
> <a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer noreferrer" target="_blank">www.re-wrenches.org/etiquette.htm</a><br>
><br>
> Check out or update participant bios:<br>
> <a href="http://www.members.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">www.members.re-wrenches.org</a><br>
><br>
_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer noreferrer" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" rel="noreferrer noreferrer" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer noreferrer" target="_blank">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">www.members.re-wrenches.org</a><br>
<br>
</blockquote></div></div></div>
<div><20200629_173840.jpg></div><span>_______________________________________________</span><br><span>List sponsored by Redwood Alliance</span><br><span></span><br><span>List Address: RE-wrenches@lists.re-wrenches.org</span><br><span></span><br><span>Change listserver email address & settings:</span><br><span>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</span><br><span></span><br><span>List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</span><br><span></span><br><span>List rules & etiquette:</span><br><span>www.re-wrenches.org/etiquette.htm</span><br><span></span><br><span>Check out or update participant bios:</span><br><span>www.members.re-wrenches.org</span><br><span></span><br></div></blockquote></div></body></html>