[RE-wrenches] Label Durability

[Corey Shalanski]

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
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