EEVblog #1082 - What Do Compliance Logos Mean?

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What does the UL type approval compliance logo on consumer products mean?
What about TUV, ETL, GS, CCC and other marks?
Dave breaks down safety standards and compliance marks.

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Getting a tesla coil alarm clock through all those certifications would be a nightmare...

helmutkohl
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I think just labeling your product with "Use at own risk" is much cheaper

Rightclick
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When you see the UL logo it doesn't ALWAYS mean that this product has been tested by UL but that it has been built according to the UL standards. I'm a project manager for an electrical engineering contractor in Canada and we certify our product CSA (C22.2 #14-13) or UL (508), depending on the customer's requests and we self certify all of our products, of course in compliance with the standards in use. We usually get 4 surprise inspection of our products but that's about it.

panzerschrekIOI
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Some (useless?) trivia for the non-Geman speaking:
"Geprüfte Sicherheit" is just German for "tested safety"
TÜV is short for "Technischer Überwachungsverein" which translates to "Technical Inspection Club" (or "association" as Wikipedia calls it). There are actually a number of those "clubs" in Germany which have split the different regions up amongst them.
The TÜV is somewhat (in)famous for the mandatory car safety inspections, they used to have the monopoly on doing those inspections so in a car context "TÜV" has become a synonym for the safety inspection. (As in: "Used car for sale, 1.5 years of TÜV".)

DrAHorn
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UL was formed over 100 years ago by the insurance companies to help with fire prevention. Back then, fires were started by bad wiring and the like, and the insurance companies didn't want to pay the $$$ to people who had shoddy products. They formed UL to "list" things that were "safe" and thus insurable. Over the years the UL business has grown but largely does similar work. Various UL things are listed, like fire ratings for safes, and such things as light fixtures. UL is a non-profit entity which is bound by the terms of its trust. Some of this is done to prevent conflicts. I got some of this information from a guy who worked there. They have a local facility here in sillycon valley.

Herby-
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Love the crusty old carpenter's square that Intertek used in those photos

pauldzim
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Hi - thanks for making this video! It really is clear and well explained. Regulatory compliance for electronic devices gets overlooked. I work for a 3rd party lab and what I've seen are manufacturers leaving EMC testing or Electrical Product Safety testing & certification to the last minute. Some of them had to re-design everything because they were not aware of these compliance requirements per region and failed an evaluation after the first try.

gracefilledsoul
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Awesome to see you talking about the certification logos! As part of my job, I design and build UL 508a control panels, so I am all for more people learning about what it actually represents. It's kinda cool to have a roll of UL labels and being authorized to place them on panels I build.

gothroachkinski
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TÜV is not just German - Lots of non-German manufacturers in Europe will still use TÜV because they're the UL equivalent in the region (they're the giant in the field) and European standards are normalised like AU/NZ or US/CA are in order to simplify trade. No wonder UL are trying to enter the market - I've never see an UL logo with "EU" on it on a European product in the wild.

benespection
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This relates to a project I started years ago and really want to get back to. I was so fascinated by all those symbols I started tracking them down, and found dozens of them from various countries around the world. Some were even obsolete but I was able to find them anyway. If I get the project done I'll post it up on the blog for everyone's reference.

Skyfox
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To clarify, UL is separated into two entities. The non-profit makes the standards. The for-profit does the testing.

CrzyMan_Personal
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Thanks for sharing Dave. Biting my own nails on a product cert right now. This'll be helpful.

AmRadPodcast
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I used to work for UL, this video brings back fun memories!

drumbum
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Note some large corporations like to get multiple redundant certification marks on their products even though the marks mean the same thing. It may sound silly but there are reasons they do this:

1) Large OEM manufacturers sometimes sell their products to other companies that mandate a very specific mark despite the fact another angency could have done the same testing to the same standards.

2) Large companies selling millions of a product often get multiple redundant marks like cULus and cCSAus because it takes more liability off of their backs in the event something does happen.

3) It's often not that much more expensive to get the second or third redundant mark because the other agencies will often certify the product by just reviewing paperwork from the first recognized testing lab then doing minimal additional testing.

MrIneffable
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What is the ess mark in top right of the dell monitor? I mean the epsilon integral s in a circle at 17:52?

kubeek
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You say ask a testing house. But they have a vested interest to sell you as many tests as possible. How do you determine what tests you actually NEED?

jam
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When they do the tests, do they test them to destruction, or do they just apply some minimum voltages/impacts/etc? It would be fascinating to know how much voltage it takes to explode/ignite a typical multimeter, particularly one with a list of approvals.

douggale
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Hi Dave! The first stamp in the second row ("PCT"-like) is a RossStandard stamp (from Russian State Standard). Just if you were curious.

ScramblerUSA
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Speaking of failing the tests, I remember the old round red and yellow UL stickers that where labeled "Underwriters Laboratory Re-examination Service Certified" often found on radios and televisions in the 50s and early 60s. Why they chose to point it out is unknown but it was a notice that the item had failed in its initial testing and was kind of an embarrassment for whoever had to sell that item.

RuneTheFirst
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By the UL mark, E135742 is the UL file number for that specific product

CrzyMan_Personal