techman posted:the zw is etl listed
Both marks demonstrate that the product that bears it has met the minimum requirements of widely accepted product safety standards as determined through the independent testing of a Nationally Recognized Testing Laboratory (NRTL). And, as part of that testing regimen, the product manufacturer has agreed to periodic follow-up inspections to verify continued compliance. So, the only real difference between the marks is in the service, and services, of the testing laboratory behind them. It's here that ITS ETL SEMKO's clients enjoy the real differences between UL and ETL. ETL custom-tailored testing, quick turnarounds, and flexible work methods are literally changing the face of the industry by promoting an environment where the testing lab and product manufacturer work more collaboratively - bringing products to market more quickly, more smoothly, and more cost-effectively than ever before.
At first I thought maybe you worked for ETL, but this just copy and pasted from from a web search, right?: http://www.crossbrothersinc.com/aboutetl.htm (about 3/4 way down that page).
The ZW-L was tested by ETL to meet the UL Standard 697. (I believe this is stamped on the bottom of the unit). Yes ETL is a NRTL and their testing is just as tough as UL. UL creates standards and tests (and approves) products to meet those standards and ETL tests products to meet criteria set forth by UL. ETL is a little more than just some vague voluntary accreditation agency.
While the ZW-L is not UL listed, I'm sure it would pass if they put it through the paces.
