super_ee_dave

Yes. Intertek Testing Services (Intertek ETL SEMCO) does all our LED scoreboards, indoor and outdoor. We used to be a customer of UL for twenty-plus years until I switched two years ago. We comply with UL48 (Electric Signs) and UL950/EN60950 (Safety for Information Technology Equipment.) We're in Houston, and they travelled out of the Richardson, Texas office, so it's no trouble to get stuff tested. As a manufacturer, we get quarterly follow-up inspections (passed every one!) and they are competitively-priced. They provide timely answers to my questions concerning the regulatory impact of proposed legislation, questions about special signs and installations, or questions involving the necesssary compliance testing for future projects. -----begin personal rant----- What I like about them vs. UL is that they tested all our stuff in full compliance with in the relevant UL/EN specs. UL, on the other hand, was quick to expand their sphere of influence into minutiae outside the UL specs as, in my opinion, a business strategy to generate maximum testing and follow-up inspection revenue from their existing customer base. In other words, I was the victim of an extortion racket. I would opine that your inspector, who does not allow ETL-listed components in a UL project, is part of that same racket. -----end personal rant----- YMMV but I'm happy. (Disclosure - I am not paid or compensated by Intertek ETL in any fashion, only a satisfied customer.) Super EE Dave