In years past, UL unofficially recognized a UL Type 4 housing as a suitable alternative for a UL Type 12 enclosure. Last year, however, the local UL inspectors suddenly did not allow a Type 5 GracePort® on a Type 12 enclosure. The required the enclosure to be detracted to a UL Type 1 rating. It did not seem to be an issue with the enclosure manufacturer that built a Type 12/4 rated enclosure.
We responded by submitting our GracePort® housings to UL to obtain the needed Type 12 rating. We were able to insert a cut gasket into the lid to pass the oil test, which is the only difference between UL Type 4 and UL Type 12.
We realize that a programming port is such a small piece of the automation puzzle. It is so small, in fact, that you can only afford to spend about 10 minutes specifying a GracePort® for your projects. Keeping up with UL is huge, but a very necessary investment. Thank you for allowing us the opportunity to help you with your programming needs. We appreciate your business.
Phil Allen, PresidentGrace Engineered Products
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment