In North America, emergency transfer switches, including the new Branch Circuit Emergency Lighting Transfer Switch (BCELTS), have tough testing and short circuit current requirements for a reason.
Tag: UL listing
Can Emergency luminaires be cord-and-plug connected?
With the many recent changes to the US National Electrical Code (NEC) regarding emergency lighting, I am often asked whether an emergency luminaire is allowed to be cord-and-plug connected.
Secrets of Product Listing Part 3: “UL Listed” vs. “UL Recognized”
In the US, Product Listing provides a wealth of information about the correct and safe use of a product. Today we slice through the “marketing speak” to understand the difference between UL Listed and UL Recognized products.
Secrets of Product Listing Part 2: Tools and tips for specifiers and users
In the US, Product Listing by a Nationally Recognized Testing Laboratory provides a wealth of information about the correct and safe use of a product. How do we find that information and make good use of it?
Secrets of Product Listing Part 1: How to be electrically-informed
In the US, Product Listing by a Nationally Recognized Testing Laboratory provides a wealth of information about the correct and safe use of a product. But what is Listing, and what does it tell us?
What is a “Directly Controlled Luminaire,” and why should I care?
Recent changes in the US National Electrical Code and UL standards have significantly changed the rules for emergency lighting in the US. We explore those changes in this blog.
