UL SUBJECT 1400-1-2022
UL Outline for Investigation Fault-Managed Power Systems – Part 1: Safety Requirements

Standard No.

UL SUBJECT 1400-1-2022

Release Date

2022

Published By

Underwriters Laboratories (UL)

Latest

UL SUBJECT 1400-1-2022

UL SUBJECT 1400-1-2022 history

• 2022 UL SUBJECT 1400-1-2022 UL Outline for Investigation Fault-Managed Power Systems – Part 1: Safety Requirements
• 2019 UL Subject 1400-1-2019 Outline of Investigation for Electrical Resistance Trace Heating and Associated Controls for Use In Sprinkler and Standpipe Systems (Outline, 4/24/2019)