UL 1666：电缆和光缆垂直安装在竖井中时火焰蔓延高度的测试
UL 1666：Standard for Test for Flame Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts
Abstract 摘要
This is a fire test for determining values of flame propagation height for electrical and optical-fiber cables that are for installation vertically in shafts or in vertical runs that penetrate more than one floor. The purpose of this test is to determine whether the flame propagation
characteristics of these "riser" cables are in accordance with the National Electrical Code. This test does not investigate the toxicity or corrosivity of the products of combustion or decomposition. This test does not cover the construction requirements for any cable or the electrical, optical, and other performance requirements for any cable.
characteristics of these "riser" cables are in accordance with the National Electrical Code. This test does not investigate the toxicity or corrosivity of the products of combustion or decomposition. This test does not cover the construction requirements for any cable or the electrical, optical, and other performance requirements for any cable.
