Full Description

Please note: All interim revisions for this edition available at time of your purchase will be included.

The test method described in these requirements is intended to evaluate the fire resistive performance of electrical cables as measured by functionality during aperiod of fire exposure, and following exposure to a hose stream.

To maintain the functionality of electrical cables during a fire exposure the cables are tested using a fire resistive barrier. The fire resistive barrier is the cablejacketing if the jacketing is designed to provide fire resistance. If the cable jacketing is not designed to provide fire resistance, the electrical cables are either placedwithin a fire resistive barrier or installed within an hourly rated fire resistive assembly (see ). Fire resistive cables intended to be installed with a non-fire resistivebarrier (such as conduit) are tested with the non-fire resistive barrier included as part of the test specimen. Otherwise fire resistive cables incorporating a fire resistivejacket are tested without any barrier.

To demonstrate each cable's ability to function during the test, voltage and current are applied to the cable during the fire exposure portion of the test, and theelectrical and visual performance of the cable is monitored. The cable is not energized during the hose spray, but it is visually inspected and electrically tested after thehose spray.

Product Details

Edition: 1st Published: 05/11/2001 Number of Pages: 34