CI Cable: An Issue of Safety

I read the article "Circuit Security," (Sept. 2001, p. 55), along with the letter that this piece on circuit integrity (CI) cable elicited in the December 2001 issue. I took interest in the subsequent response by author Dean Wilson that he is "not aware of any notable fire occurring where propagation of smoke through the conduit played a significant role in the physical damage or threat ...

02/01/2002


I read the article "Circuit Security," (Sept. 2001, p. 55), along with the letter that this piece on circuit integrity (CI) cable elicited in the December 2001 issue. I took interest in the subsequent response by author Dean Wilson that he is "not aware of any notable fire occurring where propagation of smoke through the conduit played a significant role in the physical damage or threat to life." On the subject of CI cable creating flammable smoke when it ceramifies, I offer the following comment: While it is true that over the years there has been some awareness of the general issue of smoke migration through conduit as stated, we believe it is now a more critical life-safety issue. Out of the 30 types listed in Electrical Circuit Protective Systems, only these "ceramifiable insulated" cables result in flammable gases being channeled directly into emergency equipment enclosures, and the volume of smoke and gas produced is very large, creating a hazardous environment. We contend that where life-safety circuits are involved, hazards, such as smoke migration, should not be introduced in any system that might result in an emergency.

Barry O'Connell, P.E., Commercial Marketing Director Pyrotenax Cable Ltd., Trenton, Ontario





Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
2017 MEP Giants; Mergers and acquisitions report; ASHRAE 62.1; LEED v4 updates and tips; Understanding overcurrent protection
Integrating electrical and HVAC for energy efficiency; Mixed-use buildings; ASHRAE 90.4; Wireless fire alarms assessment and challenges
Integrated building networks, NFPA 99, recover waste heat, chilled water systems, Internet of Things, BAS controls
Transformers; Electrical system design; Selecting and sizing transformers; Grounded and ungrounded system design, Paralleling generator systems
Commissioning electrical systems; Designing emergency and standby generator systems; VFDs in high-performance buildings
Tying a microgrid to the smart grid; Paralleling generator systems; Previewing NEC 2017 changes
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me