Electrical infrastructure, just like effectively every other aspect of engineering, is subject to regulation pursuant to one (or several) codes. Some of the regulations are set by a body known as the National Electrical Code, or NEC. As a loose example of the far reaching consequences of these regulations, consider the following.

The NEC requires that a Ground Fault Circuit Interrupter, GFCI, be installed in wet locations. A GFCI protects an electrical system as well as greater structures and inhabitants by interrupting the electrical power supplied whenever they detect some sort of discrepancy with current or voltage.

In this manner, a GFCI can help prevent issues associated with damage to appliances, fire, or even electrical shock to individuals that inhabit the structure. Many of the NEC’s regulations have been created to help minimize risk to life and limb by setting other prescriptions.

With respect to Belden Fire Alarm Cable and where and how it can be effectively and safely used, there are, among many others, two important words with which you should become familiar. They are “plenum” and “riser” space, and they refer to separate spaces within a building through which you may need to run electrical cables, including but not limited to alarm cable. That said, cables are rated according to the spaces in which they can be used.

For clarity, riser space is the vertical space that travels between the floors of a building. Not only electrical cable but also other pipes and conduits must traverse this space. Also, in order for an alarm system to communicate effectively, across floors, the proper alarm cable must be run through them. Generally speaking, the requirements for cables to be used in riser space are less stringent than the requirements imposed on cables rated for plenum space.

In contrast to riser space, plenum space is the space that exists above a ceiling, often above a drop ceiling, that is typically reserved for the accommodation of ductwork and heating and cooling infrastructure. Because this space can become very hot (or cold, for that matter) plenum-rated cables are typically tougher than riser rated cables. Specifically, they are typically more resistant to heat.

It is important to be familiar with these distinctions before you take it upon yourself to secure Belden Fire Alarm cable for completing the wiring of a circuit, because it is inadvisable, and perhaps a violation of code, to use electrical cable in a manner inconsistent with its relevant ratings or approvals. That is to say, plenum-rated cable must be used in plenum space, and riser rated cable must be reserved for use in riser space.

In addition to these specific ratings, it is also customary for fire alarm cables to be highly heat resistant, and to be made with special materials in the insulation that do not produce toxic or noxious fumes, even when exposed to high heat or flames.

To learn more about the differences that exist between fire alarm cables, visit EWCS Wire at EWCSWire.com. There you can learn more about the products themselves, or get in touch with their customer service team at sales@ewcswire.com to ask any questions you still have.

Reviewed by Newzpot on 19:15:00 Rating: 5
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