Which type of unshielded twisted pair (UTP) cable is designed to be flame-resistant and minimize toxic fumes?

The choice of plenum-rated cable, specifically CMP, reflects its compliance with stringent safety standards for use in air-handling spaces. Plenum spaces are areas where air circulates for heating and cooling systems, which means that any cables used in these areas must be flame-resistant to prevent fire hazards and limit the production of toxic fumes during a fire.

CMP cables feature materials that have been tested for low flame spread and low smoke generation, making them safe for installation in plenum ducts. This quality is essential in protecting both occupants and property in the event of a fire.

In contrast, other types of cables, such as CMG, are intended for general use and may not meet the same stringent standards required for plenum spaces. Standard UTP cables typically do not have any special fire-resistance properties. Thus, CMP is the right choice for environments where safety from fire and toxicity is a primary concern.