The difference between fire-resistant cables and flame-retardant cables
fundamental difference
The core of flame-retardant cables lies in "preventing the spread of combustion". By adding flame retardants, the combustion speed of cables is delayed, but they cannot maintain power supply in a flame.
The core of fire-resistant cables lies in their "ability to maintain electrical continuity", ensuring power transmission for a certain period of time even under direct flame exposure.
Common misconceptions
"Flame-retardant cable is fire-resistant cable"
Flame-retardant cables can only prevent the spread of fire and cannot maintain power supply in a flame; whereas the core of fire-resistant cables is to maintain power supply. The two have completely different functions and cannot be substituted for each other.
"Any cable with a red sheath is a fire-resistant cable."
The sheath color is arbitrarily assigned (usually red represents the fire protection circuit), but it cannot serve as a basis for judgment. Genuine fire-resistant cables must pass national fire resistance tests, rather than being distinguished by color.
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