What type of wiring is required for interlock circuits to withstand high temperatures?

The requirement for flame-retardant wiring in interlock circuits is crucial due to the high temperatures that may be encountered in elevator systems. Interlock circuits are integral for safety, ensuring that elevator doors do not open when the car is not at the correct level or has not been properly secured.

Flame-retardant wiring is specifically designed to resist ignition and can withstand higher temperatures without degrading. This characteristic is essential in an environment where heat could potentially arise from electrical components or other sources. Utilizing standard wiring could pose a safety hazard as it may not withstand elevated temperatures, leading to potential failure of the circuit or even fire hazards.

While other types of wiring, such as heavy-duty or low-temperature wiring, serve specific purposes, they do not provide the necessary protection against high temperatures that flame-retardant wiring offers. Thus, flame-retardant wiring is the most suitable choice for applications involving interlock circuits where temperature resilience is a priority for safety and reliability.