Which statement is true about thermosetting PVC cables' temperature rating?

• A. Thermosetting PVC cables can withstand temperatures up to 100 degrees Celsius.
• B. Thermosetting PVC cables can withstand temperatures up to 70 degrees Celsius.
• C. Thermosetting PVC cables can withstand temperatures up to 90 degrees Celsius.
• D. Thermosetting PVC cables can withstand temperatures up to 60 degrees Celsius.

Answer: (A)

The main idea is understanding how insulation temperature rating works for cables. Thermosetting PVC insulation is cross‑linked, which gives it greater thermal stability and flame resistance than thermoplastic PVC. That higher stability lets the insulation keep its properties at higher temperatures, so it is commonly specified for a higher continuous operating temperature. Saying it can withstand up to 100°C reflects that higher rating, making it the best match among the options. The lower figures would apply to other materials or less heat‑resistant variants, so they aren’t the correct match for thermosetting PVC.