The maximum temperature permitted for class A insulation is
- A. 180 degree centigrade
- B. 105 degree centigrade
- C. 120 degree centigrade
- D. None of the above
Answer: B. 105 degree centigrade
Explanation: Standard insulation temperature limits: Class Y = 90°C, Class A = 105°C, Class E = 120°C, Class B = 130°C, Class F = 155°C, Class H = 180°C, Class C > 180°C.