If you will count on the fuse for the overcurrent/short circuit protection of the motor, then you will have to ensure that the termination is rated at least 75 degrees. If not, then the #8 will not be protected at its ampacity.
On motor circuits, it is acceptable for the breaker to be sized somewhat larger than the conductor ampacity, but you will not be taking advantage of that aspect since the 30A fuse is protecting the motor.