[FrankJ]

IFI are the ones saying that the Spike is designed to accept the self resetting CB.

The old (2010) compressor draws a lot more than 20 amps on start up. It is just about unusable with a 20 amp fuse. If the concern is the CB does not protect the relay, you need a beefier relay, not an exception to the rules.

If your running load is close to twenty amps,then you need to use something besides the spike. Which is why the rules do not allow you to run CIMs & FP motors on a spike? If you have something with a high inertia load (slow start, more time in the high current area or something subject to occasional short stalls, the CB would be a good solution using the same logic that makes it acceptable for the compressor.

I have been lazy. I have been meaning to ask the GDC for clarification. Several of inspectors have commented that they think it is against the rules. So I expect that will be the general consensus of the people that matter. (The game officials.)

BTW Replacing the spike with a JAG on a 40 amp breaker is not a good way to protect your motor. You still need to make an educated judgement on why you were blowing the fuse & what should be done about it. Not that anybody was suggesting that this would be a good idea.