two questions (ATS / OCPD)

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Mike01

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If i have a outdoor generator with a output circuit breaker where the conductors enter the building am I required to have another OCPD or can I land the conductors directly in the transfer switch?

Question #2 I know I have seen before but could not find it, I was looking at a heat pump installation that indicated two compressors for each package each compressor is indicated at 22.4 fla it also indicates the MCA to be comp.#1*1.25+comp#2 it then states the recommended fuse size to be 2.25*comp#1+comp#2. my question if the installation guide indicates fuses, what about a breaker but I thought I read somewhere that if the installation guide calls for fuses and no recommendations for a circuit breaker that you had to provided a fused disc. switch before the device control panel? is this true and where could I find this requirement?? thanks.
 
If i have a outdoor generator with a output circuit breaker where the conductors enter the building am I required to have another OCPD or can I land the conductors directly in the transfer switch?

Question #2 I know I have seen before but could not find it, I was looking at a heat pump installation that indicated two compressors for each package each compressor is indicated at 22.4 fla it also indicates the MCA to be comp.#1*1.25+comp#2 it then states the recommended fuse size to be 2.25*comp#1+comp#2. my question if the installation guide indicates fuses, what about a breaker but I thought I read somewhere that if the installation guide calls for fuses and no recommendations for a circuit breaker that you had to provided a fused disc. switch before the device control panel? is this true and where could I find this requirement?? thanks.

Question 1
If the generator has OCPD on it, for the output conductors, then no other OCPD is required, a disconnect could be required depending upon the distance from the generator to the TS 445.18, but the only other requirment is that the TS has to have OCPD between it and the service if so supplied from it.

Question 2
Close as I can find on the fly is 440.52(A)(3) and 440.53 + exception
 
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