Non time delay fuse?

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ampme

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What is the maximum rating of the initial nontime delay fuse for the branch-circuit short-circuit protection of a 1 hp 3 phase 208 volt squirrel cage motor? I think it is 20 amps according to 430-150 & 430-52T. Would I be right? Thanks!
 
Re: Non time delay fuse?

4.6A X 4 (Exc 2 430.52) 18.4A (15Amps) Max. The order of exceptions does not allow the next size higher application of exception #1 Also @. states shall in no case exceed 400% of motors FLC.

Charlie
 
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