3 Phase power supply in FLA Calc.

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BN32

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Location
Chicago, IL
Occupation
Design
Let me start by saying I’m not an engineer and I haven’t been doing this very long. I’m doing an FLA calc for my UL 508A label. I’ve added up my loads in the power circuit. Motors, transformer, etc. I have a couple of 3 phase power supplies that I’m not sure on how to calculate their FLA. Both power supplies are protected by 2 amp fuses. Is it safe to just use the 2 amp fuse rating? Any feedback would be helpful. Thanks.
 

Jraef

Moderator, OTD
Staff member
Location
San Francisco Bay Area, CA, USA
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Electrical Engineer
Let me start by saying I’m not an engineer and I haven’t been doing this very long. I’m doing an FLA calc for my UL 508A label. I’ve added up my loads in the power circuit. Motors, transformer, etc. I have a couple of 3 phase power supplies that I’m not sure on how to calculate their FLA. Both power supplies are protected by 2 amp fuses. Is it safe to just use the 2 amp fuse rating? Any feedback would be helpful. Thanks.
You don't know the watt capacity of the power supplies? How do you know if they will handle the load?
 
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