Hello, Are there requirements or guidelines around what a power supply input breaker should be rated for a given nominal input current assuming the power cord is rated appropriately? Looking through the harmonized 950 standard I did not come across anything.
I seem to recall seeing a 125% figure once but don't remember where that was. I would assume that the circuit breaker would be some percent higher than the nominal input current rating to prevent nuisance trips and to take into account surge current or perhaps this is addressed by the trip characteristics of the breaker. To give an example, if the unit has an input current rating of 16amps, is there a rule which states the input circuit breaker must fall within some rating range. Regards, Bob Brister DIGITAL bris...@mail.dec.com
