. Continuous load? I don't see any requirement to derate a switch for continuous loads. What about if it's the disconnect or controller for a motor?Trying to think of a way to complicate this and call it an unanswerable question. Continuous load? I don't see any requirement to derate a switch for continuous loads. What about if it's the disconnect or controller for a motor?
Yes very true! We should note the ocpd can be higher than 15, but the load can't.Therein lies the “trick” part of the question. Even though there may be certain scenarios where the current might be limited to a value less than 15, those are, by definition, no longer the maximum.
The maximum is definitely 15.
Can not remember if it was my sparky dad, Vo Tech class or during an apprenticeship many years ago was told to always use the 80% rule so I never used a 15 amp toggle switch for more then 12 amps. Even went the extra mile and always used a spec grade 20 amp toggle switch on all residential garbage disposals. Never had trouble with 250 & 600 volt fusible safety switches using the 80% rule along with quality fuses. I rather spend a little more money then get a call back a few years later. You did not mention what type of load that you want to use a 15 amp toggle switch on. For all LED'S probably would not be a problem. A high inrush load like an air compressor should use a Manuel starter switch. Installed a 120 volt Manuel starter on my washing machine & gas dryer 45 years ago. The one for washing machine tripped out a few times when I forgot to remove short pieces of #10 solid copper wire that jammed water pump up.
. Continuous load? I don't see any requirement to derate a switch for continuous loads. What about if it's the disconnect or controller for a motor?