80 % rule

[misterbill1972]

Under 600V is there an exception to not rate circuit breakers @ 80% of there marked load, or a time when circuit breakers should be fully rated? I thought I found it in the code book in the past and now I cannot!

 

[JohnJ0906]

210.19(a)(1)
215.2(a)(1)
230.42(a)

Really only applies to continuous loads