Don, I've always taught that we pick the conductors and the overcurrent device of a continuous load based on 125%. If we have a combinatin of non continuous and continuous load it's a matter of adding together the non-continuous load at 100% and the continuous at 125%. given the total we pick an overcurrent device to be not less than that number. Now if there are any ampacity adjustments for raceway fill or ambient tempetature we apply these adjustments to the conductors and as long as the result did not get below the actual connected load at 100%, we were within code. We need to also check our adjusted ampacity of the conductor to see if there was any conflict with the overcurrent device which needs to be at least the size of the continuous loat at 125% plus the non-continuous a100%. If the conductor's adjusted ampacity were below the rating of the overcurrent device we are usually permitted to round up under most circumstances.

Code references avaible- to lazy to look them up [Linked Image]

[This message has been edited by George Little (edited 03-16-2005).]

George Little