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#29307 09/13/03 06:58 PM
Joined: May 2002
Posts: 68
E
Eandrew Offline OP
Member
I was wondering why, when the definition of ampacity is " the continuous current that a conductor can carry without exceeding its temperature rating (as listed in 310.16) do you still have to increase that ampacity 125% for a continuous load. Is the word "continuous" in the definition of ampacity not the same a "continuous " in continuous load?

#29308 09/20/03 12:50 PM
Joined: Apr 2002
Posts: 197
T
Member
I could be wrong (often am) but I thought the 125% was primarily factored in for the OCP. Most OCPs are not rated for continuous use at 100%. As far as I know, as long as the rules for all other variables (such as #CCC, amb. temp, termination rating, OCP, etc.) are adhered to, conductors CAN be used at 100% of their capacity for an indefinite period of time. Am I wrong again?

#29309 09/20/03 01:37 PM
Joined: May 2002
Posts: 1,716
R
Member
Erik, look here. https://www.electrical-contractor.net/ubb/Forum2/HTML/000583.html

You'll find this familiar. [Linked Image]

Roger

#29310 09/22/03 04:26 PM
Joined: Apr 2002
Posts: 197
T
Member
How do ya like that...I was right this time. It was bound to happen sooner or later.

#29311 09/22/03 07:51 PM
Joined: May 2002
Posts: 1,716
R
Member
Triple, don't cut yoursef short. [Linked Image]

Roger


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