overcurrent protection

[millma]

Maximum standard overcurrent device rating for 3 parallel runs of 75 c rated, 350 kcmil THHW copper conductiors in 3 parallel runs of EMT is. A 700 amp B800 amp C1000amp D 1200 amp

 

[roger]

First, what is your answer and how did you come up with it?

Roger

 

[millma]

C 1000 Amps 310-16

 

[bob]

Millma
Come on. Check 240.4 and show us what you did.

 

[millma]

would ity be 1000amp due to 240 4 c next overcurrent device higher

 

[infinity]

would ity be 1000amp due to 240 4 c next overcurrent device higher

You cannot go up to the next larger size once your over 800 amps. Look at 240.4(B).

 

[millma]

Thank tou Infinity with 240-4b-3 not to exceed 800 amps and 240-c condutors equal to or greater than overcurrent device Makes my answer 800amps