Aircraft Hanger

[augie47]

Is there any requirement in any Code requiring a ground ring at an aircraft hanger. There are plans showing a 4/0 ground ring with 2/0 tails to structural steel. AFIK it's an engineering requirement but Ive been asked if it's in any Code.
T

 

[rc/retired]

I don't see anything in article 513 that requires a ground ring. Gotta be an engineer's design.
Good luck

Ron

 

[don_resqcapt19]

Is there any requirement in any Code requiring a ground ring at an aircraft hanger. There are plans showing a 4/0 ground ring with 2/0 tails to structural steel. AFIK it's an engineering requirement but Ive been asked if it's in any Code.
T

That was a common industrial spec, but not in the NEC.

 

[five.five-six]

Is there any requirement in any Code requiring a ground ring at an aircraft hanger. There are plans showing a 4/0 ground ring with 2/0 tails to structural steel. AFIK it's an engineering requirement but Ive been asked if it's in any Code.
T

That’s a customer specification. I have never done an aircraft hanger but I have read about that. Also a standard in carrier CO and cellular. Typically connection means is exothermic (Caldweld) I would not deviate from the drawings without getting it in writing from the customer. Are the drawings stamped?

Charge for the work and make money on it!