Spacing of schedule 80 on flat asphalt roofs in southern california.

[cybersurge]

Hello everyone,
I have been on this forum for a short period of time. I had posed a question that I thought would get an answer, but no one has responded to my specific question on distance spacing from one roof support to another support i.e you to support the pipe every 4, 5, 6 feet etc.
I would like to know what the spacing support distance in feet between each rooftop support block (this is a flat roof) fastened to uni straps to 2" schedule 80 pipe with #3 wire approx. 100 feet (30.48 meters) for a 26KW Generac generator. Also, would you know what code number for LA city it would be? I have called LADBS and I get nowhere.

I would appreciate your help in this matter.

 

[tom baker]

I answered and gave you the NEC article number for your reference. I would go no more than 3 ft.

 

[cybersurge]

I answered and gave you the NEC article number for your reference. I would go no more than 3 ft.

Thank you very much

 

[tom baker]

Thank you very much

Remember you expansion couplings and straps must allow movement, other wise you will have a noodle on the roof