Fire Alarm cable mounted to Sprinkler Pipe

[iwire]

Personally i like hang j hooks or Bridle rings if I cannot strap if to the top of a bar joist.

2008 NEC 300.4(E) pretty much rules that out. you need to be a 1.50" down from the deck.

 

[don_resqcapt19]

2008 NEC 300.4(E) pretty much rules that out. you need to be a 1.50" down from the deck.

300.4(E) is not referenced in Article 725 or 760 so it does not apply.

 

[nhfire77]

300.4(E) is not referenced in Article 725 or 760 so it does not apply.

I meant the top of the bottom rail not at the top top, I know what you mean Bob. I didn't mean it that way.

 

[JohnJ0906]

300.4(E) is not referenced in Article 725 or 760 so it does not apply.

90.3 Code arrangement
".......Chapters 5,6,and 7 aplly to special occupancies, special equipment, or other special conditions. These latter chapters supplement or modify the general rules. Chapters 1 through 4 apply except as amended by Chapters 5, 6, and 7 for the particular conditions. ....."

If 300.4(E) is not referenced, then it fully applies.

 

[don_resqcapt19]

90.3 Code arrangement
".......Chapters 5,6,and 7 aplly to special occupancies, special equipment, or other special conditions. These latter chapters supplement or modify the general rules. Chapters 1 through 4 apply except as amended by Chapters 5, 6, and 7 for the particular conditions. ....."

If 300.4(E) is not referenced, then it fully applies.

John,
Take a look at 725.3 or 760.3.

725.3 Other Articles.
Circuits and equipment shall comply with the articles or sections listed in 725.3(A) through (G). Only those sections of Article 300 referenced in this article shall apply to Class 1, Class 2, and Class 3 circuits.

760.3 Other Articles.
Circuits and equipment shall comply with 760.3(A) through (G). Only those sections of Article 300 referenced in this article shall apply to fire alarm systems.

 

[JohnJ0906]

John,
Take a look at 725.3 or 760.3.

Thank you, Don.

 

[GOCS626]

I am not sure why I see so many installations where the installer has secured his wiring method to pipe, conduit, raceways, whatever one wants to call them.

Why is this such a prevalent installation practice?

People are lazy.