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Senior Member
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Discussion Starter · #1 ·
This contractor will have to put a bushing on that one pipe; my question is do conduit fill rules apply to low voltage signal and control wiring as well?



2011 code book references would be great.
Thanks!
 

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Senior Member
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Discussion Starter · #2 · (Edited)
Maybe I found the answer, according to table 9, note 5 the fill rules even apply to fiber optic cables. Then control wires would also be subject to the rule.
 

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Armed and Unhinged
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This contractor will have to put a bushing on that one pipe; my question is do conduit fill rules apply to low voltage signal and control wiring as well?

2011 code book references would be great.
Thanks!
Try 770.110 B 1 for fiber optic

725.3 A says see 300.17 for signaling

Which mainly says number and size of conductors shall not be more than will permit dissipation of the heat and ready installation or withdrawal of the conductors without damage to the conductors or their insulation.

Also look at 725.49 B and 725.50 A if your using signaling class 1 circuits.
 

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IBEW L.U. 1852
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5,261 Posts
Wow......holy overfill


I haven't seen Alerton HVAC controllers in years. I used to work with that product about 10 yrs back and actually got quite proficient at programming BacTalk for those little suckers. Would be lost at them now.
 

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Coffee drinking member
I pretwist and then use wire nuts. Solder pots rule.
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Rollie73 said:
Wow......holy overfill I haven't seen Alerton HVAC controllers in years. I used to work with that product about 10 yrs back and actually got quite proficient at programming BacTalk for those little suckers. Would be lost at them now.
I just stumbled across my old Alerton books last night in my basement shop.
Haven't touched them in 14+ years or so.
 

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IBEW L.U. 1852
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5,261 Posts
I just stumbled across my old Alerton books last night in my basement shop.
Haven't touched them in 14+ years or so.
I can't believe they haven't updated their design in 20+ years:rolleyes: Way to go Honeywell
 

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Coffee drinking member
I pretwist and then use wire nuts. Solder pots rule.
Joined
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13,992 Posts
Rollie73 said:
I can't believe they haven't updated their design in 20+ years:rolleyes: Way to go Honeywell
We had a training course just down the road off of Rt 12 back then. They were nice enough people, but Landis / Gier got a sub contract from ComEd for replacing controls here during energy audits back in 99/2000. Not long afterwords Siemens bought them out... We were their largest site for years for building automation.
 

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Wirenuting said:
We had a training course just down the road off of Rt 12 back then. They were nice enough people, but Landis / Gier got a sub contract from ComEd for replacing controls here during energy audits back in 99/2000. Not long afterwords Siemens bought them out... We were their largest site for years for building automation.
Are you at arsenal?
 

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Coffee drinking member
I pretwist and then use wire nuts. Solder pots rule.
Joined
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13,992 Posts

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Coffee drinking member
I pretwist and then use wire nuts. Solder pots rule.
Joined
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13,992 Posts
ponyboy said:
Ten four. I saw a certain prototype of a certain machine getting ready go to a certain somewhere or another today
Ok, I've seen lots of that over the years.
 
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