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Stapling over joist for trusses ?

CEC 
13K views 22 replies 15 participants last post by  MechanicalDVR 
#1 ·
In a farmers shop and am running wire for some lights and I asked my boss if I could go over the joists if I wanted to. I didn't and went elsewhere anyway, but he said you can't staple to the top of joists. I didn't really see anything in the code that prohibits it because the spacing is less than 1.5 metres. Is he right? Other than its ugly as hell?
 

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#10 ·
I know I need to have a clearance of 3 feet between the roof and the tie beam/joist/whatever and a support of 1.5 metres between them horizontally. If both these conditions are met, which can easily be done in the example in the picture, then it should be fine shouldn't it? And yes it's Canada so CEC rules but I didn't see anything that wouldn't allow it.
 
#17 ·
Here you go...

12-510 Running of cable between boxes and fittings (see Appendices B and G)
Δ 1) Where the cable is run between boxes and fittings, it shall be supported by straps, Type 2S or 21S cable ties, or other devices located
a) within 300 mm of every box or fitting; and
b) at intervals of not more than 1.5 m throughout the run.

2) Cables run through holes in joists or studs shall be considered to be supported.

3) Notwithstanding Subrules 1) and 2), where the cable is run as concealed wiring such that it is impracticable to support it, and where metal sheeting or cladding, metal joists, metal top or bottom plates, or metal studs are not used, the cable shall be permitted to be fished and need not be supported between boxes and fittings.

Δ 4) Notwithstanding Subrule 1) a), where cable is run to a switch or a receptacle with an integral enclosure incorporating an integral cable clamp, the cable shall be supported by straps, Type 2S or 21S cable ties, or other devices located within 300 mm of the switch or receptacle wall opening, and there shall be at least a 300 mm loop of unbroken cable or 150 mm of a cable end available on the interior side of the finished wall to permit replacement.
Cheers
John
 
#20 ·
In a farmers shop and am running wire for some lights and I asked my boss if I could go over the joists if I wanted to. I didn't and went elsewhere anyway, but he said you can't staple to the top of joists. I didn't really see anything in the code that prohibits it because the spacing is less than 1.5 metres. Is he right? Other than its ugly as hell?
I know you said it’️s a farmers shop, but will there be any livestock in there?
Nope it's the garage basically. If it's animals I believe pvc is required.
 
#21 ·
100% No issues, no runners required unless you have more than a meter of head space above your cables. The intent is to protect the cable if there is potential someone may walk on it when entering attic space, that's all. Wired my brother in laws shop this way, there were no issues with the inspection. He wanted it quick and cheap.
 
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