Cat5e in EMT,do I need to ground emt? - Page 2 - Electrician Talk - Professional Electrical Contractors Forum
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Old 02-08-2017, 12:51 PM   #21
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Originally Posted by oliquir View Post
in the cec anything under 50vac or dc doesnt need grounding/bonding.
I think he is talking about the EMT, not the circuit. Here is from CEC:

10-304 Other conductor enclosures
(1) Metal enclosures for conductors, other than those referred to in Rule 10-300 *(services), shall be bonded to ground, except
(a) in runs of less than 7.5 m that are free from probable contact with ground, grounded metal, metal lath, or conductive thermal insulation, and that, where within reach from grounded surfaces, are guarded against contact by persons; and
(b) runs used for physical protective sleeving of less than 1.5 m in length, where the installation method is such that it is improbable that they will become energized.

So it may be required to be bonded to ground.
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Old 02-08-2017, 06:44 PM   #22
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I came up not pulling a ground wire in any EMT.
Now these young guys want to waste a roll of green wire every chance they get.
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Old 02-08-2017, 08:22 PM   #23
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Originally Posted by Suncoast Power View Post
I came up not pulling a ground wire in any EMT.
Now these young guys want to waste a roll of green wire every chance they get.
Depends what it is: EMT carrying power on non-conductive structure? I'm pulling a ground. Seen too much damaged pipe to want to risk that.
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Old 02-08-2017, 09:28 PM   #24
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Many times I won't put a green wire in a pipe feeding overhead lights, because you would have to be trying to get shocked in order for fixture grounding to be necessary. I too have seen enough broken conduit fittings/joints that pulling a bonding wire to receptacles and utilization equipment has become second nature to me.
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Old 02-08-2017, 09:43 PM   #25
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Steel setscrew solve lots of those problems
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Old 02-08-2017, 10:18 PM   #26
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Steel setscrew solve lots of those problems
No doubt. Most separated conduit joints are either broken zinc cast fittings or compression fittings.
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Old 02-11-2017, 12:29 PM   #27
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Is there any lightning protection on this structure. If so, I would bond it. If not I would look to see if it is a suspect area for strikes. You are probably putting these cameras at some of the higher points of this building..
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Old 02-11-2017, 01:15 PM   #28
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My experience has been to bond certain isolated sections of metallic conduits to ground.
Can never have enough bonding points.
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