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Discuss Any conlock converts on here? in the Commercial Electrical Advice area at ElectriciansForums.net

Lucien Nunes

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I can understand the attraction of the speed and ease of installation, and having built many structures with Kee Klamp tube I can believe that Conlock will do the job up to a point. But no matter how well it does or doesn't work, it feels like a bodge because for nearly a century, pin-grip, lug-grip and other types of slip conduit fittings were considered unreliable for maintaining continuity and could not be used as a CPC. For cheap slip jobs there was also 'close joint' tube, i.e. unwelded, that obviously couldn't be threaded and didn't exclude moisture and air from the cables. Only domestic and budget commercial work ever specced slip conduit and many contracts specifically prohibited it, so any pin grip system would definitely seem like a corner-cutting exercise.
 
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mossep

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Seem like you could only use it for exposed installations then, surely all of the screw joints would have to be readily accessible to ensure earth continuity.
 
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Seem like you could only use it for exposed installations then, surely all of the screw joints would have to be readily accessible to ensure earth continuity.
The company are advertising that it’s been used on some fairly major sites.
I doubt that periodic checking of the tightness of the grub screws has been factored in to any costings.
I also know that on one site, that many of the grub screws are or will be inaccessible.
 

mossep

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The company are advertising that it’s been used on some fairly major sites.
I doubt that periodic checking of the tightness of the grub screws has been factored in to any costings.
I also know that on one site, that many of the grub screws are or will be inaccessible.

I would imagine there are a lot lying on the floor too
 

Andy78

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Out of interest what size are the screws that hold this lot together ? Are they pointed ends ? Are they treated with threadloc or similar ?
 
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Out of interest what size are the screws that hold this lot together ? Are they pointed ends ? Are they treated with threadloc or similar ?
Memory’s not great, seem to recall a 2.5mm Allen key fits.
Not sure about pointed or not?
 

davesparks

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It was used in a new build entertainment venue locally a few years ago.
Working on a few shows there I’ve seen a number of conduit joints which have fallen apart leaving the singles inside as the only thing holding up some parts of the conduit. They’ve probably been knocked a few times in the normal use of the installation, but they certainly didn’t stand up to it!

I can see it being ok for installations where the conduit is more decorative than functional, but not where actual mechanical strength is required
 
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I'm curious why anyone would even use this. It's obviously not explosion proof or raintight, what purpose is rigid piping if not for those 2 purposes??
 

i=p/u

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It's not to bad to install, its quicker and if your staff havent the skills it's a no brainer.
 

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