Strain Relief

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tackmaster1978

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Im planning to pull 500 kcmil in a 4" emt, Wich was called out on my single line. However, When I sent in the order to my shop my they told me they dont make strain relief for 4". and the largest size strain relief fits 3" emt. please somebody help me.
 
anything Im using a 32x32x6 pullcan with a 4" in the bottom and one out the top and I havnt pulled the wire yet. And the can is in the middle of the run. anything will work. but if i have a choice I would like to install after the pull. and ul listing a plus
 
Take a look here:

http://www.o-zgedney.com/PDF/QA%201thru16.pdf

FamQACable.gif
 
tackmaster1978 said:
anything Im using a 32x32x6 pullcan with a 4" in the bottom and one out the top and I havnt pulled the wire yet. And the can is in the middle of the run. anything will work. but if i have a choice I would like to install after the pull. and ul listing a plus
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I still do not understand why would you need a strain releif. Strain relief is provided, ususally, to relieve stress from the conductor end termination, thus it is normally appled at the entry point of the enclosure where the conductor is terminated.

Is this a vertical run and you are trying to provide vertical support?

Check that pull-can sizing for bending radius while pulling. Are you providing that as a midpoint pull on a complex and long pull? Is it a straight pull or is the "pullcan" a 90 degree direction change?

Kellems grips might work.
 
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