I have a junction box like the one shown in the picture below. Do I just run the cable straight in or do I have to use some conduit/coating? I am thinking that maybe if I run the cable straight in the cable insulation might be damaged from the pressure of the hole. 
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george
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2What type of cabling are you talking about? What is this wire used for? – David Dec 26 '18 at 14:54
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1There are clamps designed to hold the cable in the hole. But what type will depend on the type of box and the type of cable. – manassehkatz-Moving 2 Codidact Dec 26 '18 at 16:32
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What country is this installation in? – Jim Stewart Dec 26 '18 at 19:43
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Clamps are required to protect the cable from damage, I like raco brand insiders because they are quick and inexpensive, there are also 2 screw cable clamps that are commonly used to protect cables like T&B nc301 , these are easily found at plumbing and electric shops or big box stores.
Ed Beal
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