Cable Fill in a Ground / Zero Sequence CT?

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mbk.2k3

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Canada
If I have a window type ground/zero sequence CT, with a 7.5" window diameter, are there any standards for how much cable can be passed through this CT?


I have 12 conductors (4x3Cx___MCM) [can't remember gauge exactly], and the cables are a very tight fit. I'm worried about the pressure this causes on the CT, and potential overheating in that small area due to thermal dissipation from the cables.


Thoughts?
 
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