Hi,
CT-125 and equivalent tends to be rated 600V RMS and RG-213/214 et al is rated for 20KV under a wide range of standards!!!!!
Compared to RG-213/214 what you cite is capable of much less.
You may know which standar to cite, but clearly you do not know what it means. The absence of an explicit mains-grade cettification simply means it was not applied for, not that the certification could not be attained....
L8er T