@Marla The CT class is 10P150F20 which is from an old CT standard (Australian Standard 1675). The modern equivalent to IEC 60044 would be class 10P20 7.5VA, i.e. accuracy will be within spec so long as the burden is less than 7.5 VA. That 7.5 A includes the load itself as well as the burden of the secondary wiring (can be substantial for long runs of cabling.)

Is it possible to contact a certain user?

@Khalid You can try pinging them here by prepending @ to their name, or try to leave a comment on one of their posts if you really must (this isn't what comments are strictly for)

only showed the ohms sign and no value for ohms either.

Does anyone know hiw to delete an upvoted question? This is because I will get into legal trouble if I didn't. Please help me out, this will mean the world to me

@Khalid Flag it for moderator attention and explain the situation

@Gallifreyan Do I need to explain it here or is there an option where I can do that privetly?

@Khalid Moderator flags on posts are private