[ sorry, I got confused by the transform being a current transformer and posted nonsense ]
On reflection I see some confusion about using a current transformer.
A current transformer must be inline with the load, never never never ever across the mains!!!
A current transformer needs a suitable burden resistor or very bad things may happen (extreme voltages).
Its by far the best idea to get a current transformer with a built-in burden resistor so you don't have to worry about it - is this what you have (STC-013 by itself doesn't imply this (and its wrong, the part is SCT-013 anyway)). Burden resistors are low values, a current transformer is designed to work with the secondary shorted, never ever open.
The easiest way to use a CT with a built-in burden resistor is like the circuit in #6, but not connected across the mains as in that diagram - the secondary side is fine (you can lose the TVS diode and C1 and still be safe from overload as the 10k resistors limit the current into A1, C1 isn't doing anything useful)