Thanks for the advice, however I should note that you are replying to someone that is unfamiliar with the nomenclature you posted. I don't know what H1 and H2 are. Nothing in my install manuals or terminal designations refer to those.
And your previous reply... "Torid" [sic]? : )
H1 and H2 refer to the two balanced hot lines in the 240 V mains - and they're sometimes referred to as L1 and L2. Diagram here; the right side of this represents what you are delivered to your panel by your utility company. H1 and H2 are the two on the outside; N (neutral) is the center:
Ignore the 2.4 kV primary side here, that's the domain of the utility.
And a toroid is the one-turn transformer device that senses the current; it's usually in the shape of a toroid and essentially surrounds either H1 or H2 (but not both, as that would either double or zero out the current sensed, depending on the direction the wires went through).
Their instructions will often just illustrate a 120 V connection to line and neutral (essentially, either one of the 120 V mains above, plus neutral), and you have to dig in and infer if you can connect a 240 V system. This diagram was the key to me that this was OK, as it illustrates a Chinese universal socket carrying 230 V AC / 50 Hz power on both the upper and lower parts - and whether this is balanced or not, who knows, it's a Chinese system and it all depends on how the utility does it.
Finally - if you're unfamiliar with this, you might want to seek some professional help to get this device installed, as it's not to be taken lightly.
