I would like to build an ammeter for monitoring the load on a whole-home standby generator. The generator is single-phase and has a rated maximum power of 12 kW (15 kW surge) and rated maximum load current of 50 Amps at 240 Volts and 100 Amps at 120 Volts. FYI The automatic transfer switch (ATS) has load sensing, as well as load shedding capabilities. There are two dry contactors on the ATS that control relays for the air-conditioning (terminals A-A) and a 90 Amp sub-panel (terminals B-B ). Terminals A-A have precedence over terminals B-B, which shuts down the 90 Amp sub-panel so the air-conditioning can start. Air-conditioning is wired to the generator sub-panel. Yes, this all work great. The problem is there is no ammeter to see how much load is on the generator. I would like to accomplish two tasks; 1). balance the load on each leg of the generator, and 2). put as much stuff on the 90 Amp sub-panel as the generator will allow. My current thought (no pun intended) is to use 2 current transformers wired to 2 panel meters. Could it be this simple? Will a 100:5 CT wired to a compatible panel meter do the trick without any other circuitry? Will the panel meter bounce around at 60-cycles or is this controlled by the CT or meter? Other than basic math, can I indicate the total load on a seperate panel meter? If yes, how? In advance, thank you.