Thanks again for the support you’ve provided to help me get where I am. I know in the past I asked about in which cases we can use a single clamp to monitor a double pole circuit (by checking the “double” option when configuring the inputs), and @overeasy you mentioned that in general if there’s no neutral on a double pole circuit, its a good indication that you can use the single clamp with the “double” option…
Recently in another thread I saw @overeasy mention that solar circuits can use a single CT with the “double” option checked and realized I can make that change in my setup (I’m currently using two CTs). I guess in my mind since I ran a neutral to the sub panel where I aggregate several solar related circuits (multiple string inverters, micro inverter strings), I was thinking for some reason that this circuit isn’t applicable to the “double” option/single CT. But I guess the actual 100A breaker itself which sources the sub panel doesn’t have a neutral on it. I guess I’m confused about how to identify which circuits “have a neutral” in this sense.
Besides the main distribution panel - are there other common double pole circuits which usually need two separate CT’s to measure? Right now, I’ve got a single CT measuring the following double pole circuits successfully: Water heater, AC (and soon to be my Solar sub panel). The other double pole breakers in my main distribution panel are: Furnace (50A), Range (40A), Dryer (30A). I know those are common usage-circuits, do all of those sound like single-CT/“double” option circuits?
I show my measurements and graphs to anyone who’s interested and one of my family members had a question for their situation. They like the individual breaker monitoring so they can isolate power consumers in their house, but they have a solar circuit in a not-so-nearby location to their main distribution panel. Is it possible to use a 3.5mm extension cord (e.g. headphone jack extension cord) with the IoTaWatt CTs of any amperage (to be able to use a single IoTaWatt device to measure their main distribution panel mains and their solar circuit which is far apart)? Would a special type of extension cord be required? Would the signal degrade over the length of the extension to make it unreadable/unusable by the IoTaWatt?