I have my IoTAWatt devices and CTs, and I reviewed the installation plans with my electrician…
We have 1600amp 480Y/277V main service, split into 4 feed legs, for which I have 12 400amp CTs.
One point we’re not clear on, is how we’re supposed to setup the voltage reference transformers on a 480Y/277V WYE 3-phase service.
Should we install three 277v to 120v transformers, and then plug in the three 120v to 9v reference voltage transformers to that?
How do we tell Iotawatt that we’re running 408Y/277V service under the voltage reference? I didn’t see anything in the manual about this.
Is there some other recommended way to get a reference signal for 480v WYE service?