thanks gt4020 and nickrout. I have completed my project and attached coil to the live wire. @nickrout diagrams from https://innovatorsguru.com/pzem-004t-v3/ shows coil on neutral but as you guys explained that doesn’t meters.
One more question. Coil that comes with pzem has very short cable. Can I extend this cable a little bit? I am wandering if that will have an negative effect on true readings.
