Thanks to Glyn, Robert and Bill (whose sigh of relief was heard across the Atlantic) my system seems to be up and running. However, my feeling is that the power calibration is not correct for power1-4 which I am using.
I have adjusted the scale factor for Vrms (emonhub.conf) so that my emon input reads the same as my mains (Fluke 87 III). I have a 9v AC/AC adapter purchased in the US.
On power1 &2 I have two SCT023Rs connected to the mains so I can read each plus a sum of the two feeds
On power 3 &4 I have two SCT-013-000s which read from individual breakers.
The input readings displayed seem low to me. For example, Power2 (main #2) reads 10 amps on the Fluke but shows only 542 watts on the emonCMS input (should be 10 x 123 or 1230 watts?)
Is there a way to calibrate the system without having to go into the emonTX where things have to be edited and recompiled? Can it be done by software configuration in the RPI3 + RFM69Pi_433? I’m not looking for extreme precision but something fairly accurate and easy for a layman to modify.
Thanks in advance.