Those wired were not designed to take that mich power....Opps

Burst fire mode Test

Zero Cross detector

Power Divert V1

Isolated Triac switch

Heat shrink on the live bits

Triac switch test bench with the kettle

Test bench 1

Arduino Power Diverter Initial schematic

My plan is to have 2 contractors and a Triac.
On contactor to bypass the Triac ( for full load) , and one contactor to Isolate the Triac ( in case of problems and physical isolation )
There is one CT sensor to detect current flow in and out of the house.
Voltage is monitored so we can detect current direction and also use this for zero-crossing detector.
The rest can be done in software.