I'm considering monitoring the power of each individual branches in my breaker box and would like to add a current transformer at each leg. Does anyone know of a source of surplus current transformers (split core preferably) for a project like this? New ones are going to cost a fortune. I've seen where a fellow used the core material from old monitor flyback transformers to wind his own. I would be happy doing that If I could find the transformer material.
Thanks jim WB5KYE