I have a HPWC hooked to a 50 amp breaker and I'd like to capture the true amount of electricity that my MX uses, including charging, the amount of electricity used to pre-heat or pre-cool the vehicle, etc. Has anyone used a device like a clamp-on amp meter, either near their breaker panel or near the wall charger itself, that continually gathers that data either for download or pushes it to a service that can report on it?