AC panel Meter with 100 amp current transformer
Link: http://www.mpja.com/08-10-17100 amp.asp?r=179748&s=3 Great for 30 amp RV's See your AC voltage and how much current you are drawing on one panel meter.
Forum Discussion
Matt_Colie wrote:
What I am still working on is how to get a current transformer to read right for both 30 and 50 amp shore power. The coach is wired for 50 but we frequently have to settle for 30.
No fancy switching is allowed and it has to be internal to the coach.
Matt
I'm thinking you could calculate it by using a coil on one leg and another on the neutral. For 50 amp service, the second leg would be the difference between the neutral and one sensed leg. For 30 amp, the readings off both coils would be the same. Or you could just use 3 coils, the neutral for 30 amp service.
An arduino or Raspberry pi could do this automagically pretty easily.
