Hello Fluksonians,
I am looking to install a kilowatt meter or two but i am wondering about their amp rating.
I have seen talk of a 50 amp kilowatt meter connected to a pulse input which i think would be fine for my solar circuit (solar is 4.5kW).
But if i put one in my main circuit i am worried that a 50 amp unit may not be suitable. My mains supply breaker is an 80 amp breaker.
Not that i would ever want to be drawing 80 amps but i am thinking this 50 amp kilowatt meter may turn to smoke before the main breaker trips if ever there is a fault.
Has anyone else put a kilowatt meter in their main circuit? Does the meter amp rating need to be higher than the main breaker rating?
I am thinking i will either have to put in a 100 amp meter which will be difficult due to its size and the lack of space in my switchboard or just change the main 80 amp breaker for a 50 amp breaker.
My switchboard currently has an 80 amp main breaker, a 16 amp breaker (solar), 2 x 20 amp breakers (ovens), 5 x 16 amp breakers (power points) and 2 x 10 amp breakers (lights).
If i did put in a 100 amp meter i would have to swap out my 5 x 16 amp breakers (power points) and 2 x 10 amp breakers (lights) as they are all 2din safety switches and replace them with 1din safety switches. Gets expensive.
Any suggestions? I may just go with the 50 amp meter on the solar and use a current clamp for the main consumption circuit. I would have liked to have the greater accuracy of a kilowatt meter but i think the cost is going to be too high for a minor improvement.