Minimum current

1

Hi there
Does anyone know the minimum current required to get a reading using the smallest CT on a 24vac line?
Accuracy is not important.
Just want to know when a furnace gas valve has been engaged and for how long.

Thanks in advance

2

The voltage doesn’t matter. You can experiment but I think 100mA would be a good guess. IoTaWatt will report the Amps, but you would need to export it to something that can determine if running and for how long.

3

Thanks for your response.
I think I’ve figured out a better way than monitoring a 24vac line BUT do you know what the maximum distance a CT can be from the hub?
My furnace is approx 15 feet from hub.

Tx again
Ray

4

15’ is fine. If you want to increase the sensitivity you can just loop the wire through CT multiple times to get 2x , 3x etc.

1 Like
5

Thanks so much for your help :+1::grin: