Breakers and shunts

[DeltaFox 25]

Could you explain to me what a shunt does . I found a curcuit breaker and they said the shunt went along side the breaker. Where does the shunt hook up to and what does it do.

[Mike90250]

The SHUNT is a calibrated piece of wire, used to measure AMPS flowing through the circuit. The can get warm or even hot, I don't know that I'd park it next to a circuit breaker. The voltage across it (just a couple of millivolts) is used to calculate the amps flowing.

[DeltaFox 25]

Thank you very much. I didn't know if I should buy the cercuit braker and the shunt togeather.

[Mike90250]

You need a Ckt Bkr to protect your wires and prevent a fire.

Shunts for amps, are optional measurements.

Battery Temperature Sensor for your charge controller, should be present, to provide correct charge voltage for your battery.

[DeltaFox 25]

I am buying a new Morningstar 60 AMP MPPT charge controler and a tempiture probe . It will be coming in December.
I need to put a fuse between the charge controler and the batteries. I already have one from the batteries to the inverter.
Thank you

[Mike90250]

I am buying a new Morningstar 60 AMP MPPT charge controler and a tempiture probe . It will be coming in December.
I need to put a fuse between the charge controler and the batteries. I already have one from the batteries to the inverter.
Thank you

Do you know your array size/wattage, and battery bank voltage? Just take your array watts, and divide by your battery bank voltage, and you will have MAX amps to size your fuse and wires to. This is a crude way, but likely within 10% of the "right" value.

[DeltaFox 25]

Thank you Mike.