Replacing an Outback FM60 with a Classic 150, what about ground fault protector?

[keithwhare]

In 2010, we installed an Outback FM60 on an Midnite E-Panel. The positive leg from the 1560watts of PV comes through a 63 AMP DC breaker then through a MidNite Solar 63 amp 150 VDC ground fault protector before getting to the FM60.

I am working on replacing the FM60 with a Classic 150 (so we can add a second PV array and a second Classic 150).

The Classic 150 has "Built in DC-GFP and Arc Fault".

Should I keep the existing ground fault protector in the sequence or remove it?

Keith

[Halfcrazy]

Remove it, When you add multiple GFP devices you add to the total fault current needed to activate them

[keithwhare]

Remove it, When you add multiple GFP devices you add to the total fault current needed to activate them

Thanks.