The manual for the 100/30 & 100/50 lists the power terminals size as 16 mm² /AWG6 which has a max. amp. capacity of 37A. Fine for the 100/30, but the 100/50 would require a 21.2 mm² /AWG4 conductor (60A capacity) to carry the current. Please advise on the AWG that you have used successfully in this application.