I installed the same controller about 4 years ago - wired up as per instructions provided in the manual. Never had an issue with the wiring
or suitability of the product. Extremely happy, in fact.
Went thru Force 12 winds/seas coming out of New Zealand
(ref prior posts elsewhere), got nailed, lots of boat damage, seawater flying about the motor
room where the controller is mounted - but NEVER had problems or troubles with the solar
controller nor with the wiring/connections.
Just my practical experience. YMMV......
'Course, during that big blow it sure helped that the solar panels
were double-secured with extra lines!