We give below a number of recommendations that are applicable to the majority of charge controllers; however, it is important to follow the instructions given by the manufacturers, which may be different in some cases.
Mechanical installation of charge controllers
A charge controller should be installed near the batteries and in a location with easy access so that its indicators and measuring instruments can be monitored. If the installed power is high (>100 W), good circulation of air must be ensured to cool the blocking diodes and the transistor switches. The ideal situation for a small system is against a wall at eye level above the batteries. Cabling connected to the regulator will be fixed and clearly identified for future maintenance. The output cables will be always on the bottom of the regulator or possibly on the side (with additional precautions) to avoid any penetration of water running down a cable. If the cabinet is situated outside, the ‘water drop’ rule must be respected and the wiring should enter the cable gland via a U loop (Figures 5.46 and 5.47).