Disconnect all power sources before attempting installation. Electricity can be very dangerous. Installation should be performed only by a licensed electrician or qualified personnel.
Solar Module Safety.
Photovoltaic modules generate DC electricity when exposed to sunlight or other light sources. Contact with the electrically active parts of the module, such as terminals, can result in burns, sparks and lethal shock whether the module is connected or disconnected.
When modules are connected in parallel, amperages are additive. Consequently, a system assembled from photovoltaic modules can produce high amperages, which constitute an increased hazard.
Do not touch terminals while module is exposed to light. Cover the module face completely with opaque material to halt the production of electricity when installing or working with modules or wiring.
Observe all safety precautions of the battery manufacturer when handling or working around batteries. When charging, batteries may produce explosive hydrogen gas. Work in a well ventilated area and use caution when making or removing electrical connections. Ensure wires are disconnected from their power sources when wiring. Do not expose battery to open flame, cigarettes, or sparks. Shield skin and eyes from battery acid.
Ensure all connections are tight and secure. Loose connections may generate sparks.
Wear protective eyewear and appropriate clothing during installation. Use extreme caution when working with electricity and when handling and working around batteries. Use properly insulated tools only.
Observe correct polarity at all times.
Any contact in reverse polarity, however brief, will cause the regulator and/or inverter fuse to blow and may damage the unit.
Do not exceed the voltage and current ratings of the regulator.
The total current of the solar system is the sum of the short circuit current of the solar modules in parallel multiplied by a safety factor of 1.25. The resulting system current is not to exceed the amerage rating of the regulator. The voltage of the array is the rated open circuit voltage of the solar modules and is not to exceed 26 volts for a 12 volt system. The current rating of the solar system is the sum of the Maximum Power Current (lmp) of the solar PV strings in parallel. The resulting system lmp current is not to exceed 30 A. The voltage of the array is the rated open circuit