MPPT solar charger manual 1.2. Wiring safety precautions Use flexible multi-stranded copper cable for the battery and PV connections. The diameter of the individual strand of the cable used should not exceed 0.4mm (0.016 inch) or have a surface area exceeding 0.125mmІ (AWG26). The maximum operating temperature is 90°C (194°F). A 25mmІ cable, for example, should have at least 196 strands (class 5 or higher stranding according to VDE 0295, IEC 60228 and BS6360). An AWG2 gauge cable should have at least 259/26 stranding (259 strands of AWG26). Example of suitable cable: class 5 “Tri-rated” cable (it has three approvals: American (UL), Canadian (CSA) and British (BS)).
In case of thicker strands the contact area will be too small and the resulting high contact resistance will cause severe overheating, eventually resulting in fire. See below figure for examples of what cable to use and not to use. 1.3. Symbols used on the enclosure The following symbols are used on the solar charger enclosure: Page 2 Safety precautions Symbol Name Meaning Danger of electric shock warning Do not touch the electric connections, there is danger of electrical shock. Hot surface warning Do not touch the surface of the appliance, while it is running, it will get hot. Read the manual instruction Read the product manual before installation and use.
Ingress protection value IP43 - The electronic components are protected from tools and small wires greater than 1 millimetre and protected from water spray less than 60 degrees from vertical. Ground symbol Indicates the position of the chassis ground connection.