Solar fuses
Fuses for the solar system protect the wire from in case there is a short. The fuse is a safety precaution.
Solar wire
The wires on your solar panels are like the water pip[es in your home, but instead of carrying water, they carry the electricity you need to charge your batteries and power your devices. Wire gauges and connectors vary by system.
Charge Controllers
A solar charge controller is the brains of a charging system. The solar controller determines when and how the solar panels charge your batteries based on several factors. This protects your batteries from being overcharged from your solar kit.