Several Ins and outs which might be helpful involve ferrules and shrink sleeves. If the connecting box has slots wherever the wire inserts into the slot and is then locked into area which has a screw clamp, then a ferrule is helpful, Specifically wherever the wire is a twisted bundle https://hector78z12.laowaiblog.com/34570169/rumored-buzz-on-solar-cell-system-for-home