I have a off grid installation and I fully understand the need for good earthing on the AC slide of the system and the requirements for adequate earth leakage protection devices, for personal and fire protection.
But I don't understand the need to ground the battery negative on a off grid installation, please can anyone explain the necessity to earth the battery negative?
I have read the excellent documentation "Wiring Unlimited" produced by Victron Energy, a very worth while read, it explains the process of DC earthing, but not the reason why.
Please can anyone enlighten me as to the need for battery negative earthing?
Many thanks