dsaint1884
New Member
- Joined
- Jul 8, 2022
- Messages
- 42
Without any cables on the inverter at all I used a multi-meter to test continuity at different points on the inverter. The neutral and ground for the AC side are bonded, so I do get continuity there which makes sense to me.
However, on the DC side if I touch the negative DC cable connection terminal as well as the small grounding lug, I get continuity there as well. If these are somehow connected then why would I even need the grounding lug or a grounding wire? It seems like the grounding lug (as well as the metal parts of the frame for the inverter) are already bonded tot he negative DC batter output terminal somewhere in the system. So I get continuity between all of the following: the negative battery terminal, the metal inverter frame, the grounding lug, the AC ground (and the AC neutral because it's bonded to ground).
Perhaps the best way to ask the question is, should I have continuity between the grounding lug and the negative battery terminal?
However, on the DC side if I touch the negative DC cable connection terminal as well as the small grounding lug, I get continuity there as well. If these are somehow connected then why would I even need the grounding lug or a grounding wire? It seems like the grounding lug (as well as the metal parts of the frame for the inverter) are already bonded tot he negative DC batter output terminal somewhere in the system. So I get continuity between all of the following: the negative battery terminal, the metal inverter frame, the grounding lug, the AC ground (and the AC neutral because it's bonded to ground).
Perhaps the best way to ask the question is, should I have continuity between the grounding lug and the negative battery terminal?
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