RoyB wrote:
YES - all of the shunts would be mounted as close to the source as possible.
The problem is the BOTH sides of the shunt to frame ground is at the full DC CURRENT potential if it is mounted on the POSITIVE side of the battery. If you let something grounded touch the small wires feeding the meter movement it will go up in smoke in heartbeat. I guess you should always fuse both lines going to the meter movement???
Maybe it isn't that much of a problem but using the HALL EFFECT type sensor will only have the very small meter potential present on the two meter movement leads and zero potential from either one of those two wires to frame ground.
I'm not seeing the problem. Just add 2 very small fuses for your positive shunt. And since all 4 wires to the panel are already fused...
Also I wonder about the accuracy of the cheap hall effect sensor which may be accurate enough for some applications. That is as compared to the accuracy of a shunt.
