Quote:
Originally Posted by transmitterdan
Guys,
Can you get a shunt like the OP had hooked up "wrong" to give some reading? Yes, and if that's a definition of "it works" then ok, it will work. But there is significant resistance in the studs and the brass block. So there is no good way to get an accurate reading using the big studs. For a small current shunt of 25-50A the error will be negligible. But for a big 250-500A shunt the error will be significant. That's my definition of "it won't work".
If the small screw holes are damaged the "best" field fix would be to drill out and tap to next larger screw size. Or drill and tap same size holes on opposite side of shunt. All cruisers ought to have a small set of drills and taps IMO.
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Hi Transmitten, not trying to be difficult and I appreciate your knowledge in the thread.
I have drills and taps, I'm an ex
mechanic. But truly I couldn't be bothered because I just can't notice the inaccuracy. I just had the
generator on (no other input) and the reading on the
battery charger was real close to the xantrex. The xantrex was a a amp or so less, that's all, this is while pumping in 50a. I was running lights etc at the time.
If there's a difference between where I have them now and where they were it's a small one. My habits are consistent, the xantrex reads the same in the mornings etc. It's easily good enough to gauge where I'm at when I also take voltage into consideration.