Gerry Parent wrote:
Eric Hammond wrote:
Hey Gerry, sorry it wasn't something simple! I'm a little confused by some of the readings you said, mostly because without pictures its not clear what your referring to. Also, not to second guess you in any way, but I would like a picture of the meter screen when your make your measurements. We are dealing with REALLY small amounts of voltage here and the measurements are critical.
I'll snap some photos today
First, you did install the shunt in the NEGATIVE battery cable correct? Were the fasteners torqued with a torque wrench?
Yes, Shunt is on the negative cable but not secured with a torque wrench. Couldn't find any info in the setup about what torque to use....any suggestions?
You need to set your voltmeter up to read mV. I highly recommend this specific meter for ease of operation and accurate results/ with cost in mind.
For now I'm using a cheap Home Depot special volt meter but will order one of those your using as I need a better one anyways.
You'll notice on my shunt, all the terminals were coated with a conductive electrical grease (NOT di-electric)
Could you include a brand name as I do have di-electric but not what your suggesting.
Does that make sense? That should be enough info to pinpoint the culprit. It's worth noting, Voltage drop only works with the circuit intact and functioning. We cannot unplug anything to make measurements.
Yes it does make sense to me. I'll get back to you once I get more readings.
Gerry Parent wrote:Double checked that all loads ARE connected to the side leaving the shunt.
This was the only day where we turned off the inverter and the BMK amp reading was not at +1011.6 ADC but crept down about 5 amps. Then when we unplugged the power from the BMK for about a minute then plugged back in it was down to around 980amps. Thought I was onto something but then when I tried it again, it went back up to +1010 ADC.
Also, "5G Total AH OUT" has been at 0 ever since all this started and never moves. Even when the inverter and charge controller was off it still didn't move.
Got a hold of Magnum on the phone today and they said to check the milliamp reading between the orange and blue wires. We checked them on the shunt (0mV), where they attach to the BMK (2.3mV) and then disconnecting the harness from the BMK and checking again (0 mV). To me they should have all been the same but weren't.