How to measure DC current
I am wanting to measure some of the loads (amps) on my coach. My standard multi-meter does not support this. Thinking about options. What are you folks using and any tips on ways to get reli...
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When I replaced my last meter, I chose one without high current measuring capability (it does read micro amps, which I use to troubleshoot ignition modules). I added this Tenma AC/DC clamp, which will work if you have a millivolt range on your meter.
As a note- you can also test current by using the standard blade type fuses as a shunt- turn on the load, measure the voltage between the two side of the fuse (on the top). While I don't have the figures in front of me, fuses are a reasonably well calibrated resistance- different for each value. Often you can do this just to detect a load- if you see a voltage between the fuse legs, there is a draw on that circuit (or the fuse is blown :))
As a note- you can also test current by using the standard blade type fuses as a shunt- turn on the load, measure the voltage between the two side of the fuse (on the top). While I don't have the figures in front of me, fuses are a reasonably well calibrated resistance- different for each value. Often you can do this just to detect a load- if you see a voltage between the fuse legs, there is a draw on that circuit (or the fuse is blown :))
