Re: Ohm help
Bad wire/cable, correct.
The erratic reading may be due to the meter averaging function.
Also, the lead-to-surface contact. every surface is not smooth as you look under a microscope, hills and valleys.
As a lead is slid across a surface, a new contact point is made from the last one, and the meter averages out again.
Another tip is when holding or clamping work against the meter lead/probe, don't touch the work/lead ends, human body/skin resistance is added in parallel to the work being measured.
Proof in point: moisten each index finger and thumb of each hand and hold a lead in each hand. Meter reads resistance. If holding an item for measuring in the same fashion, the resistance of the skin is taken into measurement along with the load being measured.
I have Fluke 70 series, 73, 75, and 77 at home for usage.
I have a Harbour Freight meter, catch on sale for $5, in every vehicle glovebox for on the road. If stolen, not a big expense.
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