KeepItSimpleStupid
- Joined Mar 4, 2014
- 5,088
Measuring low resistance is tough to do. Having 4 or 5 wire ohms helps and so does a zero control.
To measure a low resistance, you need to pass a current and use your meter to measure the voltage across a fixed length and compute R.
The current is the same through the wire everywhere and therefore any series resistances don't count
That aside, since you were getting consistent readings. Likely things to happen is shorts and shorts would generally result in lower resistance, so therefore:
1. Make sure the capacitor is disconnected.
2. You could pick up extra resistance when you made splices or any connections.
3. There is something called contact resistance
To measure a low resistance, you need to pass a current and use your meter to measure the voltage across a fixed length and compute R.
The current is the same through the wire everywhere and therefore any series resistances don't count
That aside, since you were getting consistent readings. Likely things to happen is shorts and shorts would generally result in lower resistance, so therefore:
1. Make sure the capacitor is disconnected.
2. You could pick up extra resistance when you made splices or any connections.
3. There is something called contact resistance