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Originally Posted by irrig8r
I've never measured resistance "from the controller" itself... or do you mean he measured the resistance of the solenoid via the wire path to/ from the controller?
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If i had meant to include the controller i would have said "through the controller", i could have said "at the controller" which is a location, but didn't mean that. Instead i said "from the controller" which implies direction.
In hindsight i could have chosen better words but i understood my Texas friend very well.
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A reading of 180 would make me suspect a partial connection or badly corroded wire connector (as you mentioned, checking the splices).
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As you should, that's what the books say and the teachers teach.
You know what they say about "when you hear hoofbeats, think of horses not zebras"?
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Anyway, though it makes sense to suspect the insulation, please explain how you test the "short to earth"
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Adjust a DMM to 2,000kohms and insert the black probe into the earth, touch the red probe to the conductor under test. >600,000ohms look at the splice. <600,000 look at the buried wire path first.
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because it's outside of my limited knowledge and experience.
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I have no idea why that would be, you spend as much or more time with LV lighting and should be more familiar with a DMM than most of the irrigation forum members.
2wire should be a cinch for you. Voltage drop, wattage and amp calc formulas should also be second nature by now.
All that i am trying to accomplish is to bring to light a few simple tools that have been in use for decades that may help make troubleshooting easier.
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