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Old 11-08-2018, 02:33 PM   #16
foggysail
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City: Ashland, MA
Vessel Model: 1990 Silverton 40 aftcabin
Join Date: Jul 2016
Posts: 1,208
Quote:
Originally Posted by Simi 60 View Post
Keep hearing about these reference anodes but the marine electricians i have used here do no more run a long wire from water to multimeter to fitting.

What magic does a reference anode actual do?
Essentially it forms a battery whereby one half of the battery’s cell is the the metal being tested and the other half is that of the reference anode. The tested voltage is the measurement made between the reference cell and the metal that one desires to be protected from galvanic corrosion.

NOTE—- there has to be a conductive solution between the two metals (reference cell and the tested metal)
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