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102808_CAPAC_MANUAL_MODEL_90W12D_SYSTEM.doc
flow through the water to the underwater metal through the ground wire and back
to the negative battery terminal. Wherever current enters a submerged metal
surface, the corrosion is eliminated. Once the corrosion is stopped, the metal or
hull is said to be “polarized”.
The reference electrode is insulated from the hull and the anode, and
does not receive any anode current. Since it is not “polarized”, it can be used to
monitor the amount of protection or “polarization” obtained on the hull or metal
fittings.
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