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Old 06-26-2015, 09:26 PM   #1
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Anode in hot water tank

Not sure on this but is there a 12v Anode in the hot water tank to stop it rusting inside, the idea is to put a kill switch on the battery when the TT is parked up for a couple of months of none use, if there is an Anode and I do disconnect the power then the Anode will not do its job, the TT is an Coachmen Apex 22QBS(2014 model) Cheers
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Old 06-26-2015, 09:30 PM   #2
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Do you have a Suburban WH or an Atwood WH?
Surburban has an anode and the Atwood doesn't.
Anode is not there to prevent rust.
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Old 06-26-2015, 09:34 PM   #3
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Also Anode's aren't 12 volt powered just sacrificial.
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Old 06-26-2015, 09:34 PM   #4
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The anode does NOT require any voltage to do its job.
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Old 06-26-2015, 09:41 PM   #5
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The anode does NOT require any voltage to do its job.
Beat you to the punch OC
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Old 06-26-2015, 09:44 PM   #6
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Beat you to the punch OC
Getting slow in my old age.
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Old 06-26-2015, 09:46 PM   #7
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Do you have a Suburban WH or an Atwood WH?
Surburban has an anode and the Atwood doesn't.
Anode is not there to prevent rust.
Its a Suburban water heater.
Found this, very interesting reading it, Thanks all for posts.


http://www.waterheaterrescue.com/pag...er-anodes.html
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Old 06-26-2015, 09:57 PM   #8
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Its a Suburban gas water heater, so how does the Anode work.
From: https://en.wikipedia.org/wiki/Galvanic_anode
A galvanic anode is the main component of a galvanic cathodic protection (CP) system used to protect buried or submerged metal structures from corrosion.

They are made from a metal alloy with a more "active" voltage (more negative reduction potential / more positive electrochemical potential) than the metal of the structure. The difference in potential between the two metals means that the galvanic anode corrodes, so that the anode material is consumed in preference to the structure.

The loss (or sacrifice) of the anode material gives rise to the alternative name of sacrificial anode.
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Old 06-26-2015, 09:58 PM   #9
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Go ahead OC you got the tech talk
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Old 06-26-2015, 10:05 PM   #10
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Quote:
Originally Posted by OldCoot View Post
From: https://en.wikipedia.org/wiki/Galvanic_anode
A galvanic anode is the main component of a galvanic cathodic protection (CP) system used to protect buried or submerged metal structures from corrosion.

They are made from a metal alloy with a more "active" voltage (more negative reduction potential / more positive electrochemical potential) than the metal of the structure. The difference in potential between the two metals means that the galvanic anode corrodes, so that the anode material is consumed in preference to the structure.

The loss (or sacrifice) of the anode material gives rise to the alternative name of sacrificial anode.
What OC said...The corrosion that might otherwise "eat up" the inside of the water heater tank instead "eats up" the sacrificial anode. Eventually, that anode will be eaten away to just a thin wire. before that happens and it is entirely gone, it should be replaced. 2 to 3 years seems like the average life of the anode before it needs to be changed, but it should be inspected at least once a year.

We now return you to "tech talk" with OldCoot
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