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#1
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Electric Water Heater Grounded to Copper Water Pipes?
I live in gulfcoast Florida and have been plagued by persistent (1-2
per year) pinhole leaks in the copper pipes in our home (1990). One interesting aspect is that, so far, all the pinhole leaks have occurred in cold-water lines. I am not sure what that may indicate, but, perhaps, someone has an opinion. I have read many of the posts concerning the many theories for the causes of this problem, i.e., acicidity, electrical currents, chemicals, minerals, etc. Regarding possible electrolysis and stray electrical currents, I installed a new grounding rod on the main electrical box outside the house (right near where the water line enters, incidently). However, I noticed that my second-floor electric water heater is grounded to the copper piping adjacent to the heater. Having read a lot of posts commenting on the need to isolate electrical currents from the water system, why would a water heater be grounded to the water pipes? Does this make sense? Should it be changed? Any suggestions for diagnosing and/or addressing this pinhole problem would be appreciated. |
#2
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Electric Water Heater Grounded to Copper Water Pipes?
wrote in message oups.com... I live in gulfcoast Florida and have been plagued by persistent (1-2 per year) pinhole leaks in the copper pipes in our home (1990). One interesting aspect is that, so far, all the pinhole leaks have occurred in cold-water lines. I am not sure what that may indicate, but, perhaps, someone has an opinion. Probably something in the water. A water heater has an anode (think that is the correct name) in it that is made to be eaten away by the chemicals in the water. It is a rod of special metel that is usually attached to a pipe plug that goes into the water of the tank. Saves the tank. By now yours is probably just about gone. |
#3
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Electric Water Heater Grounded to Copper Water Pipes?
wrote in message oups.com... I live in gulfcoast Florida and have been plagued by persistent (1-2 per year) pinhole leaks in the copper pipes in our home (1990). One interesting aspect is that, so far, all the pinhole leaks have occurred in cold-water lines. I am not sure what that may indicate, but, perhaps, someone has an opinion. I have read many of the posts concerning the many theories for the causes of this problem, i.e., acicidity, electrical currents, chemicals, minerals, etc. Regarding possible electrolysis and stray electrical currents, I installed a new grounding rod on the main electrical box outside the house (right near where the water line enters, incidently). However, I noticed that my second-floor electric water heater is grounded to the copper piping adjacent to the heater. Having read a lot of posts commenting on the need to isolate electrical currents from the water system, why would a water heater be grounded to the water pipes? Does this make sense? Should it be changed? Any suggestions for diagnosing and/or addressing this pinhole problem would be appreciated. The other poster had a good idea changing the anode in the water heater. All appliances, loads should be grounded to the service by use of an conductor. Not by using a water pipe. Suggest you run a proper circuit to the water heater. Stop guessing and try to find someone who has the equipment that can measure the ground system. Amec makes a meter for ~$2k. Measures both ohms and volts. Get a decent VOM meter and start taking some measurements. Sadly this could get really expensive to find. |
#4
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Electric Water Heater Grounded to Copper Water Pipes?
A plumber I see from time to time on different jobs once told me about bad
copper piping coming out of Mexico. He said that on one job that he used the stuff many pinholes showed up after the system was pressurized. Perhaps you have crummy pipes. Do your neighbors have similar problems? You could also have your water tested to see if that is a contributing factor. Regarding the upstairs water heater being grounded to the water pipe, I suggest that you leave it alone. It may not be a grounding connection, but it may be a bonding connection. I doubt that electrical current on your water pipes is causing the pin holes to develop. wrote in message oups.com... I live in gulfcoast Florida and have been plagued by persistent (1-2 per year) pinhole leaks in the copper pipes in our home (1990). One interesting aspect is that, so far, all the pinhole leaks have occurred in cold-water lines. I am not sure what that may indicate, but, perhaps, someone has an opinion. I have read many of the posts concerning the many theories for the causes of this problem, i.e., acicidity, electrical currents, chemicals, minerals, etc. Regarding possible electrolysis and stray electrical currents, I installed a new grounding rod on the main electrical box outside the house (right near where the water line enters, incidently). However, I noticed that my second-floor electric water heater is grounded to the copper piping adjacent to the heater. Having read a lot of posts commenting on the need to isolate electrical currents from the water system, why would a water heater be grounded to the water pipes? Does this make sense? Should it be changed? Any suggestions for diagnosing and/or addressing this pinhole problem would be appreciated. |
#5
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Electric Water Heater Grounded to Copper Water Pipes?
Many thanks for your suggestions and those of all others, too. Will
conduct further investigation and implement suggested solutions. Thanks again. |
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