You meant that water main had 0.5 A when you turned off your main breaker? Then the mysterious current must come from outside, your neighbors. You can install a dielectric union on your water main to cut off the current , but to be code compliant, you may have to dig out a underground water pipe , distant away from when it entries your home, 8' ~ 10', at least, so this section of the underground pipe can still serve as grounding. Or you can install the dielectric union on water main in the basement, but you have to drive another grounding rod. There is some youtube video on how to do this. Hope the fix you already did was code compliant.
【在 t*********u 的大作中提到】 : You meant that water main had 0.5 A when you turned off your main breaker? : Then the mysterious current must come from outside, your neighbors. : You can install a dielectric union on your water main to cut off the current : , but to be code compliant, you may have to dig out a underground water pipe : , distant away from when it entries your home, 8' ~ 10', at least, so this : section of the underground pipe can still serve as grounding. Or you can : install the dielectric union on water main in the basement, but you have to : drive another grounding rod. There is some youtube video on how to do this. : Hope the fix you already did was code compliant.
【在 p*****a 的大作中提到】 : 非常非常感谢你的专业回答!现在仍然有些问题想请教!!! : 目前在地下室的总进水管处用PVC管换了一段铜管,电流没有了。室外的话工程太大。 : 我们考虑了接地的问题。现在室内的铜水管没有接地。但在总电闸的室外有一根接地杆 : ,所以觉得室内的电线应该已经接地了? 还是code要求铜水管必须要接地? : : current : pipe : to
t*u
44 楼
I think that is fine too. But you have to make sure that your ground/neutral bus on the main panel is connected to the water main "after" your newly installed PVC, just in case some of your circuits used your water pipe as grounding. Maybe you can the plugtester adf suggested to go over all your power outlets to see if it pass the tests.
【在 p*****a 的大作中提到】 : 非常非常感谢你的专业回答!现在仍然有些问题想请教!!! : 目前在地下室的总进水管处用PVC管换了一段铜管,电流没有了。室外的话工程太大。 : 我们考虑了接地的问题。现在室内的铜水管没有接地。但在总电闸的室外有一根接地杆 : ,所以觉得室内的电线应该已经接地了? 还是code要求铜水管必须要接地? : : current : pipe : to
【在 t*********u 的大作中提到】 : I think that is fine too. But you have to make sure that your ground/neutral : bus on the main panel is connected to the water main "after" your newly : installed PVC, just in case some of your circuits used your water pipe as : grounding. : Maybe you can the plugtester adf suggested to go over all your power outlets : to see if it pass the tests.
t*u
46 楼
应该是可以了, 但如果不放心,可以就近把水管和确认接地的插座的地线连接上。 BTW, glad that it helps.