Grounding/bonding water service @ commercial office buil
- Thread starter ERB
- Start date
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charlie
Senior Member
- Location
- Indianapolis
Re: Grounding/bonding water service @ commercial office buil
Unfortunately, you must meet 250.52(A)(1) and go to the other end of the building with your grounding electrode conductor.
Unfortunately, you must meet 250.52(A)(1) and go to the other end of the building with your grounding electrode conductor.
sandsnow
Senior Member
- Location
- Southern California
Re: Grounding/bonding water service @ commercial office buil
There's a chance 250-104(A)(2) may apply. They have to be metallically isolated. Then you can bond each system in each unit. If they are metal all the way to a common point on the supply side then as Charlie says you have to go all the way.
There's a chance 250-104(A)(2) may apply. They have to be metallically isolated. Then you can bond each system in each unit. If they are metal all the way to a common point on the supply side then as Charlie says you have to go all the way.
pierre
Senior Member
- Location
- Westchester County, New York
Re: Grounding/bonding water service @ commercial office buil
How about if there is effectively grounded steel in this building, and you install the GEC to the steel and bond the cold water to the steel as part of the GEC System?
Pierre
How about if there is effectively grounded steel in this building, and you install the GEC to the steel and bond the cold water to the steel as part of the GEC System?
Pierre
charlie
Senior Member
- Location
- Indianapolis
Re: Grounding/bonding water service @ commercial office buil
Pierre, that is one of the problems with reading a question instead of talking to someone in person or even on the phone. I was thinking about a commercial building that was of frame construction and didn't have a steel structure that you could use. I wonder is steel is available so that can be done? Good catch.
Pierre, that is one of the problems with reading a question instead of talking to someone in person or even on the phone. I was thinking about a commercial building that was of frame construction and didn't have a steel structure that you could use. I wonder is steel is available so that can be done? Good catch.
Re: Grounding/bonding water service @ commercial office buil
Thanks for the responses. This is not a metal building. What they did was to extend a water pipe from one of the units closest to the meter room and bond that to the conductor running to the ground rod. This was done when no connection could be found. Building was built in early 1980's. If this is a continuous copper water system is that sufficient for all the units? What if plastic pipe was used? Were requirements different in early 1980's?
Thanks for the responses. This is not a metal building. What they did was to extend a water pipe from one of the units closest to the meter room and bond that to the conductor running to the ground rod. This was done when no connection could be found. Building was built in early 1980's. If this is a continuous copper water system is that sufficient for all the units? What if plastic pipe was used? Were requirements different in early 1980's?
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