Ragin Cajun
Senior Member
- Location
- Upstate S.C.
Let?s see if I can explain this correctly.
Background: I am designing the electrical for a multi-building apartment complex. Each building has three floors and eight apartments per floor. However, since the building is sprinkled and there is a fire wall down the middle, I can serve it from both ends. This certainly saves very long runs to the far apartments if I had to have only one service point.
On one end where I have one of the services, there also is the fire sprinkler riser. No problem. Bond the riser to that service.
At each of the two service locations I plan to have a ground rod triad. The service near the fire riser I will bond to the riser.
Since each service location has more than six meters, I plan to have a 12 multi-meter arrangement with a main breaker on each end and a 60A fused disconnect for the house panel on one end. Note, since these are 125A meters and individual apartment main breakers, six meter/breaker combo?s will fit in a section, thus, one main section and two feeder sections. Serving the house panel separately makes $ense and saves a third feeder section.
At this point I have no idea where the water meters will be for each apartment, I will likely not know where ahead of time. They may or may not be near my electric service. Depends on what the water department does/wants. In order to tie to each apartment water line I plan on running a grounding electrode conductor from the panel inside the apartment to the nearest water line in the apartment. I just don?t see any other way of doing it.
Should I also make a tie to the fire line at each apartment as well?
Any comments?
Thanks.
Background: I am designing the electrical for a multi-building apartment complex. Each building has three floors and eight apartments per floor. However, since the building is sprinkled and there is a fire wall down the middle, I can serve it from both ends. This certainly saves very long runs to the far apartments if I had to have only one service point.
On one end where I have one of the services, there also is the fire sprinkler riser. No problem. Bond the riser to that service.
At each of the two service locations I plan to have a ground rod triad. The service near the fire riser I will bond to the riser.
Since each service location has more than six meters, I plan to have a 12 multi-meter arrangement with a main breaker on each end and a 60A fused disconnect for the house panel on one end. Note, since these are 125A meters and individual apartment main breakers, six meter/breaker combo?s will fit in a section, thus, one main section and two feeder sections. Serving the house panel separately makes $ense and saves a third feeder section.
At this point I have no idea where the water meters will be for each apartment, I will likely not know where ahead of time. They may or may not be near my electric service. Depends on what the water department does/wants. In order to tie to each apartment water line I plan on running a grounding electrode conductor from the panel inside the apartment to the nearest water line in the apartment. I just don?t see any other way of doing it.
Should I also make a tie to the fire line at each apartment as well?
Any comments?
Thanks.
