hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Attached sketch shows Apartment complex Cluster #1 which is made up of building #8, 7, 6, 5, 4. Each if the building are three floors and have dwelling units. Building #7, #5 has electric room and meter stacks which feed the dwelling units.
The attached sketch shows one main underground water pipe splitting underground in street and one underground water pipe going to building #4, second going to building #5, third going to building #6, fourth going to building #7 and fifth going to building #8.
Attached sketch also show main service switchboard outside feeder FDR #1 feeding 1000A panelboard A on outside wall of the Cluster#1. The panelboard A has four feeder breaker with each feeders FDR#3,2 go underground, come up feeding Building 7 electric room meter stacks and FDR #4,#5 go underground, come up feeding Building #5 electric room meter stacks.
Attached sketch also shows Grounding electrode conductor labeled “GEC to underground water pipe “ from Panelboard A to underground water pipe in building #7.
Outside Main service switchboard has feeder breaker with feeder FDR #1 feeding the cluster #1 1000A panelboard A. Thus FDR #1 is outside feeder.
Questions:
1. Does NEC 2014 require Panelboard A need to have one GEC to Building 8 underground water pipe, second GEC to Building 6 underground water pipe, third GEC to Building 5 underground water pipe, fourth GEC to Building Building 4 underground water pipe Or I can have one GEC from Panelboard A to Building 7 underground water pipe as shown in attached sketch?
2. Panelboard A FDR#2,3,4,5 shown attached sketch when they come-up from underground go into building to meterstacks right where they enter each require disconnect or not?
3. This is residential area so I can imagine kids playing, people walking etc. panelboard A and switchboard would be locked. However Does NEC 2014 require fence around outside switchboard and fence around outside panelboard or not? If yes then which section? Is it 110.27(A)?
The attached sketch shows one main underground water pipe splitting underground in street and one underground water pipe going to building #4, second going to building #5, third going to building #6, fourth going to building #7 and fifth going to building #8.
Attached sketch also show main service switchboard outside feeder FDR #1 feeding 1000A panelboard A on outside wall of the Cluster#1. The panelboard A has four feeder breaker with each feeders FDR#3,2 go underground, come up feeding Building 7 electric room meter stacks and FDR #4,#5 go underground, come up feeding Building #5 electric room meter stacks.
Attached sketch also shows Grounding electrode conductor labeled “GEC to underground water pipe “ from Panelboard A to underground water pipe in building #7.
Outside Main service switchboard has feeder breaker with feeder FDR #1 feeding the cluster #1 1000A panelboard A. Thus FDR #1 is outside feeder.
Questions:
1. Does NEC 2014 require Panelboard A need to have one GEC to Building 8 underground water pipe, second GEC to Building 6 underground water pipe, third GEC to Building 5 underground water pipe, fourth GEC to Building Building 4 underground water pipe Or I can have one GEC from Panelboard A to Building 7 underground water pipe as shown in attached sketch?
2. Panelboard A FDR#2,3,4,5 shown attached sketch when they come-up from underground go into building to meterstacks right where they enter each require disconnect or not?
3. This is residential area so I can imagine kids playing, people walking etc. panelboard A and switchboard would be locked. However Does NEC 2014 require fence around outside switchboard and fence around outside panelboard or not? If yes then which section? Is it 110.27(A)?
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