Fire alarm and maximum number of service disconnects
- Thread starter Tainted
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician
No you can exceed 6 for things like fire pumps and fire alarm.
But where does it say that in the code? Thanks!
- Location
- New Jersey
- Occupation
- Journeyman Electrician
2008 NEC:
230.72(B).
230.72(B).
I don't see a problem in adding it but playing devil's advocate (Wayne may be an influence
) but 230.72(B) seemingly addresses a separate service situation. What if the F/A disconnect is added to an existing service ???
- Location
- New Jersey
- Occupation
- Journeyman Electrician
It's additional disconnects for the things on the list that are over and above the up to 6 service disconnects of the same service.I don't see a problem in adding it but playing devil's advocate (Wayne may be an influence
Yep... Knew better than to question you
I missed the "or" in the wording and thought it only applied to additional services
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Yeah it were an additional service we wouldn't need a rule {230.72(B)} for additional service disconnects for the same service.Yep... Knew better than to question you
I'll take your word for it but I still don't understand that code reference...
What do they mean by "shall be installed remote from the one to six service disconnecting means for normal service".
Does "remote from" mean the additional service switch for fire alarm require to be in a different room?
and how does this "minimize the possibility of simultaneous interruption of supply"? that they claim
- Location
- New Jersey
- Occupation
- Journeyman Electrician
They cannot be enclosed in the same switchboard as the other service disconnects. We typically use a separate disconnect switch.
Makes more sense thanks!
The funny thing is that 230.72(B) doesn't directly tell you that you are allowed to add fire alarm and fire pump service switches if you have already have existing 6 service switches, however they imply that it is permitted because they say "shall be installed remote from the one to six service disconnecting means"
If that makes sense lol
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Yes the wording is not great but it does say "Additional Service Disconnecting Means". It's written as if there is some other section that mentions the fire pump/alarm service disconnects.
Eddie702
Licensed Electrician
- Location
- Western Massachusetts
- Occupation
- Electrician
The code does not always make sense. I think they should hire someone that knows how to write plain English like Merriam Webster dictionary.
david
Senior Member
- Location
- Pennsylvania
695.4 (B) (3)Disconnecting means.
Says a long with other things, located sufficiently remote from other building or other fire pump source Disconnecting means such that inadvertent operation at the same time would be unlikely.
Also be aware of 695.3 (A) (1) a connection located ahead of and not within same cabinet, enclosure, ..... as the service disconnecting means
The conection located and arranged to minimize the the possibility of damage by fire
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