Load Calculations For Emergency Sprinkler System

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RobGTheEngineer

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I am trying to do a load calculation for a building, and I was wondering if I can discount to load of the 5hp water pump in the emergency fire alarm system. Any help is appreciated.
 
I'm not sure I understand the question. What do you mean "discount"? What are you trying to achieve?
 
By discounting I mean, taking a percentage of the full load for the pump. The pump hopefully never runs, so why would you take 100% of the pumps load into account when calculating the load of the building.
 
RobGTheEngineer said:
By discounting I mean, taking a percentage of the full load for the pump. The pump hopefully never runs, so why would you take 100% of the pumps load into account when calculating the load of the building.
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you are worried about a 5Hp pump?
 
Yes, this 5 hp pump makes or breaks my 400 amp service, and ths is the largest size service I can get in the area the building is being constructed.
 
RobGTheEngineer said:
Yes, this 5 hp pump makes or breaks my 400 amp service, and ths is the largest size service I can get in the area the building is being constructed.
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normally the ventilation system shuts off when the fire alarm trips. since they can't be on at the same time, maybe you can use the non-simultaneous load idea.

If I were the building owner, I would be real nervous about having a building that close to the maximum juice I can pull. There are few buildings that ever use less power over time, almost all end up using more.
 
RobGTheEngineer said:
Is their anything about the ventilation system shutting off when the fire alarm turns on in the NEC?
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I think if i am right the NEC is kinda quiet on this issuse here but the NFPA will have it on the listing kinda like more building code but i am not sure if that will be in NFPA or IBC or other i will let other speak up with this item .

Merci , Marc
 
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