1st time user,
New construction, 300 apt. residence, ordinary, sprinklers, 6 storys, not a high rise.
This building has a generator. The Utility qualifies as a reliable source.
Is the Fire Pump required to be connected to the emergency generator?#
Which building and fire code do you have adopted?? and year.
So they are providing a generator already??
If so I would say hook it up.
What is it powering anyway?
OHHH I am not an engineer, so you can discount my reply if you want, and I cannot do math.
(1) IBC 2015 NJ edition --- NFPA 13 & 72 2013
(2) Only to emergency systems ie: fire detection, egress lighting.
(3) I agree but it is a considerable amount of work and cost to upgrade the generation system.
(4) Detection, egress, elevators
Interesting, The fire alarm should already have battery back up, and the
Lighting may or may not have battery back up?
I guess someone sold them a generator.
They do, they provide support during the generator transition time. Elevators are also protected.
It's not required by NFPA 20 for non high-rise's fire pumps to connect to a secondary source when the primary source is considered reliable. See NFPA 20 section 9.3. Usually a primary source is considered reliable is if it is unavailable no more than 8 hours per year.
I do think that if the construction is in a disaster prone area and budget allows, it should also be connected to an emergency generator even if the primary is considered reliable.
I agree, thank you.
It has been many years since I designed a fire pump installation, but as I recall, it has to be on a separate service and any generator supplying it has to be standalone; i.e., it cannot have the life safety equipment attached to it. If a generator is being supplied that was intended only for the life safety equipment during design, it is probably not large enough to carry the fire pump. First, it has to be able to supply the starting current of the motor; and second, it has to be able to withstand the locked-rotor current of the motor long enough for the fuses/breaker to clear that overload. And there are special requirements for sizing the fuses supplying the pump motor. Essentially, it is designed to almost "burn-down" the system before removing power.
ASSOCIATED CODE REFERENCES
NFPA 20, 2010 ed: STANDARD FOR THE INSTALLATION OF STATIONARY PUMPS FOR FIRE PROTECTION 
NFPA 70, 2014 ed: NATIONAL ELECTRICAL CODE HANDBOOK [NEC]
ARTICLE 695: FIRE PUMPS
NFPA 72: FIRE ALARM AND SIGNALING CODE [FAC]
REF. FIRE ALARM SYSTEM MONITORING OF FIRE PUMP STATUS
NFPA 1: FIRE CODE [FC]
NFPA 101: LIFE SAFETY CODE [LSC]
NFPA 5000: BUILDING CONSTRUCTION AND SAFETY CODE [IBC]
INTERNATIONAL BUILDING CODE:
CHAPTER 13 AND ARTICLE 403.4.9
RELIABLE POWER DEFINITION
Ref. NFPA 20 Annex A.9.3.2
NFPA 70 Article 695.3: Power Sources for Electric Motor-Driven Fire Pumps
695.3[A] Individual Sources
 The Power Plant [Utility] has not experienced any shut-downs longer than 4 continuous hours in the year prior to plan submittal
 Power outages have not routinely been experienced in the area of the protected facility .....
 The Normal source [Utility] of power is not supplied by overhead conductors outside the protected facility.
[4[ Only the disconnect switches and Overcurrent Protection Devices [OCPD] permitted by 9.2.3 are installed in the Normal Power Source.
NOTE: A visit to the Fire Department Responders is in order to verify their equipment can pump the required water
the height of the facility. If Items  thru  have been satisfied and this requirement is not satisfied, then a
a Reliable 2nd power source is required; ie an On-Site Stand-By Generator
When an On-Site Generator and the Individual Power Source [Utility] occurs, then NEC Articles 695.3 [B] and
695.3[D] apply. Discussion: You indicate their is an existing generator at the Facility, therefore, I assume an Automatic
Transfer Switch [ATS] exists', this ATS cannot be utilized for the Fire Pumps. Reference NEC Article 695.3[F] Transfer
of Power [ie power to the Fire Pumps from the generator source ]. The power transfer "MUST" occur at a dedicated
and "Fire Pump Listed" ATS located in the Fire Pumps room and "MUST" be served by the Individual Power Source
on the ATS Utility side.
Reference NEC Articles 695.3[D] and NFPA 20 Article 18.104.22.168
"The generator shall have sufficient capacity to allow normal starting and running of the motor's [fire and pressure]......
while supplying all other simultaneously operated loads [100%]
NOTE: The Individual Power Source [Utility] connection to the Fire Pumps OCPD must be sized at the Pumps
Locked Rotor Ampere plus any additional loads associated with the Fire Pump room/operation NEC 695.3[A].
The OCPD for the On-Site Generator when utilized as the alternate power source for the Fire Pumps IS NOT
required to be sized for Locked Rotor Amps; Ref NEC 695.3[D] Handbook note and NFPA 20 Article 22.214.171.124.
After consultation with the Utility and the Responding Fire Department and have received a written responce that
they concur and meet the "Reliable Power" requirements, then per the Codes listed, a generator or any other reliable power source is not required.
However, My question is why a Fire Pump? Providing a Fire Pump leads me to believe that insufficient water pressure
exists to address a 6 story facility. If this is the case then a second Reliable Power Source would be required.
The facility is Multifamily and 6 story as indicated by your information; I would provide 2 sources of power.
My responce has been directed to your question and does not delve into the other multiple requirements associated with the Installation of Fire Pumps as delineated the mention codes. I recommend you contact someone familiar with the
governing codes/standards to provide an acceptable Fire Pump installation.
Have A Great Day
Harvey Peel, PE
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