Tap for fire pump switch

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cppoly

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Tapping ahead of a utility main service switch isn't considered a tap conductor for a fire pump and doesn't have to follow tap rules correct? But what about tapping an emergency generator distribution board, do these conductors have to follow the 10 foot or 25 foot tap rules?
 
For utility power no because those are service entrance conductors not tap conductors. For generator supply IMO yes but the NYC code exceptions are somewhat vague:

695.4B()(2) Generator Supply. When required to be connected to an emergency generator, fire pumps and
limited service fire pumps shall have overcurrent protection selected in accordance with the following,
except where direct connection is made in accordance with 695.4(A)(3) Exception 1:
(1) Fire Pump. Fire pumps shall be protected by an over current device selected at not less than
150 percent and not more than 300 percent of motor full load current.
(2) Limited Service Fire Pump. Limited service fire pumps shall be protected by an overcurrent
device selected at 150 percent of motor full load current. The next larger available size may be
used where selection results in a non-standard size.
(3) Disconnecting means shall be listed to accept the selected fuse or circuit breaker trip with no
modification.
(4) A tap ahead of the on-site emergency generator disconnecting means shall be required for
the fire pumps.
Click to expand...
 
Leave us do not allow ourselves to permit "language" to get in the way of "communication." We are using the word "tap" in two different scenarios. Article 240 has a definition of "tap conductors" that only applies to that article. That definition could not apply to (I will avoid the use of the word "tap" for the moment) a "connection" ahead of a service main OCPD or ahead of a generator system's first OCPD. That is because the definition of "tap conductor" says that there is an OCPD upstream, but it is rated higher than the ampacity of the tap conductors. For the fire pump, there is no OCPD ahead of the "tap point," so the conductors are not "tap conductors." QED
 
charlie b said:
Leave us do not allow ourselves to permit "language" to get in the way of "communication." We are using the word "tap" in two different scenarios. Article 240 has a definition of "tap conductors" that only applies to that article. That definition could not apply to (I will avoid the use of the word "tap" for the moment) a "connection" ahead of a service main OCPD or ahead of a generator system's first OCPD. That is because the definition of "tap conductor" says that there is an OCPD upstream, but it is rated higher than the ampacity of the tap conductors. For the fire pump, there is no OCPD ahead of the "tap point," so the conductors are not "tap conductors." QED
Click to expand...

Good point, if these are not tap conductors nor are they service entrance conductors what are they?
 
Thanks for the help so far. But another question, how would I know of this emergency power disconnect switch would be a service switch with a neutral bonded to the case or just a regular 3 pole disconnect switch?
 
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