Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
Have you guys ever seen EM/NL fixtures that are fed from an EM panel which is feed from a generator still require an EM ballast? THanks.
Have you guys ever seen EM/NL fixtures that are fed from an EM panel which is feed from a generator still require an EM ballast? THanks.
Have you guys ever seen EM/NL fixtures that are fed from an EM panel which is feed from a generator still require an EM ballast? THanks.
Is the panel and generator really an emergency generator or could it be a standby generator?
What other types of loads does this panel supply?
Since these are generator backed up NL (night lights) the additional battery is likely a design issue not a requirement. You would need to know if the system is covered under Article 700 or 702. Article 701 has been deleted from the NYC Electrical Code.
Most generator projects that I design are Article 702 and would still require batteries at the EM fixture.
700.1 Scope. The provisions of this article apply to the
electrical safety of the installation, operation, and maintenance
of emergency systems consisting of circuits and
equipment intended to supply, distribute, and control electricity
for illumination, power, or both, to required facilities
when the normal electrical supply or system is interrupted.
Emergency systems are those systems legally required
and classed as emergency by municipal, state, federal, or
other codes, or by any governmental agency having jurisdiction.
These systems are intended to automatically supply
illumination, power, or both, to designated areas and equipment
in the event of failure of the normal supply or in the
event of accident to elements of a system intended to supply,
distribute, and control power and illumination essential
for safety to human life.
702.1 Scope. The provisions of this article apply to the
installation and operation of optional standby systems.
The systems covered by this article consist of those that
are permanently installed in their entirety, including prime
movers, and those that are arranged for a connection to a
premises wiring system from a portable alternate power
supply.
702.2 Definition.
Optional Standby Systems. Those systems intended to
supply power to public or private facilities or property
where life safety does not depend on the performance of the
system. Optional standby systems are intended to supply
on-site generated power to selected loads either automatically
or manually.
I have my code book and don't see where that is called for.
I think what Ron is trying to say is that 702 covers optional standby... meaning not essential to human safety and batterys would be required in the exit lights.
A article 700 install would only be there to serve loads that are essential to human safety... hence the batterys would not be required for the exit lights if it were an actual 700 install.
Pete
THanks. But basically it comes down to what load the generator supplies. Any lighting served by the generator would not need battery packs. Correct? Or just because it is served by the generator does not mean it is "essential for life safety"? Thanks.
The genset feeds a 800a panel that feeds a few em panels. THese em panels feed a few HVAC. One EM panel feeds "exits & em" lights. So the lights on the drawings are just "em" and some are "em/nl".
The genset feeds a 800a panel that feeds a few em panels. THese em panels feed a few HVAC. One EM panel feeds "exits & em" lights. So the lights on the drawings are just "em" and some are "em/nl".
From what you describe this would be a 702 install. Your exit lights and egress lighting would need batterys.
Pete
From what you describe this would be a 702 install. Your exit lights and egress lighting would need batterys.
Pete
I don't understand why batterieds are needed if they are feed from an EM source? Aren't batteries required where the lights are feed from a normal source so they stay lit?
I don't understand why batterieds are needed if they are feed from an EM source? Aren't batteries required where the lights are feed from a normal source so they stay lit?