3-501-01
Secondary side of service entrance transformer
What is the location of the NEC demark?
15%
What amount of spare capacity is required in the electrical system?
LED lights
What are we to use for interior lighting?
• In a separate room of the same building that houses the generator
system.
• In a building separate from the building served by the generator system.
• On the outside of the building that houses the generator system.
• On the outside of an enclosure that contains the generator system.
Where does an emergency power off switch need to be?
Bond both ends of the conductors to ground
What do we do for the 4th wire (neutral) on primary systems?
It's a "why" document.
What is the basis of design?
1200amps and larger
At what rating is switchboard construction needed?
4100 CCT
What is the minimum color temperature for interior lighting?
7 days
What is the required fuel tank size?
24" burial depth
What is the minimum depth to underground condutis?
Connected load x a demand factor
How do you size a service entrance transformer?
hinged panel fronts
What's another name for door-in-door construction?What does the UFC require, but specs don't say?
80 CRI
What is the minimum color rendering index?
4 pole
What kind of transfer switch is usually required?
conduit stup out
What do you provide from the HV section of a service transformer?
3% for feeders, 3% for branch circuits
What are the allowed %'s for voltage drop?
1/2" conduit size
What is the minimum allowed conduit size?
all lights turn on
What should happen when the fire alarm goes off?
isolation bypass
What kind of ATS do you need for critical facilities?
1/3 spare
How many spare conduits do we need in ductbanks?
Calculated load values
What must our panel schedules show?
20amp circuit breaker
What's the minimum branch circuit overcurrent protection?
+/-10%
What is the allowed deviation of indicated lighting levels/criteria?
because it's a critical system
Why do we have to witness acceptance testing?
T and Y splice
What's not allowed in manholes for greater than 15kv sytems?