Chapter 5 Flashcards
name a document that can assist in determining if an assembly is two hour rated
UL Fire resistance directory
a firestopping material that expands when heated is referred to as
intumescent
power limited equipment is determined to meet the limitations by______
the manufacture
a cable tray is considered a ______penetration
dynamic
Power limited wiring requirements are found in part ______ of article 760
3
the location of unit resistances for copper wire is found in _____ of the NEC
table 8
NEC ______ requires electrical penetrations to be firestopped
300.21
assuming that there are no approved separations between conductors, which of the following conductors are permitted in the same cable or raceway as power limited circuit conductors?
class 2
a firestopping classification having a minimum f rating of _____ must be used on a two hour rated firewall to resist the passage of flames
120
Which article of the NEC covers burglary system wiring
Article 725
non power limited circuits may be wired using what methods
ch3
non power limited methods
what cable is suitable for two hours of direct attack by fire
mineral insulated
circuit integrity
where non-power-limited wiring is installed exposed, it must be mechanically protected within _____ of the finished floor.
7 feet
Table provide limitations for power limited circuits
12A and 12 B
the inside of a conduit installed under a concrete slab at grade level is considered a ____ location
Wet
