Pec 8 Flashcards
Connection or fittings shall NOT connect grounding electrode conductors to equipment by means of ______
solder.
Each length of non-metallic conduit shall be clearly and durably marked at least every ________(mm) as required.
3,000 mm
Doors leading into a transformer vault shall be kept locked and access allowed only to ___________.
qualified person
Resistors and reactors shall NOT be installed in close proximity to combustible materials such that it constitutes a fire hazard. What is the minimum clearance that is required by the Code? (mm)
Ans. 300 mm
The grounded conductor shall be equal to the largest phase conductor.
6. Completely enclosed, ventilated transformers equipped with an 80C rise insulation may be installed in a room of ______________
fire resistant construction
in a switchboard there shall be an air space of at least _______(mm) between the energized metal part and the door of the cabinet.
25 mm
Electrical metallic tubing shall be securely fastened in place within _____(mm) of each outlet box, junction box, cabinet or fitting.
900 mm
Lead-in antenna conductors for television or radio equipment shall be securely ________(2) to antennas.
attached & fastened
Lighting fixtures approved for damp locations shall be installed only in ________.
damp locations
What is the metric size equivalent of 1,000 MCM? (mm2)
Ans. 500 mm2
Antenna conductors for television equipment shall be installed so they will not ____ under open electric light or power conductors where possible
cross
For churches, the general lighting load shall be computed at ____VA/m2.
8VA/m2
The following are common splicing rules EXCEPT one. Which one is this? (April 2016)
Wires of the same size should be spliced together in line
. Electric discharge lighting shall be connected by flexible cord if the cord is visible for ____% of its entire length.
100%
What is the latest edition of the PEC, Part 2?
Ans. 1988
is all circuit conductors between the service equipment or the generator switchboard of an isolate plant, and the final branch circuit over-current device.
Feeder
is a disruptive discharge through insulation.
Breakdown
Insulators used to support wires under cross arms are________
suspension
______________ is a pliable corrugated raceway of circular cross-section with integral or associated couplings, connectors and fittings for the installation of electric conductors.
Electrical non-metallic tubing
. The scope of the PEC covers all electrical conductors including optical fiber cable and equipment installed within or to or from any of the following premises, which one is NOT included?
Aircraft
Motor vehicles
Railway rolling stocks
All of these
All of these
The maximum size of liquid tight flexible metal conduit shall be ________(mm) trade size.
100 mm
Transformers that are installed in unsupervised locations and rated over 600 V are protected by fuses on the primary side and cannot exceed _____% of the primary full load current.
300%
Each length of intermediate metal conduit shall be clearly and durably identified at ______(mm) intervals with the letters “_____”.
760 mm
IMC
What is the maximum rating of a molded case circuit breaker to protect a 10 hp squirrel cage induction motor rated at 230 volts, 3-phase, 60 Hz with a full load rating of 28 A? (A)
Ans. 70 A
Size = 250% of FLA = 2.5(28) = 70 A