Pec 5 Flashcards
is the contact device installed at the outlet for the connection of a single attachment plug.
Receptacle
For ranges of 8.75 kW or more in rating, the minimum branch circuit rating shall be ___(A).
40 A
With respect to the safety value of the insulation on electrical maintenance tools, it can be said properly that : _____________________________
the insulation should NOT be used as the only protective measure.
Service heads and goosenecks in service entrance cable shall be _____ the point of attachment of the service drops to the building.
above
is a disruptive discharge around or over the surface of a solid or liquid insulator.
Flashover
The minimum size of service lateral conductors using copper wires shall be _______(mm2).
5.5 mm2
______shall NOT be installed in circuits exceeding ______V between conductors.
Plug fuses
250 V
A continuous electrical load is one where the maximum current is expected to continue for a minimum duration of time. What is this minimum duration of time? (April 2016)
Ans. 3 hours
Direct buried conductors and cables emerging from the ground shall be protected by enclosures or raceways extending from the minimum cover distance required to a point ______(mm) above finished grade.
2,400 mm
For installations to supply only limited loads of a single branch circuit, service entrance conductors shall NOT be smaller than ____(mm2) hard drawn copper.
3.5 mm2
is the upper most portion of a lightning protection system.Air terminal
Air terminal
Where no standard electrical equipment of the exact size or rating required is available, ___________maybe used.
the next larger standard size
______(mm2) is the minimum size of service drop copper conductors allowed by the PEC.
8.0 mm2
Entrances to rooms and other guarded locations containing exposed energized parts shall be marked with a _______.
warning sign
Appliance outlets installed in a dwelling unit for specific appliances, such as laundry equipment, shall be installed within ______(mm) of the intended location of the appliance.
1,800 mm
is the maximum permitted load of a 20-A branch circuit. (A)
16 A
Permitted load = 80% of the branch circuit rating = (0.80)(20) = 16 A
For warehouses or storage, a general lighting load of _____(VA/m2) shall be used.
2 VA/m2
Outlets for heavy-duty lamp holders shall be rated:__ (VA)
600 VA.
When fastening an outlet to a brick wall, the electrician should use ___________.
expansion bolts
is a portion of a lightning protection system extending into the earth.
Ground terminal
Open conductors passing over public streets, alleys, roads, parking areas subject to truck traffic shall maintain a vertical height _______(mm) from finished grade.
5,500 mm
Using copper, the minimum size of service entrance conductors shall be ______(mm2).
8.0 mm2
When testing the insulation integrity of a new or old electrical wiring installation circuit _______(mm2) conductors, the Code specifies a minimum insulation resistance of ___________(ohms).
5.5 mm2
250,000 ohms
_____________ is usually made on cables after installation.
Insulation resistance test