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WorksheetsRME-PEC #3
Total questions: 50
Worksheet time: 45mins
Where flexible tubing is used to encase the conductors, the tubing shall extend from the last insulating support to NOT less than (a) .
Metal raceways, enclosures, frames, and other non-current carrying metal parts of electric equipment shall be kept at least (a) distance from lightning rod conductors
Where no standard electrical equipment of the exact size or rating is available and the next larger size is neither available the next smaller size or rating may be used provided a special permission is obtained from (a) .
Instruments ,pilot lights, potential transformers and other switchboard devices with potential coils shall be supplied by a circuit that is protected by a standard over - current device rated up to (a) .
(a) is a wire or other mechanical member having one end secures and the other end fastened to a pole maintained under tension.
Below are the factors that affect the ampacity of an electrical conductor EXCEPT one. Which one is this?
Insulation resistance
Length of the conductor
Conductor material
The cross-sectional area of the conductor
For circuits over 600 V nominal, conductors shall NOT be bent to a radius less than (a) times the diameter for shielded or lead-covered conductors.
Which of the following statement about over-current devices is NOT correct?
It shall be located where they will not be exposed to physical damage.
It shall be readily accessible.
It can be located inside clothes closets.
In a multi-family dwelling, each occupant shall have ready access to an over-current device protecting his occupancy.
Which of the following statements is NOT true?
Conductors in raceways shall be continuous between outlets.
Metal raceways, boxes, cabinets, and fittings shall be grounded.
Metal or non-metallic raceways shall be continuous between cabinets, boxes or other enclosures.
The raceway shall be used as a means of support for other raceways.
For receptacle outlets, each single or each multiple receptacles on one strap shall be considered NOT less than (a) .
Corner joints on a gutter shall be made tight, where the assembly is held together by rivets or bolts. The spacing shall NOT be more than (a) .
(a) degrees is the total number of mechanical degrees that a PVC conduit run maybe bent between pull joints (pull boxes, junction boxes, or utility boxes).
The minimum size of wire used in electrical wiring is the former # 14 AWG. Under the SI standard in the PEC, what is the diameter of this wire?
1.2 mm
2.0 mm
1.5 mm
1.6 mm
(a) is a box with a blank cover which is ins erted in one or more runs of raceway to facilitate pulling of the conductors.
The neutral conductor from the neutral point of the transformer or generator to its connection point to the grounding impedance shall be (a) .
The sum of the cross-sectional area of all conductors in a wireway must NOT exceed (a) of the cross-sectional area of the wireway.
Circuit containing electric discharge lighting transformer exclusively shall NOT be rated in excess of (a) .
For ranges of 8.75 k W or more in rating, the minimum branch circuit required shall be (a) .
Lighting fixtures shall be wired with a fixture flexible cord with a cross-sectional area of NOT less than (a) .
If the setting of the over-current device in a circuit ahead of equipment is 60 A, the minimum required grounding conductor using copper is (a) .
Mineral insulated metal sheathed cable shall be permitted in any of the following installations EXCEPT one. Which one is this?
For control circuits
Where exposed to oil and gasoline
For feeder circuits
Where exposed to a corrosive atmosphere
Conductors which run above the top level of a window shall be permitted to be less than 1,000 mm but in no case shall be less than (a) .
For barber shops and beauty parlors, the general lighting load per square meter of the area shall be (a) .
Liquidtight flexible non-metallic conduit shall be permitted to be used:
for direct burial, where flexibility is required, in exposed or concealed locations
for direct burial, where flexibility is required, in unexposed or unconcealed locations
for direct burial, where flexibility is not required, in unexposed or unconcealed locations
for direct burial, where flexibility is not required, in exposed or concealed locations
Outlet boxes (a) are used as a sole support for ceiling fans
Flexible metal conduits must NOT be used in :
I. wet locations
II. hoistways
III. storage battery rooms
I only
II only
III only
I, II, III
For 25 to 50 A circuits, the minimum insulation resistance is (a) .
(a) ° C is the maximum operating temperature of type THWN conductor.
(a) is a conductor encircling a building and interconnecting all ground terminals.
The conductor connecting the neutral point of the transformer or generator to the grounding impedance (a) .
The total load on an over- current device located in a panel board shall NOT exceed to (a) of its rating.
For underground feeder and branch circuits, (a) of conductors shall be used.
An insulating element, generally of elongated form with transverse holes or slots for the purpose of insulating two sections of a guy or providing insulation between structure and anchor.
(a)
(a) is the ampacity of a 5.5 mm 2 TW copper conductor
A two-wire DC system supplying premises wiring shall be grounded EXCEPT:
A system equipped with the ground detector and supplying only industrial equipment in limited areas.
A system operating at 50 V or less between conductors.
A rectifier device DC system supplied from an AC system.
All of these
Hazardous location in which ignitable concentrations of flammable gases or vapors can exist under normal operating conditions.
(a)
Switches are operated vertically rather than horizontally. The upward position of the handle shall mean a (a) .
The use of surface non- metal raceway is NOT permitted in all those mentioned below EXCEPT one. Which one is this?
Dry locations
Where subject to severe physical damage
Where the voltage is over 300 V
Where concealed
The branch circuit rating shall NOT be less than (a) of the non- continuous load
For installation consisting of not more than two 2 - wire branch circuits, the service disconnecting mains shall be rated NOT less than (a) .
What is the lowest dielectric strength of transformer oil, which is acceptable to the PEC?
(a)
Wireways shall be supported at intervals NOT to exceed (a) .
For a dwelling unit having a floor area NOT more than 50 square meters shall be permitted to have a single 20- A, 2- wire branch circuit provided the total load shall NOT exceed (a) .
For show window lighting, a load of NOT less than (a) shall be included for each liners meter of show window
The maximum setting of the ground fault protection of equipment shall be (a) .
A grounded metal enclosure containing factory-mounted, bare, or insulated conductors, which are usually copper, or aluminum bars, rods, or tubes.
(a)
Flat Conductor Cable (FCC) system shall NOT be used in the locations enumerated below EXCEPT one. Which one is this?
Locations where subject to corrosive vapors
Damp locations
Residential buildings
Outdoors
Type MI cables shall be securely supported at intervals NOT exceeding (a) .
The grounding impedance for the neutral system shall be installed between the (a) .
In any watercraft, receptacle outlets operating at (a) or more shall have a grounding pole
