Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Philippine Electrical Code > Chapter 4 > Flashcards

Chapter 4 Flashcards

1
Q

True or false.

Flexible cords and flexible cables shall be connected to devices and to fittings so that tension is not transmitted to joints or terminals.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the adjustment factor of a 10-20 conductors in a flexible cord and cable?

A

50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Flexible cords and cables are not permitted in connection of utilization equipment to facilitate frequent interchange.

A

False, it is permitted.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q 
All are uses of flexible cord and cables except for one: 
A. Connection of moving parts
B. Wiring of cranes and hoists.
C. Where installed in raceways 
D. Elevator cables
A

C. Except as otherwise permitted in this code.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to meet the requirements of a current-carrying conductor.

True or false.

A

True. Page 279

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Flexible cords and flexible cables and their associated _______ shall be suitable for the conditions of use and location.

A

Fittings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3 phase, wye connected system, a common conductor carries approximately the same current as the _________ currents of the other conductors and ________ considered to be a current-carrying conductor.

A

Line-to-neutral

Shall be

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

On a 4-wire, 3 phase, wye circuit where more than _____ percent of the load consists of nonlinear loads, there are _________ currents present in the neutral conductor and the neutral conductor shall be considered to be a current-carrying conductor.

A

50%

Harmonic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

True or false.

An equipment grounding conductor shall be considered a current carrying conductor.

A

False, shall not.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Flexible cords and flexible cables shall be marked by means of a _______ attached to the ________ or carton.

A

Printed tag

Coil reel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Required markings on tags, cords, and cables shall also include the maximum operating temperature of the flexible cord or flexible cable at an intervals not exceeding _______.

A

610mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the adjustment factor of a 4-6 conductors of a flexible cord or flexible cable?

A

80%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

True or false.

Flexible cord and flexible cable shall not be permitted if contained within an enclosure for use in other spaces used for environmental air

A

False, shall be

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The repair of hard-service cord and junior hard-service cord ________ and larger shall be permitted if conductors are spliced and the completed splice retains the insulation, outer sheath properties, and usage characteristics of the cord being spliced.

A

2mm^2 (1.6 mm dia)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

True or false. Listed portable single pole devices that are intended to accomodate such tension at their terminals shall not be permitted to be used with single-conductor flexible cable.

A

False, shall be

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

True or false.

Flexible cords not bigger than 0.75mm^2 (1mm dia), and tinsel cords or cords having equivalent characteristics of smaller size approved for use with specific appliances, shall be considered as protected against overcurrent.

A

False, not bigger but smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Flexible cords and flexible cables shall be protected by ______ or ______ where passing through holes in covers, outlet boxes or similar enclosures.

A

Bushings or fittings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

In industrial establishments where the conditions of maintenance and supervision ensure that only qualified persons service the installation, flexible cords and flexible cables shall be permitted to be installed in ______ raceways that are no longer than ______ to protect the flexible cord or flexible cable from physical damage.

A

Aboveground

15000mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

True or false.

Flexible cords shall be examined and tested at the factory and labeled after shipment.

A

False, before shipment dapat.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The individual conductors of a flexible cord or flexible cables shall have copper flexible _____ and shall not be smaller than required.

A

Stranding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Identification.

A braid finished to show a white or gray color and the braid on the other conductor or conductors finished to show a readily distinguishable solid color or colors.

A

Colored braid.

4.0.2.3 Identification of grounded-conductor.

22
Q

True or false.

No tracer shall be used in the braid of any conductor of a flexible cord that contains a conductor having a braid finished to show white or gray.

A

True

Tracer in Braid

23
Q

True or false.

Conductors having a continuous green color or a continuous green color with one or more yellow stripes shall not be used for other than equipment grounding conductors.

A

True

24
Q

True or false. Cords or cables consisting of integral insulation and a jacket without a nonintegral grounding conductor shall not be permitted to be green.

A

False, shall be permitted

25
Q

Identification.

For cords having no braids on the individual conductors, an insulation of a continuous green color or a continuous green color with one or more yellow stripes.

A

Colored insulation or covering.

4.0.2.4 Identification of equipment grounding conductor

26
Q

For portable cables over 600 volts nominal, the conductor shall be _______ copper or larger and shall employ flexible stranding.

A

3.5mm^2 (2mm dia)

27
Q

An equipment grounding conductors shall be provided in ______ with _____ or more conductors.

A

Cables

Three

28
Q

True or false.

All shields shall not be connected to an equipment grounding conductor.

A

False, shall be

29
Q

The minimum bending radii for portable cables during installation and handling in service shall be ________ to prevent damage to the cable.

A

Adequate

30
Q

Connectors used to connect lengths of cables in a run shall be of a type that locks _____ together. Provisions shall be made to prevent opening or closing these connectors while ______. Suitable means shall be used to _____ tension at connectors and terminations.

A

Firmly
Energized
Eliminate

31
Q

True or false.

Terminations on portable cables rated over 600 volts, nominal, shall not only be accessible to authorized and qualified personnel.

A

False, shall be accessible only

32
Q

What is the minimum size of fixture wires?

A

Not smaller than 0.75mm^2 (1mm dia)

33
Q

Thermoplastic insulation may stiffen at temperature lower than ______., thermoplastic insulation may also be deformed at normal temperatures where subjected go pressure, such as at points of support.

A

-10 degree celsius

34
Q

Thermoplastic insulated fixture wires shall be durably marked on the surface at intervals not exceeding _____.

A

610mm

35
Q

True or false.

Fixture wires shall not be used as branch circuit conductors.

A

True. Except as permitted elsewhere in this code.

36
Q

True of false.

Switch loops shall require a grounded conductor.

A

False, shall not

37
Q

What is the allowable ampacity for fixture wire sized 3.5 mm^2 (2mm dia) and 0.75mm^2?

A

23A and 6A

38
Q

True or false.

Switch loop shall not require a grounded conductor

A

True

39
Q

In table 4.2.1.5, what is the sizes of a conductor with an allowable ampacity of 8A and 17A?

A

1.25mm^2 (1.2mm) and 2.0 (1.6)

40
Q

True or false.

Switches or circuit breakers shall not disconnect the grounded conductor of a circuit.

A

Truuuuu

41
Q

A switch or circuit breaker shall be permitted to disconnect a grounded circuit conductor where all circuit conductors are disconnected _______, or where the device is arranged so that the grounded conductor cannot be disconnected until all the ungrounded conductors of the circuit have been disconnected.

A

Simultaneously

42
Q

True or false.

The number of electronic lighting control switches on a branch circuits shall not exceed 4, and the number connected to any feeder on the load side of a system or main bonding jumper shall not exceed 25.

A

False, not 4 but 5

43
Q

True or false.

Switches and circuit breaker shall be of the internally operable type mounted in an enclosure listed for the intended use.

A

False, externally

44
Q

True or false.

Pendant and surface-type switches and knife switches mounted in an open-face switchboard or panelboard shall be permitted without enclosure.

A

True

45
Q

_________ shall not be used as junction boxes, auxillary gutters, or raceways for conductors feeding through or tapping off to other switches or overcurrent devices.

A

Enclosure

46
Q

A surface-mounted switch or circuit breaker shall be enclosed in a ________ enclosure.

A

Weatherproof

47
Q

A __________ or circuit breaker shall be equipped with a weatherproof cover.

A

Flush-mounted switch

48
Q

True or false.

Switches shall be installed within tubs or shower spaces.

A

False, shall not be installed.

49
Q

Devices mounted so they are accessible only to qualified persons shall be permitted without barriers, provided they are located within an enclosure such that any energized parts within ______ of the manual adjustment or switch are covered by suitable barriers.

A

152mm

50
Q

Single throw knife switches shall bd placed so that _____ will not tend to close them.

A

Gravity

Philippine Electrical Code (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions