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EE109 - Electrical System Design > LE1 > Flashcards

LE1 Flashcards

1
Q

What is the purpose (4) of the PEC?

A

Practical safeguarding, Adequacy, Intention, and Relation to other international standards

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2
Q

What are the scopes (11) of PEC?

A 
Public and private building, 
Electric generating plants, 
Industrial plants, 
Transformer stations, 
Permanent/Temporary substation, 
Airfields, 
Railways Switchyard, 
Yards/Carnivals/Park/Car Park, 
Quarries/Mines, 
Watercraft, 
Dockyards
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3
Q

Mandatory rules are …

A

actions that are specifically required or prohibited

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4
Q

Mandatory rules are usually characterized by the terms …

A

shall or shall not / shan’t

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5
Q

Permissive rules are …

A

actions that are allowed but not required

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6
Q

Permissive rules are usually characterized by the terms …

A

shall be permitted or shall not be required

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7
Q

These are references to related sections of the Code, or information related to a Code rule, is included in the Code in the form of fine print notes (FPN)

A

Explanatory Materials

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8
Q

The current in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

A

Ampacity

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9
Q

A device that, by insertion in receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle.

A

Plug cap

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10
Q

Circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).

A

Branch circuit

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11
Q

A device designed to open and close a circuit by nonautomatic means and to open circuit automatically on a predetermined overcurrent without damage to itself when properly applied with its rating.

A

Circuit breaker

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12
Q

Give 5 types of CB

A

Adjustable, Instantaneous, Inverse time, Non-adjustable, Setting

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13
Q

An outlet intended for the direct connection of lampholder, luminaire, or a pendant cord terminating in lampholder.

A

Lighting Outlet

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14
Q

An excess of the rated current of equipment or the ampacity of a conductor.

A

Overcurrent

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15
Q

A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices

A

Panel board

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16
Q

A circuit conductor that is intentionally grounded

A

Grounded conductor

17
Q

Grounded conductors are usually distinguishable by …

A

Continuous white or gray outer finish,

Three continuous white stripes along its length on any color conductors EXCEPT GREEN

18
Q

Meter shall be included for a show window, measured horizontally along its base.
True or False?

A

True

19
Q

These boxes are used for easier pulling of wires

A

Pull boxes

20
Q

These boxes are usually rectangle or octagonal. It may also be a part of the conduit.

A

Junction boxes

21
Q

the conduits for installation inside ceilings, wood partitions, underground, shall be PCV.
True or False

A

True

22
Q

Conduits for service entrance shall be rigid steel conduit.

True or False

A

True

23
Q

Light switches and convenience outlet shall be rated …

A

10A, 250V AC

24
Q

A 40W fluorescent lamp can illuminate an area of

A

10m2

25
Q

The maximum distance from CO to CO is ….

A

12ft

26
Q

Protection against physical damage of cables and raceways using a steel plate or bushing must be at least ______ thick

A

1.6mm

27
Q

Protection against physical damage of cables and raceways must not be less than _______ from the nearest edge

A

30mm

28
Q

Give examples of protection against physical damage of cables and raceways

A

Bored holes, Notches in wood

29
Q

Direct buried conductors or cables shall be permitted to be spliced or tapped without the use of splice box.
True or False

A

True

30
Q

Backfill that may damage raceways or cables shall not be placed in an excavation of the raceway or cables. To prevent damage to the raceway or cable, protection shall be provided by approved means
True or False

A

True

31
Q

Raceway shall be sealed or plugged at either or both ends to avoid moisture at live parts
True or False

A

True

32
Q

For indoor wet locations, the entire wiring system, shall be mounted so that there is at least ______ airspace between it and the wall or supporting surface

A

6mm

33
Q

Give 3 support method

A

Clamping, Boxes with covers, method of equal effectiveness

34
Q

No wiring system of any type shall be installed in ducts used to transport dust, loose stock, or flammable vapors.
True or False

A

True

35
Q

What are the methods of marking?

A

Surface marking, marker tape, tag marking

36
Q

What are the plan requirements?

A

Location and Site plans, Legends, General notes, Electrical layout, Schedule of load, Design analysis, One line diagram, Title block

EE109 - Electrical System Design (1 decks)

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