What is NOT a requirement for basic protection as per 411.2?

Compliance with one of the provisions for basic protection described in Section 416

What does an RCM produce when a preselected value of residual current is reached, as noted in the NOTE under 411.1?

Both an audible and visual signal

A physical disconnection of the circuit

Which of the following is NOT listed as an example of extraneous-conductive-parts in Regulation 411.3.1.2?

Plastic water installation pipes

Metallic water installation pipes

Metallic gas installation pipes

Overhead metallic structural parts of the building

According to the note in Regulation 411.3.1.2, when are non-metallic pipes within a building that are connected to metallic pipes unlikely to require protective bonding?

When they do not normally require protective bonding as they are unlikely to be extraneous-conductive-parts

When they enter a building and are not connected to metallic pipes

When they are used for gas installation only

When they are connected to the main earthing terminal

What must be obtained if an installation serves more than one building and the above requirement shall be applied to each building, as per the text?

Consent of the owner or operator of the cable

A detailed report of the installation

Approval from the local government

A new cable installation permit

What is the maximum disconnection time stated in Table 41.1 for final circuits with a rated current not exceeding 32 A supplying only fixed connected current-using equipment?

It is not specified in the provided text

There is no maximum disconnection time specified

The same as for circuits with a rated current of 63 A with one or more socket-outlets

It is provided in Regulation 411.3.2.2

What additional protection is required for socket-outlets with a rated current not exceeding 32 A in locations where they are liable to be used by persons of any age, by BA1, BA3 or children (BA2, BA3)?

RCD with a rated residual operating current not exceeding 30 mA

RCD with a rated residual operating current not exceeding 32 A

RCD with a rated residual operating current not exceeding 5 s

No additional protection is required

Which of the following is an exception to the requirement of additional protection by means of an RCD for socket-outlets used outdoors?

Socket-outlets where a suitably documented risk assessment undertaken with the involvement of a skilled person (electrically) determines that RCD protection is not necessary

Socket-outlets with a rated current not exceeding 32 A in other locations

Mobile equipment with a rated current not exceeding 32 A for use outdoors

All socket-outlets require RCD protection without exception

What is the primary factor on which the integrity of the earthing of the installation in a TN system depends?

The reliability and effective connection of the PEN or PE conductors to Earth

The type of electrical devices used

The distance between the electrical installation and the power supply

The brand of the electrical installation components

In a TN system, if the neutral point or midpoint of the power supply system is not available or accessible, what should be done?

A line conductor should be earthed

A protective device should be installed

The system should be converted to a different type of earthing system

The installation should operate without earthing

Under what condition can a single conductor serve both as a protective conductor and as a neutral conductor in a fixed installation?

If the requirements of Regulation 543.4 are satisfied

If the installation is in an outbuilding of a dwelling

If the installation uses RCDs exclusively for fault protection

If the installation is temporary

What is Zs in the context of the characteristics of the protective devices and circuit impedances?

The impedance in ohms (Ω) of the fault loop comprising

The nominal AC rms or ripple-free DC line voltage to Earth

The protective conductor between the point of the fault and the source

Which of the following types of protective device may be used for fault protection according to Regulation 411.4.5?

An overcurrent protective device

According to the note in Table 41.3, when should the circuit loop impedances not exceed the values given in the table?

When the line conductors are at the appropriate assumed initial temperature.

When the line conductors are at the appropriate maximum permitted operating temperature.

When the line conductors are at the initial assumed temperature.

When the line conductors are at a different temperature than tested.

According to Note 2, when should the circuit loop impedances given in the table not be exceeded?

When the circuit protective conductors are not at the appropriate assumed initial temperature.

When the circuit conductors are at the appropriate maximum permitted operating temperature.

When the circuit conductors are at a temperature below the maximum permitted operating temperature.

When the circuit protective conductors are at the appropriate assumed initial temperature.

What types of protective device shall be used according to 411.5.2, with one being preferred over the other?

An RCD and an overcurrent protective device

An overcurrent protective device and a voltage regulator

In an IT system, live parts shall be insulated from Earth or connected to Earth through what means to handle a high impedance fault?

A) A sufficiently high resistance

B) A direct connection to the neutral point or midpoint of the system

C) An artificial neutral impedance

Which of the following monitoring devices and protective devices may be used in IT systems according to 411.6.3?

A) Insulation monitoring devices (IMDs)

B) Residual current monitoring devices (RCMs)

C) Insulation fault location systems (IFLS)

If an IT system is designed not to disconnect in the event of a first fault, what should indicate the occurrence of the first fault?

C) A visual and/or audible alarm system

A) An insulation monitoring device (IMD)

B) A residual current monitor (RCM)

What additional system may be provided to indicate the location of a first fault from a live part to exposed-conductive-parts or Earth according to 411.6.4?

A) An insulation fault location system according to BS EN 61557-9

B) A residual current device (RCD)

C) A touch voltage limitation device

Electrical Safety Quiz CH41

Authored by Chris Barlow

Education

12th Grade

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

Content View

Student View

90 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the fundamental rule of protection against electric shock according to BS EN 61140?

Hazardous-live parts shall be accessible and hazardous-live under normal conditions.

Hazardous-live parts shall not be accessible and accessible conductive parts shall be hazardous-live under normal conditions.

Hazardous-live parts shall not be accessible and accessible conductive parts shall not be hazardous-live, both under normal conditions and under single fault conditions.

Hazardous-live parts shall be accessible but not hazardous-live under single fault conditions.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to 4.10.1 of BS EN 61140, what does protection under normal conditions involve?

Fault protective provisions only.

Basic protective provisions and fault protective provisions.

Enhanced protective provision only.

No specific provisions are required under normal conditions.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does Chapter 41 specify regarding protection against electric shock?

It specifies the types of electrical installations only.

It specifies the requirements for the application and coordination of additional protection in certain cases.

It specifies the requirements for the application and coordination of basic protection and fault protection of persons and livestock.

It specifies the requirements for the application of enhanced protective provisions under single fault conditions.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a permitted condition for protective measures under the external influence according to 410.3.3?

Automatic disconnection of supply.

Double or reinforced insulation.

Electrical separation for the supply to one item of current-using equipment.

Use of non-insulated equipment.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the commonly used protective measure in electrical installations?

Reinforced insulation.

Extra-low voltage (SELV and PELV).

Automatic disconnection of supply.

Manual disconnection of supply.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Section 410.3.5, who is allowed to use the protective measures specified in Section 417?

Any person

Skilled persons only

Skilled persons or persons under the supervision of skilled persons

Unskilled persons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can be omitted for fault protection according to 410.3.9?

Metal supports of overhead line insulators attached to the building and out of arm's reach

All exposed-conductive-parts

Basic insulation of live parts

Supplementary bonding connections

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

85 questions

Wood Occupations

Quiz

•

12th Grade

85 questions

UTBK TAHAP 1

Quiz

•

12th Grade

90 questions

UUD Negara Republik Indonesia 1945

Quiz

•

12th Grade

86 questions

Quiz di Psicologia e Pedagogia

Quiz

•

12th Grade

88 questions

Drivers Ed

Quiz

•

9th - 12th Grade

90 questions

Engineering

Quiz

•

9th - 12th Grade

Popular Resources on Wayground

15 questions

Fractions on a Number Line

Quiz

•

3rd Grade

10 questions

Probability Practice

Quiz

•

4th Grade

15 questions

Probability on Number LIne

Quiz

•

4th Grade

20 questions

Equivalent Fractions

Quiz

•

3rd Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

$fractions$

22 questions

fractions

Quiz

•

3rd Grade

6 questions

Appropriate Chromebook Usage

Lesson

•

7th Grade

10 questions

Greek Bases tele and phon

Quiz

•

6th - 8th Grade

Discover more resources for Education

15 questions

Making Inferences

Quiz

•

7th - 12th Grade

23 questions

TSI Math Vocabulary

Quiz

•

10th - 12th Grade

20 questions

-AR -ER -IR present tense

Quiz

•

10th - 12th Grade

20 questions

SSS/SAS

Quiz

•

9th - 12th Grade

20 questions

Predicting Products

Quiz

•

9th - 12th Grade

20 questions

Presidents Day challenge

Quiz

•

9th - 12th Grade

20 questions

Food Chains and Food Webs

Quiz

•

7th - 12th Grade

20 questions

Banking

Quiz

•

9th - 12th Grade