WorksheetsPart 2 Regs questions
Total questions: 1
Worksheet time: 7mins
What does Part 2 of BS 7671 primarily provide?
Guidelines for outdoor electrical systems
Safety regulations for electrical appliances
Detailed chapters on electrical installations
Technical definitions used throughout the document
What feature does Part 2 of BS 7671 include at the end?
Two tables explaining symbols and abbreviations used
Safety guidelines for electrical installations
A list of recommended electrical equipment
A comprehensive index
What does the 'T' in earthing system codes stand for?
Terre (earth in French)
Terminal
Transformer
Transfer
Which earthing system includes earth electrodes that are independent of the source's earth electrodes?
TN-C
IT
TN-S
TT
What is the nominal voltage range for Low Voltage (LV)?
Normally exceeding 1000 V a.c.
Up to 500 V a.c. in residential areas
Exceeding extra-low voltage but not exceeding 1000 V a.c. or 1500 V d.c.
Not exceeding 50 V a.c. or 120 V ripple-free d.c.
What does the classification code 'BA4' relate to in terms of external influences?
Mechanical impacts of medium severity
Protection against water ingress
Persons adequately advised or supervised by skilled persons
High ambient temperatures
What does an IP code indicate?
The insulation properties of electrical cables
The power rating of electrical appliances
The installation procedures for electrical systems
The degree of protection against access to hazardous parts and ingress of foreign bodies
Which IP code is required for equipment installed in Zone 0 of a swimming pool?
IP2X
IPX6
IP44
IPX8
What does the 'S' in a TN-S system stand for?
Secure
System
Separate
Shielded
What is the correct symbol for the sum of the resistances of the earth electrode and the protective conductor connecting it to the exposed conductive parts?
Zs
Ra
R1+R2
Uoc
