
BS7671 18th Edition Part 7

Assessment
•
Connor Jenkins
•
Science
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KG
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2 plays
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Hard
Student preview

12 questions
Show answers
1.
Multiple Choice
The strongly preferred method of protection for the supply to portable hand tools on a construction site is...
reduced low voltage
electrical separation of circuits
automatic disconnection of supply
an RCD rated residual operating current of 30 mA or greater
Answer explanation
704.410.3.10, NOTE 1, P256
2.
Multiple Choice
For a swimming pool where is it not possible to locate a socket-outlet outside zone 1, the minimum height above the floor that a socket-outlet may be installed is...
1.0m
0.1m
1.25m
0.3m
Answer explanation
702.53, P247, P248
3.
Multiple Choice
For installations in motor caravans, the nominal DC supply voltage shall not exceed...
12 V
48 V
30 V
24 V
Answer explanation
721.313.1.2, Page 306
4.
Multiple Choice
Regarding the classification of medical locations, which of these is an example assigned to Group 1...
Intensive care room
Premature baby room
Delivery room
Operating theatre
Answer explanation
Annex A710 Table A710, Page 284
5.
Multiple Choice
For an electrical installation in a motor caravan, the cross-sectional area of all conductors shall not be less than...
1.5 mm²
4 mm²
1 mm²
2.5 mm²
Answer explanation
721.524.1, Page 309
6.
Multiple Choice
Regarding onshore installations used solely for the supply of inland navigation vessels, which of these wiring systems is NOT suitable for distribution circuit in berths and ports?
Overhead cables
They're all suitable
Underground cables
Armoured cables with elastomeric covering
Answer explanation
730.521.101.1 (i), (ii), and (v), Page 326
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