Some regulations use the term 'ABSOLUTE'. What does this mean?
Requirement can be ignored
Requirement must be met regardless of cost or inconvenience
Requirement only applies to the Employer
Requirement only applies to Employee
BS7671 defines the colours of electrical conductors. What is the colour defined for a protective conductor?
Brown
Green
Yellow
Green and Yellow
BS7671 electrical regulations do not 'normally' apply to which ONE of the following types of electrical equipment?
railway track signals
rotating machines
fire alarm systems
emergency lighting
Which ONE of the following sites has to meet the specific requirements of special 'codes of practice'?
petrol stations
agriculture/horticultural installations
construction sites
caravans and caravan parks
What is the purpose of an 'Installation Specification' ?
To inform the contractor of the clients requirements
To inform the client how the installation works
To inform the electricians what equipment to use
To inform the sub-contractors of the electricians requirements
Which ONE of the following is not normally shown on a CPN?
rates of pay (including overtime)
Proposed Contract start and finish dates
Hours worked each day
required labour at different stages of the contract
What does an 'as-fitted' drawing form part of?
tender document
network diagram
risk assessment
work records
What is 'day work'?
Extra work over and above the original contract
planned daily casual labour
light lifting duties
work that can only be carried out during daylight hours
What is the typical type of cable system used in a domestic premises?
MI
SWA
PVC singles
PVC/PVC
What type of wiring system may be used in an industrial environment that experiences high ambient temperatures?
MIMS
PVC insulated and sheathed cable
Rubber insulated cables
PVC insulated singles in PVC conduit
What is the purpose of the PVC outer covering on a MI cable?
To prevent corrosion of the metal sheath
To make the system look good
To make the system water-proof
To protect it from direct sunlight
When selecting cable from the BS7671 regulation tables, by what criteria are cables selected?
current carrying capacity
length of cables
maximum temperature capacity
cable weight
What is the preferred way of reducing excessive voltage drop in a circuit ?
reduced voltage
increased cable CSA
increased cable length
Reduce the size of the load
An A1 RING circuit is protected by a 32A MCB at 230v. What is the MAXIMUM power available?
73.66w
736w
7.36kw
7360Kw
Thermostats are often fitted with a permanent magnet inside them. What is the purpose of this magnet?
To provide a positive snap action
To collect metallic debris
to minimise any magnetic fields
to prevent the contacts from sticking to each other
Where is the best place to site distribution boards within a large factory, which has many items of large electrical equipment?
As close to the front of the factory as possible
As close to the centre of all the loads as possible
As close to the other services (gas, water etc) as possible
As close to the emergency exit as possible
A thermostatically-controlled water heater is rated at 3kw at 230v. What would be the most suitable circuit to install this equipment on?
a dedicated 10A radial circuit
a dedicated 16A radial circuit
a fused spur from an A1 ring circuit
a non-fused spur on an A2 radial circuit
A bedroom is to be converted into a bathroom. There are 13A socket outlets in the bedroom which will be 3.6m from the edge of the proposed position for the new bath and shower tray. What must happen to these socket outlets?
they can remain in place
they must be removed
They must be 50v Ac or less (SELV)
They must be resited to be at least 4.6m from a bath or shower
Which ONE of the following systems of earthing uses the 'general mass of earth' as the earthing conductor?
TN-C-S
TN-S
TT
TN-C
Which conductor joins the circuit protective conductors to the Distribution company's supplied earth connection, at the mains intake position of a domestic house?
cpc
main equipotential bonding conductor
supplementary bonding conductor
main earthing conductor
Before starting any installation work, it is essential to first -
identify any potential hazards
identify the location of the site office
identify the name of the 'clerk of works'
identify the start and finish times
A lack of cooperation between trades on a busy building site can lead to?
infrequent site meetings
accidents
completion of the job within timescale
poor working relationships
What is the most appropriate tool for ensuring that a vertical run of conduit is correctly installed?
spirit level
chalk line
tape measure
set square
Where trunking passes between rooms on the same floor, internal and external fire barriers shall be installed -
every 3 metres
where the trunking goes through each wall
at the end of the run
at the beginning of the run
Which ONE of the following fixings is best suited to secure a 20mm pvc conduit saddle to a hollow plaster-board surface?
screw
nail
spring-toggle
rawlbolt
What are the items shown here called?
Cable Brackets
Cable Cleats
Cable Clamps
Cable Ties
What might an electrician use a 'tracer' for?
measuring voltage
identifying circuit cables
for designing layout drawings
measuring current
What may occur if excessive PVC cement is used when joining PVC conduit?
A barrier may form within the joint
The joint will be weak
The PVC may 'degrade'
The joint will take a long time to set
Who is responsible for the disposal of waste packaging and other waste materials?
The operative
The boss
The client
The main contractor
If conductors are not clean when crimped together, what will be the likely result?