Flashcards
(27 cards)
Electrical test probes must comply with certain standards:
HSE Guidance Note GS 38
The electricity at work regs require that
Only persons who have appropriate level of knowledge and experience can work with electricity
Legislation that prohibits live working is
Electricity at work regulations (1989)
The person carrying out initial verification confirms installation complies with
Electricity at work regulations 1989
The reason for initial verification is to ensure all electrical equipment is
Correctly selected and erected and of correct type with British harmonized standards
Before an initial inspection you need to find the
Supply type
Minimum IP rating for a)consumer unit and b)the top surface of consumer unit
Consumer unit - ip4x
Top surface of consumer unit - ip2x
Main purpose of initial verification is
To confirm installation is safe to be put into service
What situation requires issuing minor works cert
Additional socket outlets added to an existing ring circuit
Statutory doc with info relevant to initial verification
Electricity at work regs
Minimum voltage test leads comply with gs38 is
50 V AC
What action must be taken when a loose connection is found to a pipe
Defect must be made good and inspected before certification
IPXXB is
Protection against access to live parts
Minimum ip rating for zone 2 in bathroom is
IPX4
Which instrument would give out the most accurate results when carrying out an earth electrode test
A three or four terminal earth electrode tester
IPf can be obtained from the
DNO
Maximum tabulated Zs for a protective device is
1.44 ohms
Maximum permissible zs for a protective device js
1.15 ohms
Highest measure value for pfc is likely to be between
L1-L2
Voltage drop should be verified during a
Periodic inspection
Type of instrument to check phase sequence is
Rotating disc type
Selv circuit that passed insulation resistance would have a minimum of
0.5Mohms at 250 dc
Re fitting a consumer unit further away from the mains would
Cause the ZE value to increase
Type of instrument to measure leakage current is
A clamp meter