Safe Isolation

Question 1

What is Safe Isolation?

Answer 1

” switching off electrical supplies and completing dead testing to allow for safe working?

Question 2

why do we need electrical isolations?

Answer 2

Safety
Legal requirement

Question 3

What equipment do you need to carry a safe isolation?

Answer 3

-GS38 compliant voltage indicator
- GS38 compliant Proving unit
- Locks
- Warning Notices
-PPE

Question 4

What are the 9 steps to complete a safe isolation?

Answer 4

1- Obtain permission
2- identifying source of supply
3- test voltage indicator on proving unit
4- isolate supply
5- lock off
6- prove dead with voltage indicator
7- test voltage indicator against proving unit
8- place warnings
9- confirm the system s dead and work can begin

Question 5

How do you carry out a single phase dead test?

Answer 5

L-N
L-E
N-E

Question 6

How do you carry out three phase dead testing?

Answer 6

L1-L3 L1-L2 L1-N L1-E
L2-L3 L2-N L2-E
L3-N L3-E
N-E

Question 7

What must be done to comply with regulation 14 of the EAWR?

Answer 7

Working dead should be the normal method. Working live should only occur when necessary.

Question 8

What is GS38?

Answer 8

GS38 is a safety standard related to electrical test probes and test leads used in electrical testing and measurement. It is a British Standard that specifies requirements for the construction, performance, and testing of test probes and leads intended for connection to electrical test equipment

Question 9

What are the requirements of GS38 in regards to Voltage indicator devices?

Answer 9

1- Fuse Rated
2- Insulated materials used
3- finger guarded
4- no more than 4mm of tip exposed
5- leads have to be coloured to be distinguished apart
6- long enough for purpose but not too long where they are unwieldly.
7- no exposed conductors