City & Guilds 2395-01 - Electrical Installation

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City & Guilds 2395-01
Level 3 Award in the Periodic
Inspection, Testing and Certification
of Electrical Installations
What do you have to do?
• There are three assessments to be completed
in order to achieve this qualification.
• 301 – On-line multiple choice test
• 302 – Written Exam [Wednesday June 10th]
• 303 – Practical Assessment
301 Multiple Choice Exam
This exam has 40 multiple choice questions and you
have 80 minutes to answer them all.
This is the usual City & Guilds 2 minutes per answer.
Outcome
Number of questions
%
1 You have to understand what is
required for completing the safe
isolation of electrical installations and
circuits.
2 You have to understand the
requirement for electrical inspection
and testing of electrical installations
and recording the condition thereof
installations
7
18
2
5
3 Understands the requirements for
the safe testing of electrical
installations which havebeen placed
in service
4 Understand the requirements for
testingcircuits which have been
placed in serviceand may require
isolation
5 The requirement for testing
installations that have been
energised
9
22
7
18
13
22
2
5
40
100
6 Understand and interpret test
results
Total
302 Written Exam
This is a real, written examination. It is not the same as the ones
you have been doing for 2357. It will be taken under proper
exam conditions and invigilated by the exam staff.
Your lecturer will not be allowed into the exam room during this
assessment.
You are not permitted any reference material.
The entire planet sits this exam on the same day, so you have to
be available for Wednesday June 10th at 6pm
The written exam has a duration of 90 minutes
The test normally consist of up to 6 questions each counting
up to 15 marks.
These will be “Long answer“ questions
Usually you will be given a description of an installation with
the supply type, Ze, what type of cabling is installed, if there
have been any alterations and various other details about the
installation.
From that you will be asked questions about the installation
and how you would perform certain electrical tests on the
installation. You can also expect some questions about the
completion of the electrical installation condition report.
303 Practical Assessment
The practical part of the 2395 consists of a periodic inspection
and testing on an installation. You have a total of 90 minutes
to do the testing and then a further 30 minutes to complete
the relevant paper work.
According to City and guilds you are allowed to use your BS
7671 and GN3.
Despite what some people might say, you do not have to
complete your testing in the sequence as you would do with
initial verification.
There are also 2 faults to identify out of a possible 7 that
the assessor can put on the rig. This could be something like
a low insulation resistance, to an open ring circuit.
They are not difficult faults trying to trick you, but rather
faults you should pick up if you do the tests and interpret
the test results correctly.
You will do an insulation resistance test on a small single
phase CCU. Here you would have to identify 2 faults which
would either be a short circuit, low resistance or and earth
fault. This is very straight forward and should not pose a
problem if you know how to work with an insulation
resistance tester.
You can also expect to take 2 earth fault loop
impedance measurements on a simulator. You will be
informed of the type and rating of the protection device
after which you have to look in your BS 7671 to check if
the values are acceptable or not.
You need to keep in mind to apply the “rule of thumb”
where you multiply the number by 0.8.
The test rig is similar to that used for 2394 [2357], but as
mentioned earlier will have the faults on them. This will
include a 3 phase supply feeding a 3 phase DB. From that
DB there will be another feed to a single phase board.
There will also be some lighting circuits, an isolator with a
neon, a dimmer switch, a lighting circuit with 2 way
switching, a DOL starter with an isolator and socket outlet
ring circuit.
Normally you will start with the 3 phase board first then
complete all the relevant tests and then continue to test
the single phase board.
There is also a visual fault recognition assessment. This used
to be an installation with identifiable faults but is now a series
of photographs.
You will have 30 minutes where the assessor will show you 8
photos out of about a possible 20.
You will then need to state what faults there are on the
photos of any and state the code of the fault (C1, C2, C3)
C1 - Danger present. Risk of injury. Immediate
remedial action required
C2 - Potentially dangerous. Urgent remedial action
required.
C3 - Improvement recommended.
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