An Awful Feeling This

[gap30]

1 Mechanically sound joints

2 Securely fixed

3 Any holes made good

you are THE REGS ON LEGS if you can answer this off the top of your head cos i cant

list three operational characteristics of a low resistance ohmmeter as listed in guidance notes 3 (3 marks) from june 2010

 

[IQ Electrical]

you are THE REGS ON LEGS

Lol, I've dragged a lot of guys through this exam!

 

[Deleted member 26818]

It'll be number of points, type & composition of circuits, identification of protective devices and a description of the method used for fault protection.

I don't think the BS7671 forms require the number of points, that's an NICEIC thing.

 

[IQ Electrical]

you are THE REGS ON LEGS if you can answer this off the top of your head cos i cant

list three operational characteristics of a low resistance ohmmeter as listed in guidance notes 3 (3 marks) from june 2010

It's all on page 82 of GN3 but what a terrible question, rather pointless having to commit stuff like that to memory!

 

[brucelee]

yes there is actually a question on this in the 2391, i saw it somewhere a few days ago and it had me on the ropes, i want to go over the question again, it asked you to mention 5 items from the sheet, dont quote me on this it was something along the lines of number of points, isolation and switching...

Pg 19 Gn3
2.3.
daigrams charts and tables which for a simple installation is a eic or pir
10 the type and composition of circuits ,including points of utilisation,number and size of conductors and type of cable
11 the methood used for basic and fault protection and where appropriateand conditions for ADS
12 the info necessarry for identifiof each device performing the functions of protection ,isolation and switching and its location
13 any circuit or equipment vulnerable to a particular test eg Insulation resistance

remember this it comes up and is worth abnout 10 marks

 

[IQ Electrical]

Pg 19 Gn3
2.3.
daigrams charts and tables which for a simple installation is a eic or pir
10 the type and composition of circuits ,including points of utilisation,number and size of conductors and type of cable
11 the methood used for basic and fault protection and where appropriateand conditions for ADS
12 the info necessarry for identifiof each device performing the functions of protection ,isolation and switching and its location
13 any circuit or equipment vulnerable to a particular test eg Insulation resistance

remember this it comes up and is worth abnout 10 marks

Stick that in your pipe Spin!

 

[brucelee]

it is one of them C?????y labels you have to stick on comes with CCU wont be able to see the ccu for all the sad labels lol

 

[Deleted member 26818]

Stick that in your pipe Spin!

Sorry, I thought you were refering to the information required on a schedule of test results, not the information required to carry out an I&T.

 

[brucelee]

you are THE REGS ON LEGS if you can answer this off the top of your head cos i cant

list three operational characteristics of a low resistance ohmmeter as listed in guidance notes 3 (3 marks) from june 2010

Pg 82
4.3 low resistance ohmeter
may be ac or dc
with no load voltage of 4-24 v and short circuit current of not less than 200mA

and the measuring range should cover the span 0.2 ohms to 2.0ohms with a resolution of at least 0.01ohms for digi meters
and it was in JUne exam lol as I did it hehe

 

[La Poste]

State three examples where a 300ma RCD may be installed.

1. In an agricultural installation to provide fire protection.

2. In a TT installation where the earth fault loop impedance is less than 167 Ohms.

3. In a TN installation where earth fault disconnection times can not be achieved by an over current device.

Does that sound right?

 

[malcolmsanford]

I would have use at the origin of the installation for exhibitions shows and stands Reg 711.410.3.4 and also temporary installations for structures, amusement devices and booths at fairgrounds Reg 740.410.3 rather than your last 2.

 

[La Poste]

I'm not meaning to hijack this thread, maybe I should start a thread of my own but this question seems a bit misleading to me.

12. A test for electrical separation of a circuit is to be undertaken state:
a) between which conductors the test should be undertaken.
b) the test voltage which would be applied.
c) the minimum acceptable value.

Now I read this question as a test for electrical separation which means to me to make sure the circuit that is separated is electrically separate from the circuit supplying it IE the primary side of the isolating transformer.
The test would be between the conductors on the supply side IE SELV circuit and the primary side IE the circuit supplying the primary side of the separating transformer at 230V.
This test would be conducted at 500V with conductors of the SELV circuit connected together and the conductors of the primary side connected together, the test would be between these two sets of conductors, also test between the SELV circuit conductors and earth of the primary side at 500V.

The given answer is:
a) between live conductors on the SELV circuit.
b) 250V DC.
c) 0.5 MOhm

Does this question seem misleading to you or am I just being thick?
Thanks.

 

[atom]

[h=2]

[/h]

hi guys id just like to offer this useful link to anyone undertaking the dreaded 2391 - 10 inspestion & test exam, iv discovered a web page with some questions and loads of other useful info regarding the 2391 that some peeps may come across in there exam, the questions can be viewed at 2391samplequestions.blogspot.com hope you find this useful, i know i did ​

 

[gap30]

I'm not meaning to hijack this thread, maybe I should start a thread of my own but this question seems a bit misleading to me.

12. A test for electrical separation of a circuit is to be undertaken state:
a) between which conductors the test should be undertaken.
b) the test voltage which would be applied.
c) the minimum acceptable value.

Now I read this question as a test for electrical separation which means to me to make sure the circuit that is separated is electrically separate from the circuit supplying it IE the primary side of the isolating transformer.
The test would be between the conductors on the supply side IE SELV circuit and the primary side IE the circuit supplying the primary side of the separating transformer at 230V.
This test would be conducted at 500V with conductors of the SELV circuit connected together and the conductors of the primary side connected together, the test would be between these two sets of conductors, also test between the SELV circuit conductors and earth of the primary side at 500V.

The given answer is:
a) between live conductors on the SELV circuit.
b) 250V DC.
c) 0.5 MOhm

Does this question seem misleading to you or am I just being thick?
Thanks.

no mate i would prefer you to post questions such as this on this thread as we are all in this together, this is a question i have also struggled with

 

[gap30]

State three examples where a 300ma RCD may be installed.

1. In an agricultural installation to provide fire protection.

2. In a TT installation where the earth fault loop impedance is less than 167 Ohms.

3. In a TN installation where earth fault disconnection times can not be achieved by an over current device.

Does that sound right?

i personally would have answered paper mill, hay store, woodworking facility (anywhere where there is a risk of fire)

is this the right answer?