- Thread starter i=p/u
- Start date
id say you winding me up was about to say mulyiply by 1.06 but that would ccc
you as the inspectoarte, im shooting off hip here now... i know it says it somewhere...
D
Deleted member 26818
Actually it's either, alltough I believe the exam wants the answer as the designer.
Oi I'm still young (ish)
Zs reference was valid, but shouldn't be a concern for you with a 2382-10 exam. It's more of a 2391 question. I can explain further if you like, if you have the OSG it will be simple to explain.
D
Deleted member 26818
Yes BS7671 states that the designer should recommend the interval for when the first PIR should take place.
Then GN3 states, that the inspector carrying out the initial verification should recommend when the first PIR will be required.
Nice to see such co-ordination between the publications.
Last edited by a moderator:
I think it would be wiser to advise the right information in this thread though, don't you?
D
Deleted member 26818
I believe I have provided the right information?
M
MarkieSparkie
1) BS7617 is a non-statutory document, but if it is adhered to, compliance with which statutory document is likely to be achieved?
2) When may non-rechargeable auxiliary batteries be used in caravans?
3) With a DC voltage of 125V between conductors how would the installation be classified?
4) What is the most likely cause of an overload current arising in an electric motor circuit?
5) Under what conditions is the design current of a circuit defined?
6) Name a type of lighting equipment likely to require additional protection against thermal effects?
7) A component of a support system consisting of regularly spaced elements which mechanically retain a cable is defined as?
8) Name 3 SELV sources that will provide combined basic and fault protection?
9) A protective device giving protection to both overload and short circuit must be capable of breaking current up to what level?
10) A 230V single-phase heating circuit has a design current of 25A. The length of the PVC insulated cable is 20m. The 4mm[SUP]2[/SUP] cable installed has a volt-drop of 11mV/A/m. The voltage drop under full load conditions is? And does this comply with BS7671?
2) When may non-rechargeable auxiliary batteries be used in caravans?
3) With a DC voltage of 125V between conductors how would the installation be classified?
4) What is the most likely cause of an overload current arising in an electric motor circuit?
5) Under what conditions is the design current of a circuit defined?
6) Name a type of lighting equipment likely to require additional protection against thermal effects?
7) A component of a support system consisting of regularly spaced elements which mechanically retain a cable is defined as?
8) Name 3 SELV sources that will provide combined basic and fault protection?
9) A protective device giving protection to both overload and short circuit must be capable of breaking current up to what level?
10) A 230V single-phase heating circuit has a design current of 25A. The length of the PVC insulated cable is 20m. The 4mm[SUP]2[/SUP] cable installed has a volt-drop of 11mV/A/m. The voltage drop under full load conditions is? And does this comply with BS7671?
Last edited by a moderator:
450mm to top of socket, but can keep same as was... so only new builds at 450mm????
Was that top or bottom of socket?
Would this be in 17th edition questions paper?
S
SirKit Breaker
ask me questions, see if i can find in appropiate time, no trick ones pleaseonly if you have nothing better to do..
Hey up mate.
Been reading through his thread, and found it quite interesting.
Are you just taking the exam? or are you doing the course as well?
There is no need to remember all the 7 sections and 16 appendices, as there is a list of them all on page 3 of the BGB.
I will give you a fairly rough idea of which part of the regs the questions will come from. The questions will usually follow the regs, so Q1 will be in Part 1 Q60 will be in the appx's.
You will get 2,3 or 4 Q's each from parts 1,2 and 3. 14 will come part 4, 15 from Part 5, and about 15 or so from the rest of the regs including the appx's.
The questions in each section are proportional to the size of the section. 4 and 5 are both huge.
Parts 6, 7 and the appx's are very easy to navigate around to find the answers, but 4 and 5 can be a nightmare and these 2 sections are where all the traps lie.
I find that most incorrect answers in the mock tests i use come from parts 4 and 5. Also the most referred to reg in the book is 415.1.1.
The incorrect answers are usually as a result of not reading the questions properly, or getting sent elsewhere to a table, getting the correct table and not reading it properly, and so getting the answer wrong.
Cheers..........Howard
Think of this heights thing as a "band" on the wall, 450mm up from the floor extending to 1200mm up the wall. Sockets and switches lie within not outside this band. So top of switches at 1200mm, bottom of sockets at 450mm. Or so I've always thought for the last few years...........................trying to find you a definitive link I just read Part M online and it says 400mm to 1200mm?????????????? Page 49. Or are they saying then that 400 to the bottom would put the centre of the socket at nominally 450mm?
Here's a link to all the Building Reg downloads:
Planning Portal - Approved Documents - Downloads
http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADM_2004.pdf
Last edited:
aye was in the osg at 450 from bottom to top at 1200 , cheers malcolm. yes im doing the classes at 3 hours a week for ten weeks b ut only two weeks left then do a test, i know online and a choice of awnsers, i feel i will pass as you have 2 hours i think. i know what sections certain questions will be in, but ive only started looking at the regs recently so have to get to know what they saying anyway.... and your right sections 4 and 5 are longest, ps you forgot type your question
K
KFH
I found it helpful to put labled tabs at the start of each section so when looking something up in the appendix I was not spending too much time finding the right section. I bought reasonably robust ones from one of the large chains of office equipment suppliers, it might have been Staples. Don't put too many on though as it can take longer to work through them than to flick through the pages.
Q:- What IP rating should the top surface of a barrier or enclosure have?
Q: - What is the value of "Arms Reach"
Q:- What IP rating should the top surface of a barrier or enclosure have?
Q: - What is the value of "Arms Reach"
definataions is part 2 page 20, ring final circuits is appendix 15 page 362
D
Deleted member 26818
I would have thought, it was 600mm, the same as zone 2 in a bathroom?
It's in the OSG, Appendix 2. It states the corrected values are at an ambient temperature of 10 degrees C and Table 2E can be used to adjust for other ambient temperatures.
In this case, 20 degrees C would require multiplying the selected maximum measured value to be multiplied by a factor of 1.04
i thought multiply by 1.6 , as 20 degrees isnt in red book i guestimated 1.6 using the sequence..... so does this be done in the real world???? ive seen in some thread that you multiply by 1.2 is that figure normal used for safe side???
so much to consoder i bettter get 20 an hour when im finished this course lol
so much to consoder i bettter get 20 an hour when im finished this course lol
The factors will vary according to what the initial 'control' temperature is.
For example, here they start at 10 degrees, so 10 degrees = 1. Whilst in the resistivity of conductors (OSG page 167) they start from 20 degrees, so 20 degrees = 1.
again.. that is correct as the ambient temperatures in BS7671 appendix 4 are based on the ambient temperature of 30 degrees.
As you can see, one of the most important things to first work out is what the initial temperature is based on.
At a marina on a floating walkway or pontoon what height can you install a socket outlet? 
i know when designing Iz greater or eual than In greater than equal than Ib, this is all divided by your 4 factors, you then have your cable and protective device selected, then you do your volt drop too see if is ok,
but how do you know your zs will be within limits......??? do you take off your Ze and the remainder is divided by table 9A osg to give you your distance...... and i know table 7.1 osg gives you all this..
but how do you know your zs will be within limits......??? do you take off your Ze and the remainder is divided by table 9A osg to give you your distance...... and i know table 7.1 osg gives you all this..
OFFICIAL SPONSORS
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
Advert
Thread starter
- Joined
- Location
- Northern Ireland
- If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
- United Kingdom
- What type of forum member are you?
- Practising Electrician (Qualified - Domestic or Commercial etc)
Thread Information
Thread Tags
Advert
Advert
TrueNAS JBOD Storage Server
-
-
Understanding TrueNAS JBOD Servers: A Comprehensive Guide- Started by Dan
- Replies: 8
-
