Unit 309 (08): Understanding the electrical principles associated with the design, building, installation and maintenance of electrical equipment and systems
Sample questions 1
There are 15 multiple choice questions. Answer them all, selecting the correct answer out of the four provided.
1. E =...
From the RECC website (see below):
Told them about it and response was, "It's just up there as an example of a Feed in Tariff calculation and nowhere on the page does it claim to be the current tariff rate" Wonder what response I'd get if I used that line to my next auditor...
Generation...
Can somebody help me with the below please?
A raidial socket outlet circuit is suplied by 2.5mm cable and is 20M long. Given the Ze of the instalation is 0.43Ω and that the resistivty of the cable is 7.41Ω/m at 20c, what is the calculated ZS?
Working on a big house belonging to a boss of a billion £ building company
There is a dual rcd in the house feeding a dual rcd in the poolroom ,my boss said to provide two double sockets for the builders/site and gives us 2 rcd sockets, now we have 3 rcds in series. The site foreman goes to the...
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I have always been a bit confused about boxes 10,12 and 13 in the example of a completed 'Form 4 - schedule of test results'.
I understand why the value we get for R1+R2 (when measured at a socket) is a quarter of the end to end resistances, but why on the form is this not more clear?
Box 10...
Someone on here said once that there is no way that the DNO allow 100A supply per house, which obviously makes sense. So why do a lot of house have 100A main heads. Surely that means that the cables can take 100A or more otherwise cable would get hot before fuse went? Surely house have the...
I don't often moan about work and customers ect as on the whole I do ok and I'm happy with my business, but today this just takes the pish
Priced a job in an old BT telephone exchange which had been converted to a flat, existing wiring was in galv trunking which went across the windows ...
Its way to easy for anyone of you lot to get the correct answer so I wont bother on this one, just want to now how you would fix it?
A house has been unoccupied for about 6 months and all the power has been turned off so no central heating. On returning to the house the owner turns on one mcb...
Did an eicr today on a loft conversion wired by an unregistered spark, Eicr was requested by LABC once they realised they were not going to get the paperwork they wanted of this guy.
What we have here is the head guy at my LABC knowing who this guy is and saying "don't matter, your eicr tells us...
I was wondering if anyone can help me? I am looking for an example or template for a Written Quotation.
This would ideally be for a domestic job, say a 3 bed rewire and would ideally include a Written Contract and Terms and Conditions for the same.
I am not interested in the money side of...
Hi. Did some testing for a CCU change and socket readings off the scale! I might get the repair/rewire but then again I might not! So is there a 'standard' letter to issue/send client so I have covered myself? Anyone know of one or got one please? Thanks.
Hi all
just browsing the regs for the current carrying capacity of 1.5mm XLPE and i came across a table for non-armoured thermosetting cable. what would be an example of this, is it some sort of SWA but without the armour?
Hi All
Im looking for a little bit of general guidance with regards to prices i should be paying for works.
Without giving to much detail, I run a bathroom and kitchen company and have used my current electrician for about 4 years on and off. This year hes had a lot of work off me (in excess...
Should have taken a pic, but didn't. At a local football ground today:
Catering (burger) van, complete with tea urn, microwave, chip fryer, griddle, and above sink hot water tap. No gas in sight, 32A connector on the outside.
Cable ran from the roof of the van to a pole at about 2.3m height...
Hello, does any kind user of this forum have an example document or a commercial contract for me to look at?
I use the Real contract at present for domestic work but I have a commercial deal on the table and I don't want to get caught out on the detail. I would be grateful if any one could...
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