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Reg 612.14 - BS7671:2008 States: Where required to verify compliance with Section 525 the voltage drop may be evaluated by: i) measuring the circuit impedance ii) using calculations using cable length v load current for different cable sizes. Now.. Issue 1 - The regulation does not...

http://www.clevelandcable.com/page.asp?id=4086

The circuit isn't protected by a 20 A fuse otherwise, I would assume, the OP would just install what he needs without him being concerned.

:?: :?: :?: :?: :D :D :D :D Odd. You need to know what size the cable is (printed on cable sheath). You need to know what size circuit protection it already has. (printed on the device or the colour of the dot on the fuse carrier) This is only for starters.

http://www.vphase.co.uk/ If the voltage was limited would you use 220v (in the case of using a unit in the above link) or would you base it on 230v? In the domestic environment there is likely to be very little difference but on an industrial scale with private supplies this could be quite...

You see Sheds.. you see :D

hahaha :D :D :D :D

Well how can a valid assessment of the maximum demand ever be carried out? I sense Armageddon!! Rioting!! HOuse's without power!! The chaos!! :O :O :O

But that's my point. It is not true. Many design calcs are being done incorrectly. The current is 11.98 amps @230v.

Well without trying to sound like a numpty.... :D When dividing 3000 by 230v and getting a current of 13.04 amps, I would say that this 0.4 amps has been widely ignored since the "harmonisation" and accepted as the standard means when calculating the design current for 3kW loads, hence, keeping...

@240v the 3kW load (e.g. immersion heater) calc comes in at 12.5 amps. When calculating with 230v what is the current?

If it was he would be shot for taking pictures :D Very unusual practice :shock:

In terms of theory the NICEIC produce a work book with pretty pictures. They call it the learning guide. http://www.tlc-direct.co.uk/Main_Index/Books_Training_Index/Electricians_Guide_Book/index.html The NICEIC, in my opinion, produce well written, easy to understand publications. It's all...

All my resources are for 2008 and I am not going to spend weeks changing them for a 3 day course. Why would all their lights not work? :D Ohms law has been around for more than 100 years I think?

I assume so. It's for the UN :D The entire presentation is to be translated into Turkish. My delivery will also be translated (into Turkish) as it is given. It's going to be a very interesting time :D I've been given a room in a very nice hotel to unwind on an evening 8) The version makes...

Nahhh it's all Greek to me anyway :D

I'm off to to bring the Northern Part of a well known (divided) island in the Mediterranean next week to condense a normally 4 day course into three days. Every word is going to be translated as I speak too :D The Southern Part of the Island are currently working to the 16th, where as the the...

He didn't receive anything from him though. :( How strict are the councils with this certifying after work is completed malarky?

Sheds, Can Welsh not just ask the electrician to complete an Electrical Installation Cert from here http://electrical.theiet.org/wiring-regulations/forms/index.cfm (Top link on right hand side). Then take this to the council and cough up the £300 for the Building Regs completion cert?

Haven't you finished this job yet?!! :D