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    IP4X?

    Feed the cables into the rear of the consumer unit.
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    Spade through the Mains incident...help

    It is true "suppliers works" are specifically excluded from the IEE regs. I agree the ESQR are the correct reference. The relevant bit seems to be : http://www.opsi.gov.uk/si/si2002/20022665.htm#14 Which strengthens the original posters case.
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    Spade through the Mains incident...help

    You could argue that the cable is not installed to current good practice, regulations and legislation however they could argue that it was installed to current regs etc. at the time of install. I would tell them youre not going to pay and if they push the matter then make them a "without...
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    What size earth for boiler

    Regulation 413-02-02 states "main equipotential bonding ... shall connect to the main earthing terminal extraneous-conductive-parts ... including ... (iv) central heating and air conditioning system" So if a domestic central heating systems is an extraneeous-conductive-part then there is no...
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    Part P updates

    The specific requirement for testing seems to have fallen by the wayside. Is it the start of a U turn?
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    INSULATION RESISTANCE - WHO DOES?

    R1+R2 measurement is also to check polarity and to confirm that the shower is earthed - if you do it at the isolator you don't know that it OK. More often than not it's easier to take R1+R2 at the shower than at the isolator. Many showers even only have one screw. Problem I've often come...
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    Fitting a new plug

    What about girls?
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    INSULATION RESISTANCE - WHO DOES?

    You don't need to calculate R1+R2 for a PIR. If you look in the Onsite Guide it shows an example of a correctly filled in PIR in the R1+R2 column there are ticks to indicate that the Zs measurement has confirmed this. However I think the quickest method is to turn everything off do R1 and...
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    INSULATION RESISTANCE - WHO DOES?

    If your doing a PIR you can do an insulation resistance test with live and neutral shorted together and then test to earth. Do this on the whole installation i.e. all together not each seperately. Guidance Note 3 and the NICEIC testing book as well as the regs allow calculation of Zs from...
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    Do I need to Earth a metalclad back box?

    I scanned this in from Guidance Note 1 EARTHING OF FLUSH METAL ACCESSORY BOXES It has been questioned whether flush metal accessory boxes come within the definition of 'exposedconductive-parts', which require to be connected to the circuit protective conductor. An exposed-conductive-part...
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    3 phase question

    If you touch a neutral conductor and also are touching earth you are making a circuit. There is a difference in the resistances back to the transformer, or pme service head, therefore a potential difference i.e voltage. Unbalanced 3 phase loads induce a current in the neutral making the...
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    Cables in cavities

    I think they should have other priorities. Once the cables are in and test and there is no problems with damp then why not leave them until they present a problem.
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    3 phase question

    You can get a shock off the neutral if the 3 phases are not balanced. Also if there is a high resistance supplying the property.
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    Cables in cavities

    It's bad practice because you are breaching the cavity as well as adverse effects of insulation on the cables. Also how do you draw the cables in without damiging them. I'm doing inspections for a local authority and if I find cables in the cavity the house will be rewired. NICEIC TECHNICAL...
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    CONSUMER UNIT

    You may be better saving your money for a rewire.
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    height of cu

    131-12-01 Electrical equipment shall be arranged so as to afford as may be necessary: (i) sufficient space for the inititial installation and later replacement of individual items (ii) accessibility for operation, inspection, testing, maintenance and repair. 513-01-01 Except for a jont in...
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    Supp bonding

    This guide explains the difference: http://www.niceic.org.uk/downloads/Earthing%20Bonding%20guide.pdf
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    Supp bonding

    Try this guide. http://www.niceic.org.uk/downloads/Pocket%20Guide%208.pdf
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    Supp bonding

    You can't upgrade supplementary bonding in a special location e.g. bathroom without notifying BC. "DESCRIPTIONS OF WORK WHERE NO BUILDING NOTICE OR DEPOSIT OF FULL PLANS REQUIRED ... 2. Work which - (a) is not in a kitchen, or a special location, (b) does not involve work on a...
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    New CU in Loft

    Not many Electricians would be as thorough with their pre work inspection as this one. He could do it a number of different ways it's difficult to comment without seeing the installation.
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