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What about the rest of the regulations?

this job needs to completed as per the 17th edition wiring regulations and the building regulations

If there are lots of vertical runs of cable, there will be lots of voltage drop as it falls out of the end

you can get a shock from a neutral if it aint connected into the neutral terminal and the phase conductor is live

It probably isnt the RCD that is faulty, it is more likely to be the existing wiring. What you need to do is complete the testing procedures i.e Insulation resistance, earth continuity, earth fault loop impedance, polarity and then conduct the RCD tripping times tests. This would then ensure...

why do people play around with dangerous things? Why Oh Why?

I would love to know how you will conduct an insulation resistance test on a live circuit!

changeover switch?

bending the conductors is causing stress in the cable. Not bending the conductors is causing stress to the boss. Catch 22

maybe!

power factor correction would certainly help saving on the bill

conduit does help with this problem (heat dissipation). Note that by introducing conduit you maybe providing a bridge that is breaking the damp proofing

balancing the phases is preferable. Power factor correction is a way of saving on the bill. Is the meter measuring kWh or kVA?

if it is twin and earth and the insulation completely surronds the cable, the 17th edition derates the cable by 50%

And we must remember that either the definition of a radial circuit in the 17th has either changed or the definition is not correct(mis print)!

So when the 17th comes into full effect does every bathroom light now need to be on an RCD? even if it was installed to the 16th edition and no alterations or additions have been made?

So how do you test something like 7/036 PVC cable to the current regs? If every installation has to comply with the latest regs does that mean virtually every school, hospital, police station, house, swimming pool in the country now needs to be rewired to comply?

I did the course and exam last tuesday. It is a bit tricky as all of the content is new, but the questions are all answered in the BS7671. I found that if I thought I knew the answers off the top of my head then It was time to look in the book as they would not have asked the question if it...

the edition is sometimes need when testing something like PILC cable or imperial sized MICC or VIR as these are not covered in the 16th. There were some changes to the current carrying capacities of these around the 60's (13th or 14th I think). Also if something was installed to the 14th (or any...

This is true but most insurance companies will insist on an inspection and test (and usually stipulate NICEIC)