The regs say where it enters the installation for water and gass and other services. The meters are not part of the installation as they are deemed to be owned by the supply authority. Therefore its it s 600mm or where practicle on the installation side of the meter.
If its a 3 phase TT system i would suspect your earth is a bit high This would explain the low L-E voltage being low and the heat generated in the ear ron.....oops Rod
2.
a) One part of the building has an area where chemical etching and washing down takes place.
i) List three factors which must be considered when inspecting the containment system in this particular area.
ii) Identify, for each of the factors given in (ai) above, the...
a) Determine the voltage drop for the circuit if the combined measured resistance of the line and neutral conductors is 0.38 (Ω) and the load current of the motor is 30 (A).
b) Determine whether the voltage drop calculated in (a) above meets the requirements of BS 7671.
Easy marks...
b) State two items that would be checked during the inspection of the new lighting installation containment system stating what is being checked for in each case.
choosing the correct switches and conductor size.
What has conductor size and switch got to do with th containment system...
ii) Two items within the DB which are to be inspected using the sense of sight stating what is being checked for in each case.
to checking that : there are no any crack or visible damaged to the DB or any part inside.
correct labelling and sequencing of all conductors.
You cannot prove...
It all depends on the earthing system
In a TN-C-S the PEFC and FSCC current will be the same
In a TN-S and TT system they will be different ats the Neutral and Main earth are taking different routes
Always just measure and I put down the lowest result taken as thats the worst case
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