They have fitted two A3 standard circuitsv(Table 8A OSG) - I always prefer to install radials (A2) Just wired a church building using nothing but A2 and A3 circuits
Some changes to the wiring regulations- The PIR is on its way out -
for the full document go to
http://www.theiet.org/publishing/wiring-regulations/DPC/index.cfm
According to the Draft for public comment for the Amendment 1 of BS7671:22008 the PIr is on its way out and is being replaced by The Electrical Installation Condition Report - which contains a number of major changes to the classifications codes - But one of the better changes is the inclusion...
A metal gas or water pipe must not be used as an earth electrode. regulation 542.2.4 but an old water pipe could be used if precautions are taken against its removal reg 542.2.4
You can do an IR if the Dol has no electronics also you would have to disconnect the motor when doing IR otherwise you will pick up the motor windings- it is easy just to link the DOL out and do R1+R2 at the motor terminals back to Board. if you try and do it by mechanical operation of the...