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surely you need years of experience before taking on pir work, do people realise how much work,knowledge and risk there is with PIR reporting? Very worrying i think !

still wondering why it was designed that way, very odd? :|

Thanks for all your replies, so a tns it is. :Salute

please help to identify main fuse and type and tail size if possible, believe this is a tns and 100amp. many thanks ze 0.39

Hi all, could someone explain how to use the correction values from the OSG. Are these values the max zs that can be for used for the devices to work. Does the bs7671/2008 give mathematical values and then osg gives 80% of those and if the ambient temp of the room is higher we have to use the...