I've been tasked to do some EICR's on some commercial Car Showrooms. There's lots of old DB's, little or no circuit details and the previous EICR's stated that nothing could be tested due to not wanting circuits switched off. Personally I don't think it's worth even reporting if you aren't testing anything?
I wondered if anyone had a strategy for dealing with these situations. I'm not looking for anymore work so I'd rather not fail anything unless I absolutely have to. The customer wants as little interruption to the supply as possible.
A possible strategy:
Visual check
Identify circuits where possible
Take Zs readings where possible
Check db's for signs of thermal damage
Zsdb and ipf's
Check bonding
Check tightness of terminals in db's and sampled accessories
Report on what I've seen and tested with limitations on everything else.
It is going to be impossible to identify cpc's and neutrals associated with each circuit. IR testing would have to be very limited.
Below is a picture of what I am up against. There's a mix of old and new db's with many BS3871 MCB's.
Any advice guy's?
