Testing Ze when you cannot disconnect the bonding?

[cliffed]

Test Ze @ the DB,switch off,disconnect the Main earth conducto,there you go,re connect jobs a good in?

 

[Vortigern]

Remove the small circular plastic inserts you see and undo the screws with the T-Bar @7029 dave has illustrated. While you are at it, remove the bonding cables and insert them into an MET bar screwed somewhere convenient. Really speaking those bonds should never have been put in the DNO equipment but on a separate MET where the main earth is terminated.