Hello just wondering if anyone could help me! I have to test a circuit tomorrow wired in SWA that is using its armoring as its earth, To carry out the R1+R2 test how would i eliminate any parallel paths? Surely the only real way to do this would be to remove the cable from the side of the metal DB and carry out an R2 test? HASTLE! Or do I disconnect the main incoming earth terminal and carry out an R1 + R2 test this way the board is not connected to earth in any way? One more thing!! When putting down the size of the protective conductor do I just put the size of the fly lead used or work out the swa armoring equilivant?