- Reaction score
- 73
Was testing a 3 phase DB for storage heating. While testing I noticed I was getting continuity between 2 of the circuits, which were on separate phases. Each storage heater has its own 20A radial, and when doing an insulation resistance test between 2 of the circuits I get a reading of 0.00 ohms. I only get this reading between the 2 live cables, all other conductors are clear. Very strange reading to get, what are the chances of the 2 cables coming into contact and only the lives touching each other, or is there something I am missing?