Can someone let me know the science behind this please. I’ve been told that if there is a fault on a circuit the ZS values in the regs are there to give ADS in a time that is not going to cause considerable harm. My question is if disconnecting times don’t comply what is the dangers that arise I know it’s physics but have seen marshalling bars carrying current through earthing conductors all day and we don’t get a shock of them. Thank you for you help in advance guys just want to clear up some unanswered questions.
What would cause the MET to be at a different potential to a victim? Why do we uses 50v maximum touch voltage however the touch voltage may become much higher, is this due to the 0.4 second disconnection times? And one last question TT touch voltage according to that equation should be fairly low due to the ZE being high this doesn’t seem correct. Thanks again guys
What would cause the MET to be at a different potential to a victim? Why do we uses 50v maximum touch voltage however the touch voltage may become much higher, is this due to the 0.4 second disconnection times? And one last question TT touch voltage according to that equation should be fairly low due to the ZE being high this doesn’t seem correct. Thanks again guys
