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.
yes that is the right idea - but of course your victim may not be at the same voltage as the MET and or may not be touching the faulty equipment directly, there may be other bits of pipework or whatever connected part way along that R2, so there are a few extra options for a nasty surprise that are not mentioned here, and/or are not the full voltage.
yes that is the right idea - but of course your victim may not be at the same voltage as the MET and or may not be touching the faulty equipment directly, there may be other bits of pipework or whatever connected part way along that R2, so there are a few extra options for a nasty surprise that are not mentioned here, and/or are not the full voltage.
