- Reaction score
- 6,866
ye I've had it marked and it was wrong also could you elaborate on what high integrity earthing is and the difference between the 2( I'm not familiar with functional earthing in the 1st place apart from google and reg definition)
I'm definitely not the best person to ask about functional earthing, but thankfully @plugsandsparks is on top of that.
High integrity earthing is another matter entirely and involves splitting CPC across two terminals, so two seperate routes to earth exist. This is generally found on circuits supplying a lot of IT equipment where earth leakage currents could be reasonably high - on a radial circuit a second CPC would return from end of line. Another benefit of high integrity earthing (perhaps the one from which its name is derived) is that a path to earth exists if one CPC should come loose at an outlet.
@PC1996 generally provides good explanations on this subject, but a forum search didn't provide me with such a post to link in place of my less than concise explanation above.
I should add that getting stuff wrong is part of the learning process. No one gets 100% in every exam and assessment. It grinds my gears that we never know exactly where marks are dropped in exams, but at least assessments provide an opportunity to learn from mistakes and gain further knowledge.