Testing 🇮🇪 Ireland
What order do you test a new installation?
Dead tests first: continuity of protective conductors (and ring circuits), insulation resistance, polarity, earth electrode resistance (if TT/electrode present). Then live tests: earth fault loop impedance, prospective fault current, RCD operation, functional checks.
Continuity → IR → polarity → electrode → Zs → PFC → RCD → functional
Regulation: I.S. 10101:2020+A1:2024 Part 6 (verification).
Study aid in plain English, not the text of the standard. Always check the current I.S. 10101 and your local rules. Electrical work must be done by a licensed or registered electrician.
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