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Zs readings over limits
Former Community Member
Doing an EICR in a block of flats and quite a few of the lighting circuits have excessive Zs readings. All the circuits are on 60898 C10's without RCD protection with readings in the late 2 early 3 ohm range (max permitted 2.19). I know test result fails are generally a code 2 but these are LED panel downlighters with mostly class 2 drivers connected via choc boxes above the suspended ceiling so nothing really accessible. They would all comply with a C6 btw. Just wondered if you'd C2 this resulting in an unsatisfactory EICR
Mike, Zs at DB is 0.12 so pretty low. They are long corridors with approx 24 lights/sensors (hence joints) along the run, also an additional rise/drop of up to 2 floors through the riser so figures look feasible. Tested live with high current loop test, got slightly higher (worse) using r1r2 dead test. This is obviously communal areas btw not an individual flat
Mike, Zs at DB is 0.12 so pretty low. They are long corridors with approx 24 lights/sensors (hence joints) along the run, also an additional rise/drop of up to 2 floors through the riser so figures look feasible. Tested live with high current loop test, got slightly higher (worse) using r1r2 dead test. This is obviously communal areas btw not an individual flat
