tank
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Hi all, i'm doing an eicr on a school and am live testing ZS for ring final circuits. The supply is TNCS. i have two results and three questions if i may. i'm getting
c32 rcbo ZS 0.64 ohms. ( Max ZS allowed 0.55 ohms ) Should this be coded a C3 because although ZS fail, the rcd will catch an earth fault? Or C2 because we are now relying on the rcd for fault protection as opposed to additional protection? i would remedy both codes with a b32 rcbo.
c32 rcbo ZS 1.01 ohms. The rcd works. As the ZS so high I tested L-N loop and got 0.65 ohms. Would I be correct in thinking this a C2 as the rcbo will now not disconnect a short circuit before cable damage?
Finally, tin hat on, if the first result can be coded C3, could i remedy the C2 by swapping for a b32 rcbo? This would downgrade C2 to a C3 which could then only be fixed with a circuit redesign. Any thoughts?
c32 rcbo ZS 0.64 ohms. ( Max ZS allowed 0.55 ohms ) Should this be coded a C3 because although ZS fail, the rcd will catch an earth fault? Or C2 because we are now relying on the rcd for fault protection as opposed to additional protection? i would remedy both codes with a b32 rcbo.
c32 rcbo ZS 1.01 ohms. The rcd works. As the ZS so high I tested L-N loop and got 0.65 ohms. Would I be correct in thinking this a C2 as the rcbo will now not disconnect a short circuit before cable damage?
Finally, tin hat on, if the first result can be coded C3, could i remedy the C2 by swapping for a b32 rcbo? This would downgrade C2 to a C3 which could then only be fixed with a circuit redesign. Any thoughts?