1) System that Uses SWA armouring for earth  a) TNC-S b) TNS c) TT d) IT 2) maximum Zs of 0.8 ohms a) TNC-S b) TT c) TNS d) IT 3) most common earthing system in UK a) TNC b) IT c) TNS d) TNC-S 4) max Zs value of 0.35 ohms a) TT b) TNS c) TNC-S d) IT 5) Consumer responsible for supplying earth a) TT b) TNS c) TNC-S d) TNC 6) Commonly known as PME a) TNS b) TT c) IT d) TNC-S 7) Features a PEN conductor a) TNC-S b) TNS c) TNC d) IT

Earthing Systems

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