1) What does T stand for in relation to earthing systems a) Terrific b) Total c) Terra 2) What does N stand for in relation to earthing systems a) None b) Negligible c) No d) Neutral 3) What earthing system has the neutral and earth combined to the cut out and then becomes seperate? a) TN-C-S b) TN-S c) TT d) TU 4) What earthing system has the earth and neutral seperate all the way? a) TN-S b) TT c) IT d) TN-C-S 5) What earthing system is where the consumer must supply their own earth ? a) TI b) TN-S c) TN-C-S d) TT

Earthing arrangements lcb

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