1) How is electricity distributed in domestic dwellings? a) With a single-phase consumer unit. b) With a 3-phase distribution board c) With a TNCS, TNS or TT incoming supply d) Installing supplementary bonding  2) How is electricity distributed in larger buildings? a) With a 4-wire three phase supply b) With a 3-phase distribution board c) Using multicore flexible cable d) 3-phase busbar systems 3) What is this? a) BS1361 - type 2 b) BSEN 61008 c) BSEN BS61009 d) BSEN 60898

(14b) Electrical supply

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