An assembly for use in a wall mountable electrical load centre includes mounting means (10) for locating a plurality of longitudinally extending planar live outgoer bus bars (L1, L2 and L3) juxtaposed in a single plane. A longitudinally extending planar neutral outgoer bus bar (11) is located in superposed relationship spaced from the live outgoer bus bars (L1, L2 and L3). The arrangement is such that a circuit breaker or other outgoer (15) can be connected to any preselected one of the (L1, L2 and L3) or neutral (11) outgoer bus bars at any one of a plurality of outgoer positions spaced along the length of the bus bars.
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