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klik.system | Specification guide to prefabricated wiring systems
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BS 8488 specifies that a wiring system comprising a number
of circuits connected to separate overcurrent protection shall
emanate from an LV switchgear and controlgear assembly,
complying with the relevant part of BS EN 60439, BS EN
61439 or BS EN 61534.
An appropriate standard for the system distribution board can
be BS EN 60439-3, which is known as an MCB
distribution board.
BS 8488 requires that where the LV switchgear and
controlgear assembly contains the wiring system overcurrent
protection, the connector to the assembly shall conform to
BS EN 61984 and the installation coupler shall conform to
BS EN 61535.
In particular, the specifier for the prefabricated wiring system
must ensure that LV assembly e.g. distribution board, has
suitable ratings that include the incorporated connector and
/ or installation coupler. For example, conditional fault current
rating (short-circuit) and rated current (temperature rise) (see
figure 8).
System distribution board
Figure 8 - System distribution board to BS EN 60439-3 with
connectors to BS EN 61984.