Specifies supplementary requirements to AS/NZS 3429.1 for enclosed distribution boards containing protective devices and intended for installation in places where unskilled persosns have access for their use. Reproduced from IEC 60439-3 consolidated edition 1.2, which incporporates its Amendment 1:1993 and Amendment 2:2001 into IEC 60439-3:1990. Contains variations for Australian and New Zealand conditions.