Hello It is not really understood what that point of the regulation refers to, I have read and re-read it half a dozen times and it seems to indicate that an ignition of a motor or equipment with relay (relay or contactor) cannot be used to activate another load than the main one. It is only an elaborate interpretation, since that point of the regulation (5.1.1.5) makes no sense within a general description. In summary, this is understood by the one who wrote it, do not give it any importance, it is very badly raised because it is a general regulation of housing, whether in Chile or elsewhere, it is not really understood what it means . regards