If a house consists of rooms, each with it's own sub meter then it makes absolutely no sense fitting a prepaid meter as the main meter.

Remember if the main prepaid meter runs out of units then all the submeters are dead irrespective of whether they have credits or not.

I always recommend to prospective clients who are wanting sub meters fitted, not to convert the main meter to prepaid . By doing that they will always have to feed the main meter which is an extra burden on them.

Many have come back and thanked me for that recommendation.

Peace out .. Derek Stuart.