On 31/05/2015 09:40, ARW wrote:
"dennis@home" wrote in message
web.com...
On 30/05/2015 22:11, John Rumm wrote:

So a user has to know what design decisions have been made so he can
avoid doing something that compromises them.

The user will have to trust that the designer and installer had a clue,
or else they might risk having shorter than expected service life from
their cable or sockets.

But the users doesn't know the rules and may well put several high
demand loads on for days at a time, say heaters and dehumidifiers
after a flood as you appear to think no one would ever have a reason
to do so.

Not 9kW.




I have seen about 15kW used like that. No idea what they were plugged
into. 5 or 6 fan heaters and the windows open to get rid of the moist
air. Something to do with the people moving in the following day and the
floor screed having been ripped up and relayed.

I have loads of building related horror stories being friends with the
head of building control. I have been around one site where about 20
houses had all developed cracks and were slowly moving down a slope
after less than six months. One where the lean to was assembled from
concrete blocks with nothing in between them, just waiting for a windy day.