Something to Consider

Andrew_Doran

Cycling Dumbasses wrote: »

There is no load mentioned in the drawing maybe it is a 10.8KW shower, all it says is ( instantaneous shower)

For all we know the the DB could be wired with wet string. The diagram wouldn't show that either!

Cycling Dumbasses

Andrew_Doran wrote: »

For all we know the the DB could be wired with wet string. The diagram wouldn't show that either!

Ah hear time to call it a night with that very educated post.

2011

Cycling Dumbasses wrote: »

To answer the question if one installed a 10.8KW shower and supplied it with a 6sq cable as in the drawing its load potentially could be 45 amps, a 32 amp rcbo wont trip out at 32, it will hold and i have seen it holding before up to 40 briefly, that cable will heat and break down over time more than likely at distribution board or at isolation switch which is a hazard.
Hazards can be dangerous. :mad:

You are correct, the RCBO would not trip immediately. This however is not a problem. If it was the cable would not be adequately protected as you agreed it is.

Are you now deciding that the cable is not adequately protected by suggesting that a 6 sq. T &E cable will "break down" if 40 amps were to flow though it? Is that what you think is "dangerous"?

Cycling Dumbasses

2011 wrote: »

You are correct, the RCBO would not trip immediately.

Are you suggesting that a 6 sq. T &E cable will "break down" if 40 amps were to flow though it? Is that what you think is "dangerous"?

On say a long run with one bad connection would do, i have seen it and in fairness the risk of fire is low but its still there, to answer your question yes in my opinion i would think it has potential for danger. im not trying to say i know everything and trying to out smart everyone i started this thread just to make people aware of advice they see or hear. Lock down this thread if you think necessary.

2011

Cycling Dumbasses wrote: »

On say a long run with one bad connection would do, i have seen it and in fairness the risk of fire is low but its still there, to answer your question yes in my opinion i would think it has potential for danger.

Bad connections with high currents can theoretically overheat and potentially cause a fire regardless of the cable or protective device. To be fair there is nothing on the drawing to suggest bad connections.

im not trying to say i know everything and trying to out smart everyone i started this thread just to make people aware of advice they see or hear.

...and in my 1st reply to you I said in point #1:

"1) People need to realise that a little knowledge can be a dangerous thing! Reading a few posts on the internet should not be deemed as sufficient training for anyone to start working on a 230V distribution board Our advice has always been, if in doubt employ the services of a registered electrical contractor. "

Lock down this thread if you think necessary.

Another satisfied customer

Stoner

Cycling dumbass,

Thank you for your contribution. If you see something wrong with a post please chip in and
comment about it on that thread. That way the users can see the comment and take it into consideration.