M
maluka
Hi All.
I'm finally getting to start the installation that i'd asked advice on in October. However there have been some changes i've had to make i may or may not be on the right track.
The plan was to put in an 8 way cu (sub main) with 6 RCBOs' to divide up a computer suite, 25 PCs', data projector, printer, e.t.c, all radials (high integ earthing).
The 8 way being fed by the original radial circuit from a Federal DB in a riser about 50m away (cable run). The plan being to replace the 30A Federal RCBO with a 40A Federal MCB, those of you with much more experience than myself have just seen the flaw in my plan, Federal boards are now obsolete and i'm a little uncomfortable with using secondhand MCBs' (ebay).
So i decided to let sleeping dogs lie and not touch the Fedral except for the folowing.
So plan B from the riser a 2 way cu sub main with a 40A MCB (63A pole switch) to the computer suite in 10mm T&E to the 8 way cu.
My question concerns the tails from the 2 way cu:-
Where do i connect them, on the incoming or bus bar side of the Federal board (each phase protected by a 100A fuse)?
Or directly to the incoming supply bus bar box?
Can i use the 10mm T&E?
Or does it need to be larger that 10mm?
The total length not being longer than 2 meters.
Your thoughts would be appreciated.
I'm finally getting to start the installation that i'd asked advice on in October. However there have been some changes i've had to make i may or may not be on the right track.
The plan was to put in an 8 way cu (sub main) with 6 RCBOs' to divide up a computer suite, 25 PCs', data projector, printer, e.t.c, all radials (high integ earthing).
The 8 way being fed by the original radial circuit from a Federal DB in a riser about 50m away (cable run). The plan being to replace the 30A Federal RCBO with a 40A Federal MCB, those of you with much more experience than myself have just seen the flaw in my plan, Federal boards are now obsolete and i'm a little uncomfortable with using secondhand MCBs' (ebay).
So i decided to let sleeping dogs lie and not touch the Fedral except for the folowing.
So plan B from the riser a 2 way cu sub main with a 40A MCB (63A pole switch) to the computer suite in 10mm T&E to the 8 way cu.
My question concerns the tails from the 2 way cu:-
Where do i connect them, on the incoming or bus bar side of the Federal board (each phase protected by a 100A fuse)?
Or directly to the incoming supply bus bar box?
Can i use the 10mm T&E?
Or does it need to be larger that 10mm?
The total length not being longer than 2 meters.
Your thoughts would be appreciated.