Electrical requirements.

[ukracer]

Yes I seem to be following that.

The 5 and 15 etc are indeed from an ancient installation and board.

I have now gathered all the fuses I need and I have taken the two boxes down to check and clean and add fuses.

Bit confused what the RCD is used for. AND why is has a neutral straight through.

 

[brightspark]

the rcd is used as the main isolator switch and also for earth leakage u do not fuse the neutral so it goes out to the neutral bar on the top. its double pole and works on current imbalance in other words if theres any imbalance on either the live or neutral to earth it will detect and trip

 

[ukracer]

First one is what lookse to be a pre 17th split load board (one main switch and one bank of circuits protected by that one RCD...if one circuit on that bank has a fault, then all the circuits protected by that RCD lose power.
Second is a garage board with an RCD main switch
The RCD switches both the neutral and the live.
Basically IIRC the RCD monitors the balance between live and neutral in terms of current flow and if the flow becomes unbalanced then the RCD trips out, say for example by current flowing through earth. (though I'm half frozen so my explanation might be off a bit)

Wylex board would be easier to get bits for, the design is still current, basically I'd ditch the RCD and go all RCBO, there is room to cover every circuit you want and still have a couple of spaces spare.

Some links to RCBOs on ebay

http://www.ebay.co.uk/itm/Wylex-RCB...hash=item3a9bf9e17c:m:mY3CSHdqGOWjMJU3tsEbZNg

http://www.ebay.co.uk/itm/Digitally...hash=item568f8a3439:m:me-As4UmxPu6yvOw326GMDQ

http://www.ebay.co.uk/itm/Wylex-RCB...hash=item3d2b2e3112:m:muXea_qJp8w-O33K5eIU7NA

http://www.ebay.co.uk/itm/Digitally...hash=item568f8a2643:m:m5y1PE8PXlTMv4vOFCBNIdg

Oh no my day goes from bad to worse I was hoping to be able to dispense with my daisy chained extension sockets tommorow. Lol

The small box was going to supply just lights from the original garage supply. That has a 6 amp B-type plus an RCD.

The second box I was going to supply a welding circuit with the 32c and a large machine circuit and and then ring main with the 32B 's.

If it needs anything else buying it aint going to be getting done till after Xmas as I just don't have spare cash.

It depends if it's safer than daisy chained extension leads for a couple of months. I don't care if it trips everything as the lights will be on a separate feed.

 

[dobbslc]

My whole garage is fed from the kitchen ring main and that has an RCD on it so if I have a fault I loose the whole garage plus the kitchen power.....
I do have an emergency light in the garage so I can see how to get out and go indoors to reset the power and receive a bollocking off the missus!
That top board will be fine for the power and the other for the lights.
How come you have two supplies to the workshop?

 

[ukracer]

My whole garage is fed from the kitchen ring main and that has an RCD on it so if I have a fault I loose the whole garage plus the kitchen power.....
I do have an emergency light in the garage so I can see how to get out and go indoors to reset the power and receive a bollocking off the missus!
That top board will be fine for the power and the other for the lights.
How come you have two supplies to the workshop?

The original supply was fitted when they built the garage back in the 70's .

I then fitted a cable approx 20mm in diameter when I brought my lathe back to use in my Garage from a 3 phase inverter.

So it's a case of anything is better than what's in their now.

 

[dobbslc]

So the newer cable will feed the power board?

 

[ukracer]

So the newer cable will feed the power board?

Yep. Old cables purely for lighting.

 

[dobbslc]

Sounds good to me, both on the same phase?

 

[ukracer]

Sounds good to me, both on the same phase?

Only got single phase.