How I Rewired the Shed

mdbalson · 13 Jun 2007

The Old wiring in the shed

The way the shed was wired up was a 16amp MCB to 2.5mm T+E to Metal app box to 2.5mm SWA going through the wall of the house, then along the ground, into the shed, along the shed floor at the back of the shed, along the shed floor at the side of the shed, and into a Wylex Standard 4 way metal ccu.

From the shed ccu:

Circuit 1 = one double socket in the shed (15amp Rewireable fuse)

Circuit 2 = four outside sockets on side of shed (15amp HRC fuse)

Circuit 3 = Lighting (2 Gang light switch, which runs: First Gang= Shed light. Second Gang= Floodlight on back of house to light up the garden) (5amp Rewireable fuse)

Circuit 4 = Spare

Here are some pictures of the old wiring in the shed

House end of old shed supply:

http://i167.photobucket.com/albums/u125/mdbalson/DSC00015.jpg

Old outside sockets on next door's side of shed:

http://i167.photobucket.com/albums/u125/mdbalson/DSC00030.jpg

Old shed light switch:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00031.jpg

Old light wiring:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00034.jpg

Close up of old light switch wiring:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00036.jpg

Old Shed light:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00035.jpg

Close up of old light wiring:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00078.jpg

Old Socket:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00037.jpg

Old Shed CCU:

http://i167.photobucket.com/albums/u125/mdbalson/DSC00038.jpg

Old CCU Fuse Cover:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00039.jpg

Old CCU with Fuse Cover removed:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00040.jpg

Old CCU with Fuses removed:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00041.jpg

Old CCU with main cover removed:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00042.jpg

Old CCU:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00044.jpg

New Method of Earthing SWA
http://i167.photobucket.com/albums/u125/mdbalson/DSC00045.jpg

Old CCU Wiring:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00046.jpg

And notice that:

1) No Grommets on CCU

2) SWA not earthed propatly at the shed ccu end

3) wires in ccu not in the terminals propatly

4) Wrong Fuse backing on the lighting slot (30A Back instead of 5A one)

scousespark · 13 Jun 2007

why have you posted this? isn't this in your earlier thread?

mdbalson · 13 Jun 2007

scousespark said:
why have you posted this? isn't this in your earlier thread?

I am making this post to put in all of the pictures of how I rewired the shed, as people are saying that the other post about the shed is too long at 7 pages.

mdbalson · 13 Jun 2007

The way I have rewired the shed is:

I put the shed on the Non-RCD CCU, for now & I am going to then move it over to the non-RCD side of the New 17 way Wylex split-load board am going to put in soon, to replace the old 6way MEM CCU & the old 4 way RCD Contactum CCU with.

The shed is on a 30 amp MCB, in the House ccu (the MEM one)

6mm T+E, which runs from the ccu up the wall to the outside JB, where it connects to 6mm 3 core SWA, which runs to the Shed CCU

New Shed CCU is a Metal Wylex 5 way Consumer Unit with a 100amp 30mA RCD mains switch.

Put in three Metalclad DP double sockets along the worktop, & a Metalclad switched FCU for the 2kW Heater, which will be on a Ring Main, on a 32amp MCB in the shed ccu (Plug the Tumble Dryer into one of these sockets),

Have the pond pump, an outside socket, the LV Garden lights (x2), the light in the summer house, and the pond lights as a Ring circuit on 32 amp MCB in the shed ccu.

Put the shed light, & the outside shed light (the light above the shed door) on a 6 amp MCB in the shed ccu.

Run the Cables in the Shed in Round 20mm PVC Conduit.

Clip up the 6mm SWA with cable cleats

Put in a 12 Gang Metalclad MK Grid System with :

The Shed Light (a 5ft Tube) on a 10Amp 2 Way SP Switch

The Outside Shed Light on a 10Amp 2Way SP Switch

The summer house light (a 3 or 4 ft Tube) & a socket on a 20Amp DP Switch & a fuse holder with a 13 amp fuse in. (I will put a fcu in the summer house to fuse down to 3amps for the light)

The 6 LV Post lights (Top of Garden) on a 20Amp DP Switch & a fuse holder with a 3 amp fuse in.

The Side Path LV lights on a 20Amp DP Switch & a fuse holder with a 3 amp fuse in.

The Pond Pump on a 20Amp DP Switch & a fuse holder with a 3 amp fuse in.

The Pond Lights on a 20Amp DP Switch & a fuse holder with a 3 amp fuse in.

(2 MCBs fed the grid switch)

The Outside Shed Light will be a photocell controlled light

Click link for picture of light http://www.tlc-direct.co.uk/Products/GLFIN255.html

To fed the two sets of LV Garden lights, and the pond pump and the summer house light & socket, I was going to use two lengths of 4 core 2.5mm SWA, to power them.

One length will be to power the pond pump, and the 6 LV Post Lights. (By using two of the 4 cores for each thing = Two sets of Live & Neutral cores, and use the Steel Armor as the Earth.)

The Other length would be to power the Side Path LV Lights, and the summer house light & socket. (By using two of the 4 cores for each thing = Two sets of Live & Neutral cores, and use the Steel Armor as the Earth.)

The Run of the shed SWA is about 13m from the outside JB on the house to the shed ccu.

mdbalson · 13 Jun 2007

mdbalson · 13 Jun 2007

ricicle · 13 Jun 2007

FFS...................................

enquirer · 13 Jun 2007

Please do not ever buy a block of flats.

Every saga has to have an end - doesn't it!!

Spark123 · 13 Jun 2007

http://i167.photobucket.com/albums/u125/mdbalson/DSC00071.jpg
Did you miss with some of the SWA strands? They should all be in the clamp, some of them look like they have gone up the inside of the gland. Is it the correct size gland for the cable?

http://i167.photobucket.com/albums/u125/mdbalson/DSC00155.jpg
Is it just me that hates the idea of a banjo resting between a locknut and a plastic enclosure? If I was forced to use a plastic enclosure I be looking towards using a piranah locknut.

mdbalson · 14 Jun 2007

Spark123 said:
http://i167.photobucket.com/albums/u125/mdbalson/DSC00071.jpg
Did you miss with some of the SWA strands? They should all be in the clamp, some of them look like they have gone up the inside of the gland. Is it the correct size gland for the cable

All of the SWA strands are gripped in the gland, & it is the correct size of gland for the cable ( 20 Gland which is for 3x6mm SWA)

mdbalson · 14 Jun 2007

The pictures of the Shed CCU wiring are now posted up.

ricicle · 14 Jun 2007

mdbalson said:
The pictures of the Shed CCU wiring are now posted up.

Whoopee !!!!!!!!!!!!!!!

Lectrician · 14 Jun 2007

I have to say, it does look neat.

I hate inspection tees/elbows though - you loose marks for those. Should have used circular boxes

I prefer to see pulled bends where possible.

The insulated enclosured on the house wall look poor IMO - Just not very neat and tidy.

The T+E also enters the rear of the enclosure, and is sealed with mastic - not ideal.

Cleats too large on the 'freezer swa'??

Conduit entry into the top of an IP rated enclosure? I hope you drilled a drain hole? I would always try to avoid entering the top with conduit/swa/trs etc.

Is the chase in a 'safe' zone?

Cable ties would be better inside the grid switch if you REALLY feel you need to group cables.

Tape on the earths and neutrals in CU is cack. It is not needed.

Is the banjo on the CU swa nut and bolted through the case? lookes like you have bolted the cable to the banjo, and then put it into the CU?? How can you tighten if it ever becomes slack? How can anyone check it is tight?

Pulled bend out of top of CU looks good - well formed. Bet that took practice and few lost lengths

Male conduit adaptor in bottom of grid sw back box - A female would have better suited.

Do you have a new digi-camera-toy or something

Be careful - Photobucket will start charging you soon

Thermo · 14 Jun 2007

my how the winter evenings must just fly by

mdbalson · 15 Jun 2007

Lectrician said:
I have to say, it does look neat.

I hate inspection tees/elbows though - you loose marks for those. Should have used circular boxes I prefer to see pulled bends where possible.

The insulated enclosured on the house wall look poor IMO - Just not very neat and tidy.

The T+E also enters the rear of the enclosure, and is sealed with mastic - not ideal.

There is also the rubber seal of the box, around the T+E.

Lectrician said:
Cleats too large on the 'freezer swa'??

Yes.

Lectrician said:
Is the chase in a 'safe' zone?

I think it is as you can see the cable coming out of the chase in the meter cupboard, & also the cables will be covered with steel capping, before the chase is plastered over.

Lectrician said:
Pulled bend out of top of CU looks good - well formed. Bet that took practice and few lost lengths

Male conduit adaptor in bottom of grid sw back box - A female would have better suited.

Yes I know it would be, but B&Q ownly do 25mm conduit adaptors in male.

Lectrician said:
Do you have a new digi-camera-toy or something

No just my new Sony Ericsson K750i Phone with camera

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

How I Rewired the Shed

Similar threads