Shed Electrics

stefan4782 · Feb 12, 2012

I have got a outhouse (SHED) its got 5 double sockets 3 12v spot lighs and a outside light plus a 2kw heater (Will replace with 500w heater) there was 2.5mm supplying the shed now I have taken it out I was going to use Newlec NL6943XLH Cable, Black, 25m, Copper 4mm², Three Core with a Crabtree RCBO Type C, 40A, Single Module.

Would this be okay to use or would the 2.5mm be okay?

GLENNSPARK · Feb 12, 2012

is the cable you plan to use to be burried?...is it armoured?....whats the earthing arrangements here?....whats the bonding like?.....any additional protection (RCD/S)?

Marvo · Feb 12, 2012

The answer to your question depends largely on what you're going to plug into your 5 sockets.

ipf · Feb 12, 2012

Did you buy the shed from a shed ?

stefan4782 · Feb 12, 2012

The shed has 5 double socktes theres a 32" LCD TV and PC, games console 2kw heater (may get a 500watt heater) and 2.1 surround sound set plugged in there may also be a small pond pump. There are 3 12v spot lights also and a normal energy save outside light the cable is 4mm SWA cable it may not be burried there is a consumer unit in the shed with a 32a mcb and a 6a mcb

Paul.M · Feb 12, 2012

Are you getting an electrician in to install or have you got the quals and test equipment to do this job yourself?

stefan4782 · Feb 12, 2012

I done level 1 2 and 3 at college + my granddad is a qualified electrician but he lives to far away so ill do it then he can come check it

Paul.M · Feb 13, 2012

Ok stefan just do basic cable calcs. What's going to be the flc of the shed? What's the distance of the cable run for volt drop? What earthing arrangement is it? Etc etc.

stefan4782 · Feb 13, 2012

iv been abit lazy and done a volt drop calculation on tlc website it has come up with 1.5mm cable thats aint right

Paul.M · Feb 13, 2012

Where's your books? Or is that the lazy bit.

stefan4782 · Feb 13, 2012

well I dont work in electrical at the min because i cant get a electrical job where i live as when employers ask if i had experience and i say no the dont reply back and no book this is why im trying to find info on the net. im using a TT system and its about a 22m run up to the shed ? any help i would be greatful for

Engineer54 · Feb 13, 2012

I'm going to have to ask!! ...Why are you having this shed on a TT system??

Oh, and how about giving some answers to questions that has been asked on your cable, like is it being direct buried etc???

Deleted member 9648 · Feb 13, 2012

Engineer54 said:
I'm going to have to ask!! ...Why are you having this shed on a TT system??

Oh, and how about giving some answers to questions that has been asked on your cable, like is it being direct buried etc???

Do you think it might just be remotely possible that someones told him you cant export the earth?.........

richy3333 · Feb 13, 2012

wirepuller said:
Do you think it might just be remotely possible that someones told him you cant export the earth?.........

It's the economy I blame. Can't export anything at the moment because of the downturn in the financial situation

stefan4782 · Feb 13, 2012

Sorry I will use a TN-S earthing system the cable will be part cleated to the wall coming out of the house then buried half way going to the shed if that make sense.

This is the link to the cable im going to use:

Buy Newlec NL6943XLH Cable, Black, 25m, Copper 4mm², Three Core - NL6943XLH4.0/25

oh and i have been out of college 2 years only done few electrical jobs so need bit of a refresh on things. so sorry about the dumb replys.

Engineer54 · Feb 13, 2012

That's standard SWA cable nothing special... lol!! Glad to hear your not TT'ing this shed now, especially as you have a TN-S earthing system. Just bury the cable deep enough not to be subject to future damage, or better still duct it...