Shed Installation.

[Helmetvonspit]

Hi, everyone, my name is Darren and i would be greatful for some advice on installing electrics to my shed.

First of all i have a RCBO B20 30ma breaker from my main consumer unit in my house for my outside supply and i understand that there are new rules and regs now to how to wire this up to my shed.

What i would like to run in my shed is a tumble dryer, lighting sockets for inside the shed and also one for outside, i would be very greatful if someone could give me the step by step instructions on doing this if it is possible.

Many thanks

 

[Zeespark]

In all honesty bud, call an electrician in, there are a lot of variables and not enough technical detail in your question to suggest anything else.

AndyGuinness

 

[Badfish]

^^+1 defo call an electrician.

 

[SLIPSHOD & SLAPDASH]

How long will the cable be from the consumer unit to the shed and how do you intend to run it, buried, clipped to a wall etc ? Are you in Scotland ?

 

[Badger]

urm im not being funny but how do you intend to calculate the legth of run with the amperage required to find out the size of cable needed. without basic information like this the job is diffcult to say how to do it. another thing to think is is the origin of the electrics in the house tt? pme? tncs? or tns as this also makes a difference.

 

[PC Electrics]

seriously.....step 1: call an electrician.

Electricity can kill!! and sometimes it does

 

[Doc Hudson]

Hi, everyone, my name is Darren and i would be grateful for some advice on installing electrics to my shed.First of all i have a RCBO B20 30ma breaker from my main consumer unit in my house for my outside supply and i understand that there are new rules and regs now to how to wire this up to my shed.

What i would like to run in my shed is a tumble dryer, lighting sockets for inside the shed and also one for outside, i would be very greatful if someone could give me the step by step instructions on doing this if it is possible.

Many thanks

Hello Darren, welcome to the forum. Your question at the moment is to open and vague for anyone to give any practical advice, more detail is needed. Firstly it would be useful to know to what extent you understand wiring regulations and installation practices. Then we need to know a lot more about the actual existing electrical installation, and layout of the property and distance from the shed, what materials the shed is constructed of. The most practical way to approach the question would be for you to give us your understanding of step-by-step instructions for the wiring, then we can confirm your existing ideas or can offer advice on any areas you are endangering yourself or others who use the property. Photographs of fuse box, earth connection, shed, view of the distance from shed to house would all be a great help to get you some answers.

Doc H.

 

[SLIPSHOD & SLAPDASH]

urm im not being funny but how do you intend to calculate the legth of run with the amperage required to find out the size of cable needed. without basic information like this the job is diffcult to say how to do it. another thing to think is is the origin of the electrics in the house tt? pme? tncs? or tns as this also makes a difference.

If thats aimed at me, i was going to bring all those points up later, also why do you think i mentioned Scotland

 

[Andy™]

understand that there are new rules and regs now to how to wire this up to my shed.

yes, 389 pages of them. or 464 pages in the new regs

 

[paul b b]

I would like to know if your going to export the earth lol

 

[Badger]

If thats aimed at me, i was going to bring all those points up later, also why do you think i mentioned Scotland

no slips it was aimed at the OP

I would like to know if your going to export the earth lol

please dont get steps started on that old banana ] ] ]

 

[Helmetvonspit]

Thanks for everyones input, i will try my best to give you all the info you all need

I have a cu in my house which is currently fitted with a RCBO B20 30ma breaker and only fitted with 2.5mm cable which runs along my flooring then up into my loft and is currently dormant by my sofits ready to run outside, my shed is wooden and 25mtrs away from my cu.

My needs are for 4x 2 way sockets, 1x twin strip light approx 6ft and my appliances will be for a tumble dryer(2400 watt), chest freezer, 2kw heater, and running a pc as this shed is going to be used as a summer house, i may install a kettle a radio ect aswell.

What i was going to do was to up my cable size and breaker from the house to 6.0mm and change the breaker(of which i am not sure of what size)then take it to a JB outside of my sofits and then run 6.0mm armoured cable pinned to my house wall down to the floor and bury the cable under ground to the shed(which would be 15 be 15 mtrs from the jb outdside), i would also like an outside power socket for garden lighting(Low wattage), lawnmower.

When i get to the shed i need a cu(Dont know what type) a rcd(Dont know what type), should i take the armoured cable straight to the cu or take it to a jb first, and would 2.5 cable be ok to run to all the sockets and lighting?

If i have missed anything please let me know and i will let you know the details.

Thanks again for helping guys

 

[steptoe]

you are already looking at 8kW of consumption,

6mm isnt going to be big enough!

 

[Badger]

id reckon 25mm armoured without seeing the job in question covers all senarios then!!!

 

[Helmetvonspit]

but surley thats why you guys are here to help others with questions or maybe i am wrong?

 

[steptoe]

without knowing more details,

its going to be at least 10mm, maybe even 16mm if I calc it out,

Im just a bit flat out busy just now, I'll try and do it in a bit if no-one else gets to it before me.

we still need to know your incoming supply type and arrangement though,

a picture of your meter, service fuse and existing consumer unit would be good.

 

[Badger]

in fairness we will help people but there are limits that we can advise on for safety reasons,

1) do you know how to work out the correct cable size - rcbo- mcb protection - length of run required on the cable so that the circuit is safe?

2) do you know how to check what earthiung arrangement you have at the origin of the supply and i dont mean the consumer unit or water/gas bonding earths!

3) have you got the experience to know how to correctly gland the armoureds and how to run the wiring in a safe manner to feed the sockets, lighting, and feed to the shed?

4) do have the knowledge how to test a circuit that you have installed and do you have the test equipment required for the test procedures. ie earth fault loop impedance? insulation resistance? rcd tripping? continuity?

this isnt a case of not wanting to help you by any means but this type of work is very complex work and requires a lot of knowledge to complete this install in a safe manner. please dont take this as not wanting to help but you seem very limited on knowledge and this is why you have been advised to get an electrician in who knows what they are doing, and not try and attempt this yourself.

 

[SPECIAL LOCATION]

but surley thats why you guys are here to help others with questions or maybe i am wrong?

You haven

 

[Helmetvonspit]

Thanks guys, let me tell you a little about my back ground it may help a little.

my job is a applications engineer and i design and install/programme frequency inverters and servo drive to control panels, so i have knowledge of 3 phase and control circuits within these drives, i am confident when it comes to 3 phase as it is my job but this is a different ball game, as i need to understand the way domestic appliances need to be wired, if i feel its too much for me i will call an electrician in and get it done but i thought i would try and get my head around it and install it myself, i am very greatful that you are all helping me and also how you are all concerned about my safety.

Steptoe, i will post some photos here tomorrow when the light is better.

Badger, the answer to question 1 is no, question 2 is no, question 3 i know how to gland the armoureds and question 4 i have a Megger MFT1552 that will check my circuits that i have installed.

If it all gets to much for me i will do as you say and call in a electrician as i too am concerned about safety to me and who ever is in my property.

Many thanks

 

[Sidewinder]

OP,

There is quite a difference between the requirements of EN 60204-1 & BS7671 though.