Taking cables from a house to a garage

[Dambo]

When supplying power from a house to a separate garage, instead of burying the cables, would it be fine to attach, for example, a wooden length aerially between the buildings and run the cables in conduit along it?

 

[ianmacd]

As long as its not subjected to mecanical stress and is clearly visiable then I do not see an issue with it. Would still use SWA though.

 

[spinlondon]

What about using a length of Unistrut bolted to the walls.

Won't have to worry about the wood rotting then.

 

[Badger]

id go for armoured and a catenary wire if i was doing the job

 

[steptoe]

id go for armoured and a catenary wire if i was doing the job

personally I wouldnt bother, I think uni strut would be easier and look better.

can I ask the question,,,,?????? please.....

 

[bengie]

personally I wouldnt bother, I think uni strut would be easier and look better.can I ask the question,,,,?????? please.....

depends on the length of run, unistrut would look terrible over 30ft. me i'd go with unistrut upto 1 length at most but probably not over 3m anything over that i'd go for a catenary wire and in both cases SWA

infact i have done this exact thing recently at a council house, the run was about 30ft or so in length between buildings and went from the eaves of a 2 storey building to a single storey outhouse.

 

[steptoe]

depends on the length of run, unistrut would look terrible over 30ft. me i'd go with unistrut upto 1 length at most but probably not over 3m anything over that i'd go for a catenary wire and in both cases SWA infact i have done this exact thing recently at a council house, the run was about 30ft or so in length between buildings and went from the eaves of a 2 storey building to a single storey outhouse.

= 5m

why not longer?

I have done 10m runs in factories, and between buildings.

tho in all honesty, if its going to be anything over 5m or change of heights etc then I think burying it would be the only neat way of doing it.

why hasnt anyone asked the all important earthing question.?

OP, what sort of supply are you taking out to the garage?

 

[a1]

TN-C-S ]

PME ]

 

[ianmacd]

why hasnt anyone asked the all important earthing question.?OP, what sort of supply are you taking out to the garage?

Cos thats your job Steps and no one really asked it much while you were AWOL.

Also possibly because the OP didn't ask how to wire the garage just if it was ok to run over a bit of timber.

 

[Evans Electric]

Steps, while you were AWOL someone reported seeing your cart crossing Spaghetti Junction heading for the coast , with a load of topsoil on board. It was said that you were exporting earth.

 

[ianmacd]

PMSL

 

[Dambo]

= 5mwhy not longer?

I have done 10m runs in factories, and between buildings.

tho in all honesty, if its going to be anything over 5m or change of heights etc then I think burying it would be the only neat way of doing it.

why hasnt anyone asked the all important earthing question.?

OP, what sort of supply are you taking out to the garage?

I'm not actually going to do it, I was just curious to know how it was best done. Am I right in saying though the earth would come from the MET?

 

[steptoe]

Steps, while you were AWOL someone reported seeing your cart crossing Spaghetti Junction heading for the coast , with a load of topsoil on board. It was said that you were exporting earth.

bad day explode

 

[steptoe]

I'm not actually going to do it, I was just curious to know how it was best done. Am I right in saying though the earth would come from the MET?

it depends on what type of earthing system you have,

if you have TN-S then it is fine to take an earth from the MET,

if you have TT then you don't usually take the earth out, you provide another spike for the garage outside

if its TNC-S you don't take it outside (never, in normal circumstances), you need to make your garage into a TT system and provide a separate spike for it on its own earthing system.

 

[bengie]

steptoe, your sig has been bugging me for a while now as i feel its quite misleading.

while BS7671 in itself isn't a legal document the building regs are part of the law, in turn the building regs require you to follow BS7671 so whilst not a legal document in its own right it is required to be followed by a legal document and can be used against you in law so in a roundabout way is law.

the guy running our 17th edition update course told us they did it this way as any legal document needs to go though the house of commons to get changes approved and they felt that the electrical regulations needed to have changes/updates too frequently for this to be viable.

i don't know how true that last bit is but i believe the first part is close enough to the truth.

 

[steptoe]

steptoe, your sig has been bugging me for a while now as i feel its quite misleading. while BS7671 in itself isn't a legal document the building regs are part of the law, in turn the building regs require you to follow BS7671 so whilst not a legal document in its own right it is required to be followed by a legal document and can be used against you in law so in a roundabout way is law.

the guy running our 17th edition update course told us they did it this way as any legal document needs to go though the house of commons to get changes approved and they felt that the electrical regulations needed to have changes/updates too frequently for this to be viable.

considering the 16th was around for how long???????

i don't know how true that last bit is but i believe the first part is close enough to the truth.

its not misleading, it is a fact.

either something is statutory, or it is non statutory. BS7671 is non, that is why on your niceic certs there is a little box for you to record deviations in, you are not required to adhere to bs7671. though you are required to adhere to building regulations, and if I am correct I think they refer to bs7671 or equivalent minimum standards.

I agree that it can be used in a court of law, but so can the defence of being competent enough to follow other means to ensure the electrical installation is safe.

if you are specified materials or a design that does not adhere to bs7671 you are generally obliged to follow the specification and record the fact on your certs.

 

[spinlondon]

steptoe, your sig has been bugging me for a while now as i feel its quite misleading. while BS7671 in itself isn't a legal document the building regs are part of the law, in turn the building regs require you to follow BS7671 so whilst not a legal document in its own right it is required to be followed by a legal document and can be used against you in law so in a roundabout way is law.

the guy running our 17th edition update course told us they did it this way as any legal document needs to go though the house of commons to get changes approved and they felt that the electrical regulations needed to have changes/updates too frequently for this to be viable.

i don't know how true that last bit is but i believe the first part is close enough to the truth.

Not quite correct, Building Regs. do not require us to follow BS7671.

Compliance with BS7671 is seen as a way of complying with the Building Regs.

There is no legal obstruction preventing anyone from using a standard from another EU country, and BS7671 itself allows for departures from the Regs. in certain circumstances.

That aside, I do consider that Part P is a round about way of making BS7671 a legal requirement, as anyone who is a member of one of the schemes must comply with BS7671, when self certificationg.

 

[tom1]

it depends on what type of earthing system you have,if you have TN-S then it is fine to take an earth from the MET,

if you have TT then you don't usually take the earth out, you provide another spike for the garage outside

if its TNC-S you don't take it outside (never, in normal circumstances), you need to make your garage into a TT system and provide a separate spike for it on its own earthing system.

so when have you exported on tnc-s??

 

[gselectrical]

steptoe, your sig has been bugging me for a while now as i feel its quite misleading. while BS7671 in itself isn't a legal document the building regs are part of the law, in turn the building regs require you to follow BS7671 so whilst not a legal document in its own right it is required to be followed by a legal document and can be used against you in law so in a roundabout way is law.

the guy running our 17th edition update course told us they did it this way as any legal document needs to go though the house of commons to get changes approved and they felt that the electrical regulations needed to have changes/updates too frequently for this to be viable.

i don't know how true that last bit is but i believe the first part is close enough to the truth.

That is exactly what I was told whilst doing my 2391. J

 

[bengie]

That is exactly what I was told whilst doing my 2391. J

this is the only reason i mentioned it as i was told its law in a round about way.