Overhead garage supply

[Chrisg88]

Hi everyone new to the site.

I have been asked to wire a supply to a mates garage and i am just looking for a couple of pointers.
I havent done this type of instal before so excuse my ignorace if i have a couple of things wrong.

I plan on wiring overhead on a caternery wire as underground is not an option.
Supply will be in 6mm SWA 3core using a core as earth, the run will be 25m MAX, there is no extreneous metal or service pipes in the garage.
I will be coming off a 32a mcb in the house DB which is RCD protected and going to a metal clad CU with a 16a and a 6a mcb to power a double socket which will supply a freezer and occasionally a lawnmore. The 6a will be for a flourescent light fitting. I am quite happy that this is ok. If not please feel free to correct anything.

The problem i am having is the garage itsself is only 2.5m high and my mate doesnt really want a pole coming up from his garage to meet the 3.5m height requirement altho the point i exit the house is just over 3m.

The distance from the where i plan to exit the house to the point i enter the garage is 3-4meters. And doesnt cross a driveway it will cross a small path and over bushes until the garage.

Will i have to insist on bringing the hight up or will it be ok crossing the path at a slight angle down to the garage?


Thanks

 

[ericmark]

The question is who is inspecting and will they really care? In the main one with a domestic can ignore the height limits no one worries. But if it's being inspected by some council official then ask him first.

Some times it just needs common sense.

 

[westie101]

I'm sure if you though it through you could easily write a risk assessment to show if it was justified at the lower height and use that to decide how to do it

Lots of advice via Google on how to do one

 

[DaftPunk]

Can vehicles access under where you plan to fly the cable?

 

[JohnW2]

Can vehicles access under where you plan to fly the cable?

I presumed that the OP was implying that they couldn't (particularly one more than 2.5m high)...

... it will cross a small path and over bushes until the garage.

Kind Regards, John

 

[flyingsparks]

If it's only foot traffic under the cable, don't worry about it.

 

[deadshort]

Ye,or you could use the SWA as a flyover !

DS

 

[Chrisg88]

No vehicles will pass under.

Thanks everyone

 

[Chrisg88]

Ye,or you could use the SWA as a flyover !

DS

Sorry dont understand.
What do you mean use the SWA as a fly over?

 

[ban-all-sheds]

I will be coming off a 32a mcb in the house DB

Why?

 

[ban-all-sheds]

If it's only foot traffic under the cable, don't worry about it.

Absolutely.

I mean - nobody on foot ever carries a ladder, do they?

The clearance guidelines are not there for fun.

 

[Chrisg88]

I will be coming off a 32a mcb in the house DB

Why?

Mainly because theres a spare 32a in the DB

 

[JohnW2]

I mean - nobody on foot ever carries a ladder, do they? The clearance guidelines are not there for fun.

Indeed they're not. However, many extension ladders are >3.5m (closed), so if it was ladders that the author of the guidelines had in mind, he may not have done a very sensible job.

Kind Regards, John

 

[westie101]

So I really do wonder what the risks of a live armored 3c 6mm2 cable supported on a catenery over a path actually are?

Perhaps BAS could educate us

 

[JohnW2]

So I really do wonder what the risks of a live armored 3c 6mm2 cable supported on a catenery over a path actually are? Perhaps BAS could educate us

Quite. I would think that the electrical risks are minimal. Mechanical risks are presumably comparable with those associated with many washing lines (or even trees) - which, AFAIAA, are not regulated!

Kind Regards, John