Hi All,

In the olden times, my Readers Digest DIY book said the two approved ways to get a supply to a shed were either burial (probably SWA) about a foot to 18 inches deep or else. Attaching to a wall (NOT a fence) at about 6 foot high. A catenary may have been a third option.

Is there a fourth option that is refs compliant??

I am thinking of running heavy duty metal conduit close to the ground and fixed to the concrete posts that hold the fence panels (so six foot centres I think).

Would this be compliant with either PVC, or SWA in it?
Presently the extension lead is used for HiFi, lighting and a 2KW Heater and comes of a spur from a 20A (MCB with an RCD feeding it Radial circuit (I THINK it may be a ring, but dont KNOW the topology, so had 20A MCBs fitted rather than 30A). I am thinking to run either 4mm or 6mm. I could give it a dedicated supply from the CU at extra cost.

On 02/08/2020 12:42, wrote:
Hi All,

In the olden times, my Readers Digest DIY book said the two approved
ways to get a supply to a shed were either burial (probably SWA)
about a foot to 18 inches deep or else. Attaching to a wall (NOT a
fence) at about 6 foot high. A catenary may have been a third
option.

Is there a fourth option that is refs compliant??

I am thinking of running heavy duty metal conduit close to the ground
and fixed to the concrete posts that hold the fence panels (so six
foot centres I think).

You could do that...

Would this be compliant with either PVC, or SWA in it?

SWA would be kind of pointless (i.e. you could run that, with it sat on
the ground against the fence)

Its easier to get singles through conduit than normal T&E

Presently the
extension lead is used for HiFi, lighting and a 2KW Heater and comes
of a spur from a 20A (MCB with an RCD feeding it Radial circuit (I
THINK it may be a ring, but dont KNOW the topology, so had 20A MCBs
fitted rather than 30A). I am thinking to run either 4mm or 6mm. I
could give it a dedicated supply from the CU at extra cost.

The general advice is the cable is cheap compared to the effort of doing
it, so opt for the bigger one to leave more options open in future.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

I had PVC against the fence, but my wife kept cutting it with shears / secateurs.

Would SWA on the ground against the fence take any harm from garden implements?

I'd bury swa in a trench instead of buggering about. You only need to do it once if you do it right. It might be handy to lay it inside a bit of duct in case you wish to make upgrades or alterations in future.

On Sunday, 2 August 2020 12:42:28 UTC+1, wrote:
Hi All,

In the olden times, my Readers Digest DIY book said the two approved ways to get a supply to a shed were either burial (probably SWA) about a foot to 18 inches deep or else. Attaching to a wall (NOT a fence) at about 6 foot high. A catenary may have been a third option.

Is there a fourth option that is refs compliant??

I am thinking of running heavy duty metal conduit close to the ground and fixed to the concrete posts that hold the fence panels (so six foot centres I think).

Would this be compliant with either PVC, or SWA in it?
Presently the extension lead is used for HiFi, lighting and a 2KW Heater and comes of a spur from a 20A (MCB with an RCD feeding it Radial circuit (I THINK it may be a ring, but dont KNOW the topology, so had 20A MCBs fitted rather than 30A). I am thinking to run either 4mm or 6mm. I could give it a dedicated supply from the CU at extra cost.

Metal conduit is fine but AIUI you can't fix it to a temporary structure.


NT

On 02/08/2020 16:08, wrote:
On Sunday, 2 August 2020 12:42:28 UTC+1, wrote:
Hi All,

In the olden times, my Readers Digest DIY book said the two approved ways to get a supply to a shed were either burial (probably SWA) about a foot to 18 inches deep or else. Attaching to a wall (NOT a fence) at about 6 foot high. A catenary may have been a third option.

Is there a fourth option that is refs compliant??

I am thinking of running heavy duty metal conduit close to the ground and fixed to the concrete posts that hold the fence panels (so six foot centres I think).

Would this be compliant with either PVC, or SWA in it?
Presently the extension lead is used for HiFi, lighting and a 2KW Heater and comes of a spur from a 20A (MCB with an RCD feeding it Radial circuit (I THINK it may be a ring, but dont KNOW the topology, so had 20A MCBs fitted rather than 30A). I am thinking to run either 4mm or 6mm. I could give it a dedicated supply from the CU at extra cost.

Metal conduit is fine but AIUI you can't fix it to a temporary structure.

Well there is temporary and temporary... concrete fence posts are
unlikely to blow away.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On 02/08/2020 14:12, wrote:
I had PVC against the fence, but my wife kept cutting it with shears / secateurs.

Would SWA on the ground against the fence take any harm from garden implements?


It could do. Any decent strimmer etc could split the outer sheath and
the SWA will rust.

--
Adam

On 02/08/2020 12:48, John Rumm wrote:
On 02/08/2020 12:42, wrote:
Hi All,

In the olden times, my Readers Digest DIY book said the two approved
ways to get a supply to a shed were either burial (probably SWA)
about a foot to 18 inches deep or else. Attaching to a wall (NOT a
fence) at about 6 foot high. A catenary may have been a third
option.

Is there a fourth option that is refs compliant??

I am thinking of running heavy duty metal conduit close to the ground
and fixed to the concrete posts that hold the fence panels (so six
foot centres I think).

You could do that...

Would this be compliant with either PVC, or SWA in it?

SWA would be kind of pointless (i.e. you could run that, with it sat on
the ground against the fence)

Its easier to get singles through conduit than normal T&E

If the conduit is at a low point then you should not use PVC cables as
condensation will cause the cables to be sat in water.


--
Adam

On 02/08/2020 14:12, wrote:
I had PVC against the fence, but my wife kept cutting it with shears / secateurs.

Would SWA on the ground against the fence take any harm from garden implements?

It more robust than other cables, but you can still damage the sheath
like that... (which if you tape it up well enough to keep the water out,
will normally be ok).

(its main claim to fame is that its much harder to damage you when
chopping into it, since you can't reach anything live without going
through a layer of earthed metal screen, which tends to create an earth
fault, and cut off the power).




--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On 03/08/2020 10:01, John Rumm wrote:
On 02/08/2020 14:12, wrote:
I had PVC against the fence, but my wife kept cutting it with shears /
secateurs.

Would SWA on the ground against the fence take any harm from garden
implements?

It more robust than other cables, but you can still damage the sheath
like that... (which if you tape it up well enough to keep the water out,
will normally be ok).

(its main claim to fame is that its much harder to damage you when
chopping into it, since you can't reach anything live without going
through a layer of earthed metal screen, which tends to create an earth
fault, and cut off the power).




While installing the SWA, slide a few 6-inch lengths of heat shrinkable
sleeving and leave them loose on the cable somewhere where they are out
of sight. Should you ever damage the outer sheath, just slide one of
these sections along to cover the damage and shrink it tight.

On Mon, 3 Aug 2020 12:12:27 +0100, Andrew wrote:

While installing the SWA, slide a few 6-inch lengths of heat shrinkable
sleeving and leave them loose on the cable somewhere where they are out
of sight. Should you ever damage the outer sheath, just slide one of
these sections along to cover the damage and shrink it tight.

Not water proof in my expeience, even the adhesive lined stuff. Self
amalgamating tape on the other hand is.

--
Cheers
Dave.

Cheers for all the advice.

Its going to be buried SWA.

Ill by a pre terminated length.

On 03/08/2020 23:39, wrote:
Cheers for all the advice.

Its going to be buried SWA.

Good.

Ill buy a pre terminated length.


Do you mean a pre cut length not pre terminated length?



--
Adam