Extreme DIY

[333rocky333]

Sometimes you dont use the former radius, you do it gradually moving your pipe towards, you bit at a time, to form a larger radii,.

Bas, you should have just drilled a hole in a lump of wood, that was the way they used to do that.
Theres some good examples on the underground.

 

[mikhailfaradayski]

Do the two bends have a gap between them or does one rad run straight into the other?

Rad?

sorry, rads = radii, bends

The couple would allow you to adjust how perpendicular the bends are, if you form it in one and you're out a bit, you'll have to stress the conduit to pull it to the wall.

Hadn't thought about that. Not so much the possibility of me getting it wrong (as real as that is), but the chances of the two walls actually being at a right angle, or even at the same angle all the way up.

could be either, ive had fun and games getting sets correct, especially if you've got a long length hanging sideways out the former. Its easy to let it slip a bit.

Got some Kopex pliable - maybe I'll use that.

if its not on show, job done!

Did you look at the kitchen ceiling?

Did you look at the driveway?

Awfully in-efficent method of covering that area in the manner they did, but im sure they put thought into, considered altenatives and are pleased with the effect it provides.

 

[RF Lighting]

Got some Kopex pliable - maybe I'll use that.

if its not on show, job done!

But Kopex is not permitted for use as a CPC, and as a result defeats the whole point of using steel conduit in the first place.

 

[mikhailfaradayski]

Got some Kopex pliable - maybe I'll use that.

if its not on show, job done!

But Kopex is not permitted for use as a CPC, and as a result defeats the whole point of using steel conduit in the first place.

what if he's runing a CPC conductor and only using conduit as mech. protection? Although i know you can, personally ive always ran a core and never relied on the tube as CPC.

 

[ban-all-sheds]

The mechnical protection has to be suitable for use as a cpc, even if not used as such.

Until you drill through it into the cable.

 

[NotHimAgain]

I do not disagree that, according to BS 7671, flexible or pliable conduit cannot be used used as a protective conductor [543.2.1].

The basis for this is that these containment systems can, and all to often do, fail when subjected to mechanical stress. A common mode of failure is that the conduit parts company with the gland that is supposed to secure it, and that also provides an electrical connection to the metallic parts of its sheath. This will most often be due to excessive stress.

Whilst such stresses may be possible when the conduit can be subject to movement, it is far less likely that this would happen if movement is restricted. Now this would be the situation if the conduit were to be used to contain wiring concealed within a wall or partition [522.6.6], or within a wall or partition with metallic internal parts [522.6.8].

Flexible or pliable conduit usually has a substantial metallic sheath that would be very unlikely to vaporise under the sort of fault conditions that might be encountered on a final circuit supply items such as 13A socket outlets.

So it could offer a solution to some of the situations where a sheath is required to act as a protective conductor. All it needs is for JPEL/64 to get its act together and act . It would offer superior protection to that provided by the BS 8436 cables that I have looked at - these have fault current limitations and many people seem to be unaware of them.