extra 13a outlet

[ban-all-sheds]

And why don't PVCu windows degrade? Same material.........

No it's not.

PVCu

The "u" stands for unplasticised...

 

[ban-all-sheds]

Look, I do find your bickering amusing, especially as I have stated that the job is done, but enough is enough, ok?

For those who really want to know what I did in the end....
I used white PVC twin and earth, which is attached to the outside wall via cable clips at about 1 foot above ground level.
I decided against the good advice of using galvanised trunking due to the fact I couldn't be bothered with the agro.
A reputable local wholesalers supplied the cable and told me I didn't need a special type of cable for outside as long as the circuit is RCD protected(which it is).
If this only last 10 years then no problem, I'll do the job again as I have about 20 metres of spare cable in the garage and the whole job only used 5 metres...so I reckon I have around 50 years worth of cable before I need to go and buy any....If I'm still alive at 90 then I will maybe consider that I should have used the galvanised conduit...mmmmmm

You're just a complete f**kwit aren't you. I hope you live alone - the thought of you coming to grief because of your stupidity and refusal to take advice doesn't bother me, but I'd hate to think that your gross negligence results in harm to someone else.

 

[yellowperil]

You're just a complete f**kwit aren't you. I hope you live alone - the thought of you coming to grief because of your stupidity and refusal to take advice doesn't bother me, but I'd hate to think that your gross negligence results in harm to someone else.

This is unneccessary language, and why is it that professionals use twin and earth outside, they must be F*** wits too in your eyes i suppose.
The colour means the cabling is very visible so is unlikely to ever be breached. and the clips every 20cm makes it even more secure.
my last comment about the cable in the garage lasting 50 yrs was a bit of fun, but no one on here seems to have a sense of humour, how sad.
i have a fully qualified electrician friend who is coming at the weekend to take a look at my work, but from what i've told him so far, he can't see i've done anything wrong....I think you all need to chill out a bit and stop taking everything so seriously.
Thanks for any positive responses.
I will not reply to any more posts as this whole thing has become a mountain from a molehill

Please all have fun.

 

[ban-all-sheds]

I will not reply to any more posts

Thank God for that.

And if you also promise that you won't come here again for advice which you then ignore because you can't be bothered to do a proper job then we'll all be very happy.

 

[masona]

i have a fully qualified electrician friend who is coming at the weekend to take a look at my work, but from what i've told him so far, he can't see i've done anything wrong.

Ask your qualified electrician to read your post and I'll interested to hear what the feedback is.

 

[towman]

Just a question about Conduit etc - what's position regarding UPVC trunking & T&E outside? Just seems the obvious cheaper, easier option than the steel stuff and should offer mechanical and Uv protection?

 

[ban-all-sheds]

It's not designed for use outside - you'd not be able to keep water out. This might not be an issue, but it's a factor to consider.

 

[paulh53]

no one on here seems to have a sense of humour, how sad,

Electricity does not have a sense of humour neither,
And that nice "white" cable running horizontally along an outside wall is going to be irresistable to curious toddlers
And all those big strong T&E cable clips will stop the toddlers from pulling the cable off the wall (Won't they)

I'm beginning to like "Part P" more, And more,

 

[ban-all-sheds]

Yes, because of course someone like yellowperil is bound to take notice of Part P, isn't he....

 

[towman]

It's not designed for use outside - you'd not be able to keep water out. This might not be an issue, but it's a factor to consider.

Surely with the use of suitable sealants at joints keeping water out would be no different to steel conduit? Obviously care needs to be taken at exit points etc (downward exits etc) - but still has to be better than no protection at all? (And is a damn sight easier to work with!) Anyway thanks for info/opinion!

Someone made a point about "outdoor" cable being black so it wouldn't be affected by sunlight? Think it will be just cosmetic and black will absorb MORE sunlight - (and get hotter)so it will probably age even quicker?

[/quote]

 

[ban-all-sheds]

It's not designed for use outside - you'd not be able to keep water out. This might not be an issue, but it's a factor to consider.

Surely with the use of suitable sealants at joints keeping water out would be no different to steel conduit? Obviously care needs to be taken at exit points etc (downward exits etc) - but still has to be better than no protection at all? (And is a damn sight easier to work with!) Anyway thanks for info/opinion!

I think you might be confusing us here:

what's position regarding UPVC trunking & T&E outside

Trunking:

Conduit:

 

[towman]

DOH! I meant Conduit- so I take it PVCu conduit is OK?

(note to self - don't think of one thing and type another!!)

 

[mapj1]

Yes. conduit OK outside.
Water ingress aside, ---
Note the effect of sunlight on PVC is not the heat melting it, but the UV leaching out the plasticisers, making it brittle and prone to crack if flexed or struck. In extrmis it crazes over like the glaze on overheated crockery and crumbles away in the hand, leaving the wire bare. This takes about 10 years in a sunny location, more in the shade.
Clearly this is more of a concern for a cable, than a rigid pipe, that doesn't have so many plasticsers to leach out.
To make PVC UV stable, a UV opaque dye (usually carbon black, but titanium dioxide can be used to make a white one) is added, so the damage is only to the top few hundred microns of the plastic, as the UV can't penetrate any deeper without great attenuation.
As this treatement lowers the insulation breakdown voltage, the jacket, but not the inner, of armoured cables are treated in this way, but the insulation and jackets on normal flexes and T+E are generally not.
Hope that helps a bit
M.

 

[towman]

I bow down to your greater knowledge - thanks for the clarification.

(But as an aside, would a black sheathed cable heat up to a greater extent and therefore have a lower current carrying capability than an equivalent white cable?)

PS - not trying to be deliberately obtuse - just interested

 

[mapj1]

A black cable will indeed get hotter, if the source of heaing is direct radiation, either from the sun, or from a bar electric heater or whatever. IF shaded, and its just in ahot place or nailed to a hot thing, then no, white and black the same temperature.
. But we all take this into account when we de-rate cables likely to be fully loaded in direct sun-shine, by chosing the appropriate correction factor, which is 20 degrees, don't we (note not 200 as the tlc direct website would have you believe. ) So in many cases the next size up in cable should be fitted in sun-exposed locations. The saving grace for all those who don't do the de-rating sums properly is that most electrics is not on full power all the time, and the thirsty stuff is heating circuits and fan heaters that are usually off on hot days....
hope that helps.
regards M.