sizing containment for T&E

[atm84]

Does anyone have experience sizing cable tray/ basket and trunking which is used for twin and earth cabling?

The on site guide only provides guidance and factors where single core PVC cables are used.

I am looking for help where twin and earth is used.

 

[shanky887614]

? t+e on basket and in trunking why? thats a new one on me.

yy,fp,flex etc is what you should be using in that containment

 

[atm84]

sizing containment for T&E

Twin and earth is cheaper than yy and flex. Quicker to install than singles.

 

[Pete999]

Does anyone have experience sizing cable tray/ basket and trunking which is used for twin and earth cabling?

The on site guide only provides guidance and factors where single core PVC cables are used.

I am looking for help where twin and earth is used.

What sort of trunking, plastic, metal can't understand why you would want yo run T&E in trunking unless it was for switch drops etc

 

[amlu]

cut a 10cm piece of containment, fill up with pieces of t+e and see how many will fit?

 

[atm84]

Does anyone have experience sizing cable tray/ basket and trunking which is used for twin and earth cabling?

The on site guide only provides guidance and factors where single core PVC cables are used.

I am looking for help where twin and earth is used.

What sort of trunking, plastic, metal can't understand why you would want yo run T&E in trunking unless it was for switch drops etc

I was mainly thinking of basket but wondered how trunking would be sized with T&E. I have come across it on some supermarket installs.

 

[shanky887614]

I was mainly thinking of basket but wondered how trunking would be sized with T&E. I have come across it on some supermarket installs.

only cowboys or house bashers put twin in trunking.

 

[Sintra]

I can understand the use of basket for t&e but certainly not trunking. No point in it whatsoever.

 

[atm84]

I was mainly thinking of basket but wondered how trunking would be sized with T&E. I have come across it on some supermarket installs.

only cowboys or house bashers put twin in trunking.

Why is that then?

 

[Silly Sausage]

I can understand the use of basket for t&e but certainly not trunking. No point in it whatsoever.

Aesthetics :smilielol5::smilielol5::smilielol5::smilielol5:

 

[telectrix]

only cowboys or house bashers put twin in trunking.

so what about T/E in basket or tray above suspended ceiling in offices with the drops in trunking?

 

[Dcf]

only cowboys or house bashers put twin in trunking.

I've just finished a 1.5 storey extension on Monday with a cinema room downstair
ran basket on brackets in the coomb with 1x for power t&e and1x for data hdmi ,speakers etc
reason?
i didn't want it all covered in 4ft of insulation and I wanted to keep the power and data stuff as far apart as possible .
looked very neat and tidy and was easy to install
and I didn't have to clip a shed load of cables to every joist.
so am I a cowboy or house basher then?

 

[atm84]

sizing containment for T&E

I appreciate all the comments but as usual the thread is going off on a tangent. Does anyone know a reasonable method for sizing containment for T & E?

 

[LeeH]

Post #9 gave it to you.

Use a length with a bend on and see how much will comfortably fit in.

 

[Silly Sausage]

Re: sizing containment for T&E

I appreciate all the comments but as usual the thread is going off on a tangent. Does anyone know a reasonable method for sizing containment for T & E?

Look at page 138 of your Green OSG.

 

[telectrix]

basket or tray, just use trhe rating factors e.g. cables touching/separated, etc. for trunking, use common sense. rate cables according to method B and don't overcrowd the trunking.

 

[atm84]

basket or tray, just use trhe rating factors e.g. cables touching/separated, etc. for trunking, use common sense. rate cables according to method B and don't overcrowd the trunking.

I'm not looking to size the cable, I'm trying to ascertain how many cables can fit on the basket/ tray or in the trunking.

 

[Plonker 3]

OP until you provide how many and what size t&e you are referring to you will not get a answer. At the minute your question is equivalent to how long is a piece of string.

 

[atm84]

I appreciate all the comments but as usual the thread is going off on a tangent. Does anyone know a reasonable method for sizing containment for T & E?

Look at page 138 of your Green OSG.

Like I already stated the OSG only provides guidance for single core cables.

 

[atm84]

OP until you provide how many and what size t&e you are referring to you will not get a answer. At the minute your question is equivalent to how long is a piece of string.

Its a generic question. how dies one calculate how many Twin and Earth cables can fit on x size cable tray. Yes I know you can work out the diameter if the cable and multiple, but in reality cables are not butted right up to each other. Is there a factor that is applied.