T & E Current Carring Capacity in trunking

[Hefferl]

Hi.

I believe T & E irun n trunking would probably be Reference Method B?

Trouble is I can't find the correct table to determine the Current Carrying Capacity - Table 4D5 only gives reference methods 100,101,102,103,C and A.

The cable in question is 10mm and is only being run in trunking for asthetic reasons.

Any ideas please?

 

[Zeespark]

Is the cable run with any other cables in the trunking? if not just class it as a clipped cable in My opinion.

AndyGuinness

 

[Hefferl]

Is the cable run with any other cables in the trunking? if not just class it as a clipped cable in My opinion.AndyGuinness

No its on its own - I didnt know whether to use table 4D2A which gives 52A as opposed to method C in table 4D5 which gives 64A?

 

[m4tty]

I think it will need to be derated in if trunking. The ccc is less than if clipped direct I believe

 

[AcombAndy]

In the Electricians Guide to the BR's, Table 2.3.1, It gives a current rating for 70c flat thermoplastic etc cables. It lists -Inst Ref B - 10mm - 52A. and claims this to be taken from Table 4D5 of BS7671. if that helps...

 

[Hefferl]

In the Electricians Guide to the BR's, Table 2.3.1, It gives a current rating for 70c flat thermoplastic etc cables. It lists -Inst Ref B - 10mm - 52A. and claims this to be taken from Table 4D5 of BS7671. if that helps...

Thanks for this i've checked the Electricians guide Table 2.3.1 - and the figures it gives for Method B are the same as those given in BRB Table 4D2A for Method B - which is conclusive enough for me

 

[andy_spark]

Table 4A2 to find your reference method and table 4D2A to find current carrying capacity, (unless it is Low smoke cable then 4E2A)

 

[JONOXNAM]

Heres a nice data sheet from Prysmian...

http://www.prysmian.co.uk/export/sites/prysmian-enGB/attach/pdf/6241Y.pdf