Reference methods

[dtec dave]

Afternoon all

Just wondering on which reference method to choose..The installation is clipped direct everywhere apart from 1 metre of trunking as it enters the consumer unit, I think I know the answer (ref b) but wanted to check.

Constructive answers appreciated..

Dave

 

[Leesparkykent]

Reference method C IMO

 

[Andy78]

Strictly, method B, as the worst case scenario should be used for any portion of the cable run for derating purposes.

 

[telectrix]

B/C ............arty3:

 

[7029 dave]

C for me.

 

[hightower]

Thought you choose the one with the worst factor?

 

[richy3333]

Thought you choose the one with the worst factor?

Yeah, you do if the worst bit runs for more than 500mm?