Onsite guide

[Ronald]

Hey guys i was looking at, the onsite guide and the tables with in it and I am finding them a little confusing to read/interperet. Can someone clarify this for me? Specifically table 7.1(i) the installation methods i can't seem to find them in the bs 7671 regs book, or they dont match up in both 2011 editions.. anyhelp would be much appreciated

 

[Andy78]

OSG tables 7.1(ii) and 7.1(iii) give you definitions of the installation methods used in table 7.1(i). These relate to methods for T+E cable.
The clue is where is says refer to note 2, and note 2 refers to tables 7.1(ii) and 7.1(iii)

Alternatively appendix 4 in BS7671 has all the descriptions of installation methods and derating factors.

 

[Ronald]

Thaanks Andy

 

[SirKit Breaker]

Just for your info,

Installation reference methods 101,102,103 and 104 are for flat twin and earth only. All the other methods mentioned in APPX 4 are for other types of cables.

Cheers.........Howard

 

[Ronald]

Ahhhh ok, this is helpful cheers to you both for speedy replies!