OP
trev
10.8kw @ 230v=46.9A
10.8kw @ 240v=45A mate.
10.8kw @ 240v=45A mate.
Discuss 10.8kW shower cable size in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
Come on Trev read the post properly he said 10800 Kw not 10.8 Kw10.8kw @ 230v=46.9A
10.8kw @ 240v=45A mate.
This is like what was know as the busbar rule, with the reverse fusing. As far as i know its still acceptable as long as the fault protection covers upstream supply. But its one of the old school methods and would not be concidered by most now.Example of reg 433.3.1 (ii).. would be fitting a 2way board with 2 x 16a mcb's you could effectively feed board of an Henley block in 6mm tails regardless of how large the fuse up-stream was because it cant draw long term a load exceeding the value of both mcb's.
This is like what was know as the busbar rule, with the reverse fusing. As far as i know its still acceptable as long as the fault protection covers upstream supply. But its one of the old school methods and would not be concidered by most now.
I agree with what was stated on the IET Forum to you, which is that Clipped Direct (C) is by far and away the most common reference method in a domestic installation. Also, as said, the shower is a fixed load which cannot overload and so the protective device need only provide fault protection.
table 4d2 is still for T+e bs6004 and gives a value of 52A in trunking or am I missing something
but that would mean there no insulation in the property, and most if not all new builds have insulation in them so i can't see how it would b ref method c
table 4d2 is still for T+e bs6004 and gives a value of 52A in trunking or am I missing something
yes I know that but it does not give ref method B(T+e in trunking)table 4d2 is also T+e but with other ref methods.Table 4D5 on the 17th (green one) pg 340 is T+E
Reply to 10.8kW shower cable size in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
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