loz
Junior Member
- Joined
- Oct 11, 2009
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I'm in my 4th year of my apprenticeship and consider myself quite competent. The downside is that i have only worked with underground cabling on caravan site distribution.
My dad has asked me to change his cu in his house as he wants to update it. the current situation is old 6 way 3036 board, tt earthing, no main bonding but a 6mm supplementary bond to the shower. The cable going to the tt rod is currently a 6mm.
My plan is to install a 10 way dual rcd board, 10mm main bond at point of entry on the copper water pipe, run a 16mm earth to a new rod and pit in the front garden (id like to aim for <50 ohms.
My quiestion is does the cu need to be protected by a separate 100mA rcd or is it ok to rely on the 2 30mA rcds in the board?
Also is it best to reconnect the 6mm supplementary bond to the shower? or leave disconnected?
Also should i leave the existing earth rod and 6mm cable connected to create a better earth? (current readin to rod is around 60ohms (main earth disconnected to test) , boards readiing is 0.29 due to supp bonding being in plaice
Any help would be much appreciated, loz
My dad has asked me to change his cu in his house as he wants to update it. the current situation is old 6 way 3036 board, tt earthing, no main bonding but a 6mm supplementary bond to the shower. The cable going to the tt rod is currently a 6mm.
My plan is to install a 10 way dual rcd board, 10mm main bond at point of entry on the copper water pipe, run a 16mm earth to a new rod and pit in the front garden (id like to aim for <50 ohms.
My quiestion is does the cu need to be protected by a separate 100mA rcd or is it ok to rely on the 2 30mA rcds in the board?
Also is it best to reconnect the 6mm supplementary bond to the shower? or leave disconnected?
Also should i leave the existing earth rod and 6mm cable connected to create a better earth? (current readin to rod is around 60ohms (main earth disconnected to test) , boards readiing is 0.29 due to supp bonding being in plaice
Any help would be much appreciated, loz