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advice needed please , what is the correct thing to do. The scenario:
-meter position and switch fuse @ front of house , with 100mA time delay protecting submain (TT SYSTEM)
-the above submain supplies a 17th ED split load DB at back of house (2 x 30mA rcds etc etc)
-submain is only 10mm T+E (4mm CPC within cable)
-@ the split load db it has 6mm cpc to earth rod close to this db (at back of house)
-should i connect 4mm cpc within twin and earth at switch fuse position to a 2nd rod via an addition 6mm earth?
(at front of house). ie front rod ---6mm---sw fuse ---4mm in T+E-----17ed db--------6mm-------back rod
-i believe the min for TT is 6mm and therefore the 4mm within the 10mm t+E submain throws me a little.
do i keep rods seperate, and only connect one of them to the sub main??
i guess ideal scenario would be to run an addition 6mm between db's or increase submain size, but this isn't viable really.
please can i have other opinions on his matter. thank you very much. ps new to this forum
merry xmas
-meter position and switch fuse @ front of house , with 100mA time delay protecting submain (TT SYSTEM)
-the above submain supplies a 17th ED split load DB at back of house (2 x 30mA rcds etc etc)
-submain is only 10mm T+E (4mm CPC within cable)
-@ the split load db it has 6mm cpc to earth rod close to this db (at back of house)
-should i connect 4mm cpc within twin and earth at switch fuse position to a 2nd rod via an addition 6mm earth?
(at front of house). ie front rod ---6mm---sw fuse ---4mm in T+E-----17ed db--------6mm-------back rod
-i believe the min for TT is 6mm and therefore the 4mm within the 10mm t+E submain throws me a little.
do i keep rods seperate, and only connect one of them to the sub main??
i guess ideal scenario would be to run an addition 6mm between db's or increase submain size, but this isn't viable really.
please can i have other opinions on his matter. thank you very much. ps new to this forum
merry xmas