There's a full stop at the end.Not sure why the lever connector page isn't showing
There's a full stop at the end.Not sure why the lever connector page isn't showing
Unless I'm missing something, I don't think that is necessarily strictly true, since I'm not aware of any regulation which requires double-pole protective devices in TT installations (the only requirement of which I'm aware being that 'isolation' be DP in TT installations).Most consumer units will only take the single pole switching RCBO's which are permitted with TN supplies but not with a TT supply with the latter all pole switching is required.
Exactly. However, as I went on to say, there is a potential issue (regs-wise) if there is an up-front TD RCD - since an N-E fault on a circuit protected by a SP RCBO will then take out the whole installation.As long as the main switch is DP (which I don't think there are many that aren't) then SP RCBOs are fine on a TT system.Unless I'm missing something, I don't think that is necessarily strictly true, since I'm not aware of any regulation which requires double-pole protective devices in TT installations (the only requirement of which I'm aware being that 'isolation' be DP in TT installations).Most consumer units will only take the single pole switching RCBO's which are permitted with TN supplies but not with a TT supply with the latter all pole switching is required.
Sorry - I don't follow that.As the CU has DP switches for the main and RDC sides, it seems my house is on the TT.
Sorry - I don't follow that.
Your installation is (you hope) earthed.slippyr4's right....I don't really understand this TT/TN stuff.
TT - no earth is provided by the supplier, you have an earth rod in the ground outside.
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