Can a SPD be installed in a domestic installation without an earth conductor connecting it to the MET, because it will discharge the surge from the live line conductor to the neutral conductor?
or one connected L-N and the other N-PE (CT2 - usually on TT but can also be used on TN). Sometimes two SPDs are packaged up together into single 3-terminal device - just to confuse matters.
Which as it happens is an exact description of the SPD featured in the video that has the E terminal left unconnected.
or one connected L-N and the other N-PE (CT2 - usually on TT but can also be used on TN). Sometimes two SPDs are packaged up together into single 3-terminal device - just to confuse matters.
Which as it happens is an exact description of the SPD featured in the video that has the E terminal left unconnected.
