QUOTE(scorpiok @ Dec 12 2015, 01:38 PM)
Hi guys, need some advice here.
I just bought a new switch for my water heater. There are 2L2N and 1 symbol like wifi which I think it should be G (5 holes in total).
When I open the old switch, I realise that there are 2 black, 1 blue, 1 red and 2 green wires.
Should I just connect the 2 green wires to G?
If by "Wifi symbol" you mean this:I just bought a new switch for my water heater. There are 2L2N and 1 symbol like wifi which I think it should be G (5 holes in total).
When I open the old switch, I realise that there are 2 black, 1 blue, 1 red and 2 green wires.
Should I just connect the 2 green wires to G?
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Thats not "wifi" symbol thats the symbol for Earth-Ground
Sounds like you have a DPST switch which is common for high current things like water heater. 1N and 1L should be on one side, and on the other side is another N and L correct?
The Green wires are earth and looped (which is correct) so yes you connect it to the Ground point in the switch.
Blue and Red are the live wires. Im guessing the Blue wire is the thicker one built into the wall? Connect that to the "point 1" of the switch, then connect red to the "point 2" of the switch. - MAKE SURE YOU TURN OFF MAIN POWER FIRST!
Then connect the black wires to the Neutral, following the same order so that the supply line and line to the water heater are not crossed.
If in doubt consult an electrician.