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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Immersion heater switch - terminals - help please.
I have purchased a 20A immersion heater switch with no paperwork included. Can someone advise me how to wire it? Looking at the back of the switch there there are three terminals on the left side: Earth, L2 L1. On thr ight side, there is: Earth N2 N1 Which wires from the two 3-core cables (mains feed cable and immersion heater cable) go where? Thank you. Al |
#2
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Immersion heater switch - terminals - help please.
On 26/01/12 12:29, AL_n wrote:
I have purchased a 20A immersion heater switch with no paperwork included. Can someone advise me how to wire it? Looking at the back of the switch there there are three terminals on the left side: Earth, L2 L1. On thr ight side, there is: Earth N2 N1 Which wires from the two 3-core cables (mains feed cable and immersion heater cable) go where? Thank you. Al The mains cable goes L1 Brown N1 Blue E Green/Yellow The Immersion cable L2 Brown N2 Blue E Green/Yellow Andy C |
#3
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Immersion heater switch - terminals - help please.
Andy Cap wrote in
: The mains cable goes L1 Brown N1 Blue E Green/Yellow The Immersion cable L2 Brown N2 Blue E Green/Yellow Andy C Many thanks! Al |
#4
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Immersion heater switch - terminals - help please.
On Jan 26, 12:29*pm, "AL_n" wrote:
I have purchased a 20A immersion heater switch *with no paperwork included. Can someone advise me how to wire it? Looking at the back of the switch there there are three terminals on the left side: Earth, L2 L1. On thr ight side, there is: Earth N2 N1 Which wires from the two 3-core cables (mains feed cable and immersion heater cable) go where? Thank you. Al L1 - should be the live supply N1 - neutral supply L2 - switched live N2 - switched neutral All protective earth wires are permanently bonded together. There will be seperate earth bonding points so as to enable solid core connection from the supply and flexible wire connection to the tank. The permanent conducter between the two earth bonding terminals is not always completely visible (or at least not obviously). |
#5
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Immersion heater switch - terminals - help please.
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#6
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Immersion heater switch - terminals - help please.
On 26/01/2012 15:59, AL_n wrote:
wrote in news:55cda99b-d7dd-45f6-99e3- : L1 - should be the live supply N1 - neutral supply L2 - switched live N2 - switched neutral All protective earth wires are permanently bonded together. There will be seperate earth bonding points so as to enable solid core connection from the supply and flexible wire connection to the tank. The permanent conducter between the two earth bonding terminals is not always completely visible (or at least not obviously). So there IS a connection from one earth terminal to the other (although not visible), yes? I should have tested that with my ohm meter, but I was assuming that the two terminals must surely be connected... and now I am no longer at the premises. They will be joined. But as you say, if ever in doubt, a quick resistance check will tell you what you need to know. The switch itself is a strange one. It has three red LEDs which shine through the white plastic switch fascia! (relying on the tranluciency of the plastic to be visible) - Made by Legrande... Discontinued model!. I hope that doesn;t mean it was a bad design in some way. Otherwise, I'm surprised they discontinued it, because aesthetically, I think it's nicer- than the type with a small red plastic window with a neon bulb behind. Thanks to all for the clarifications. Al -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#7
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Immersion heater switch - terminals - help please.
On Jan 26, 3:59*pm, "AL_n" wrote:
thirty-six wrote in news:55cda99b-d7dd-45f6-99e3- : L1 - should be the live supply N1 - neutral supply L2 - switched live N2 - switched neutral All protective earth wires are permanently bonded together. *There will be seperate earth bonding points so as to enable solid core connection from the supply and flexible wire connection to the tank. The permanent conducter between the two earth bonding terminals is not always completely visible (or at least not obviously). So there IS a connection from one earth terminal to the other (although not visible), yes? I should have tested that with my ohm meter, but I was assuming that the two terminals must surely be connected... and now I am no longer at the premises. I think it was a condition of the standards in this country that the earth bar could be seen to be intact, even if not completely open, it could be seen from a side appature. The switch itself is a strange one. It has three red LEDs which shine through the white plastic switch fascia! (relying on the tranluciency of the plastic to be visible) - Made by Legrande... Discontinued model!. I hope that doesn;t mean it was a bad design in some way. Some models become discontinued due to a change in catalogue reference. It could be just that your supplier is getting a better deal on another manufacturers products he considers of equal quality. Otherwise, I'm surprised they discontinued it, because aesthetically, I think it's nicer- than the type with a small red plastic window with a neon bulb behind. Thanks to all for the clarifications. Al |
#8
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Immersion heater switch - terminals - help please.
On 26/01/2012 12:29, AL_n wrote:
I have purchased a 20A immersion heater switch with no paperwork included. Can someone advise me how to wire it? Looking at the back of the switch there there are three terminals on the left side: Earth, L2 L1. On thr ight side, there is: Earth N2 N1 Connect your input mains cable to one earth, L1 and N1, connect the load to the other earth, L2 and N2 -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
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