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Two appliances, Two switches, one switch to power one and second switch to power both???

Discussion in 'General Electronics Discussion' started by Ritesh Narayan, Jan 8, 2017.

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  1. Ritesh Narayan

    Ritesh Narayan

    7
    0
    Jan 8, 2017
    Hi Friends,

    I am trying to wire an electrical circuit as follows and need some help:

    1) I have 2 switches (SPDT) in different locations away from each other.

    2) I have a 240V fan (35W) and a 240V pump (600W) that I need to control the power for.

    3) I want to turn ONLY the pump on with the 1st switch.

    4) I want to turn BOTH the pump and the fan on from the 2nd switch.

    Can I get some help with this circuit design? I think I may need to add a 240V relay to make this work which is ok :)
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,412
    2,780
    Jan 21, 2010
    Yes, a 240V relay would do the trick.

    The first switch turns on the pump. In parallel with the switch you wire the normally open contacts of the relay.

    The second switch would turn on the fan. In parallel with the fan you place the coil of the 240V relay.
     
    Ritesh Narayan likes this.
  3. BobK

    BobK

    7,682
    1,686
    Jan 5, 2010
    Or, easier, use a DPST switch for the second one.

    Bob
     
    Ritesh Narayan likes this.
  4. Ritesh Narayan

    Ritesh Narayan

    7
    0
    Jan 8, 2017
    Thank you for both suggestions. Perfect.
    So simple but I must of had a mental block!!!
     
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