Suitable Fuse for a 1500 PSW Inverter

Discussion in 'Tech/Mech General' started by robpam47, Sep 19, 2014.

  1. robpam47

    robpam47 Funster

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    Hi I am looking to fuse on the DC side a 1500 PSW Inverter running small items ie tv,mobile phone charging, electric bike charging, laptop .Is there a formula for working out the size of fuse. All help appreciated. Robert.
     
  2. scotjimland

    scotjimland Funster Life Member

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    Fuses are fitted to protect the cable from overload / overheating.. so the fuse size should be calculated to the max safe full load current of the cable..

    A 1500 watt inverter on full load will draw: w/v = 1500/12 = 125A

    do you know what size the cable is .. ?
    are you using what has been supplied or fitting your own ?
    and if so what is the length ?

    For example.. if your cable run is 1 mt you will need 25mm cable (acceptable loss of 2%)

    that should be protected by a 125A Fuse.

    you can calculate cable sizes here http://www.solar-wind.co.uk/cable-sizing-DC-cables.html
     
    Last edited: Sep 19, 2014
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  3. robpam47

    robpam47 Funster

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    Thanks very useful info have bookmarked site. Robert
     
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