Results 1 to 6 of 6
  1. #1
    Join Date
    Jul 2012
    Location
    Australia
    Age
    56
    Posts
    61
    Rep Power
    12

    Electric circuit size for Fujitsu Ducted System



    Hello
    Just wondering what elec supply required for a 14 kw Ducted inverter.The one I am servicing is rated 22.5 amps max and is tripping a 25 amp circ breaker (4 mm wire) wondering if a 6 mm circuit 32 amp breaker would be more appropriate?
    Interested to know what others recommend?
    Any info appreciated



  2. #2
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    76
    Posts
    11,192
    Rep Power
    60

    Re: Electric circuit size for Fujitsu Ducted System

    Is it a straight MCB or an RCD?
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

  3. #3
    Join Date
    Jul 2012
    Location
    Australia
    Age
    56
    Posts
    61
    Rep Power
    12

    Re: Electric circuit size for Fujitsu Ducted System

    Just a circuit breaker

  4. #4
    Join Date
    Oct 2001
    Location
    Nottingham UK
    Posts
    5,733
    Rep Power
    51

    Re: Electric circuit size for Fujitsu Ducted System

    Have you measured the current draw?

  5. #5
    Join Date
    Jul 2012
    Location
    Australia
    Age
    56
    Posts
    61
    Rep Power
    12

    Re: Electric circuit size for Fujitsu Ducted System

    Yes the breaker trips after approx 10 - 15 mins, I got on to Fujitsu this morning they suggest the circuit should be 6mm 32amp breaker. The macine has an issue ( compressor/inverter) but I wanted to find out circuit size as it seemed to close to max amp rating
    Thanks for your replys

  6. #6
    Join Date
    Apr 2013
    Location
    Sydney
    Age
    35
    Posts
    6
    Rep Power
    0

    Re: Electric circuit size for Fujitsu Ducted System

    Quote Originally Posted by RBM View Post
    Yes the breaker trips after approx 10 - 15 mins, I got on to Fujitsu this morning they suggest the circuit should be 6mm 32amp breaker. The macine has an issue ( compressor/inverter) but I wanted to find out circuit size as it seemed to close to max amp rating
    Thanks for your replys
    In the Fujitsu install manuals they say ASTG54 ducted systems require 5.3mm cable ( so 6mm) and 32A breaker

    One thing i do hate about installing Fujitsu's is the cable size they recommend. Its always massive overkill for the circuit breaker size, where as Daikin, Mitsubishi, Samsung etc are pretty good
    Last edited by e1ectr1c; 17-11-2014 at 08:56 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •