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12-11-2014, 09:36 AM #1
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
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12-11-2014, 01:05 PM #2
Re: Electric circuit size for Fujitsu Ducted System
Is it a straight MCB or an RCD?
Brian - Newton Abbot, Devon, UK
Retired March 2015
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12-11-2014, 08:13 PM #3
Re: Electric circuit size for Fujitsu Ducted System
Just a circuit breaker
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12-11-2014, 10:44 PM #4
Re: Electric circuit size for Fujitsu Ducted System
Have you measured the current draw?
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12-11-2014, 11:30 PM #5
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
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17-11-2014, 07:52 AM #6
Re: Electric circuit size for Fujitsu Ducted System
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 goodLast edited by e1ectr1c; 17-11-2014 at 07:56 AM.