Bogdan Banasiewicz

Mon 10 Feb 2014 08:25pm

Hi Tony . Better if you ask another way . Example : I have item like ......... . Power of item is ................... W. Cable size is 6 mm and long .. ... m . Cable is lay on ........ or under ........... How is max current for this circuit ? Bogdan PROTON

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Andrew Procter

Wed 02 Apr 2014 12:49pm

Hi, Tony, if this is relating to a shower, I would advise 10mm2 twin and earth cable.

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Rafal Kaczynski

Mon 10 Feb 2014 09:17pm

Hi Tony I think this guide will let you to understand what it could be a power rating for 6 mm cable 34 amps max if cable is enclosed in conduit in thermally insulating wall 41 amps max if cable is enclosed in conduit on a wall or in trunking etc 47 amps max if cable is clipped direct So for domestic usage By using ohm low max wattage for 34 amp ( typically 32 amp fuse ) 230vx32amp=7360 Watts max I hope this will help Regards Rafal

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Cornelius Cretu

Mon 10 Feb 2014 07:43pm

The maximum current it can pass through a 6 sq mm cable is 47 Amperes if the cable is clipped direct (in open air). If the cable is surrounded by thermal insulation, then the maximum current allowed is 23.5 Amp. So in a domestic property, the allowed values might vary between 30 to 35 Amps, which means an appliance which consumes aprox. 7000 Watts.

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Colin Elston

Mon 10 Feb 2014 12:46pm

Good Afternoon Tony, The maximum current rating is dependant on many things such as installation method, cable grouping and other derating factors. What would be a better method would be describe the intended load and route of the cable to allow a better assessment of its suitability Colin Elston

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