SWA armour supply to outbuilding, what CSA cable? and Reference Method?

[telectrix]

and if the supply voltage drops within permissible limits, e.g. @peak times, that's a drop of 6% which makes a mockery of your 3%.

 

[Deleted member 9648]

and if the supply voltage drops within permissible limits, e.g. @peak times, that's a drop of 6% which makes a mockery of your 3%.

Cant disagree with that mate, but the OP said he wants to go by the book.

 

[dinger809]

Nobody has mentioned the reference method. Clipped direct has a higher ambient temperature than buried, which is usually lower as it's cooler below 500cm. So, go for the one which has the higher impact on the temperature of the cable, so at least choosing clipped direct was right. And I still don't know why you are thinking about running 10mm armoured in conduit. The steel armour inside is there to protect the conductors. Good luck getting armoured around a bend

 

[Pete999]

Nobody has mentioned the reference method. Clipped direct has a higher ambient temperature than buried, which is usually lower as it's cooler below 500cm. So, go for the one which has the higher impact on the temperature of the cable, so at least choosing clipped direct was right. And I still don't know why you are thinking about running 10mm armoured in conduit. The steel armour inside is there to protect the conductors. Good luck getting armoured around a bend

Think the OP has already binned that idea

 

[dinger809]

Think the OP has already binned that idea

I'll try to keep up!!!

 

[Pete999]

I'll try to keep up!!!

Next time you get lines or detention.

 

[Sparky_marky2]

Hi all, Thank you for your feedback you were right I have scrapped the SWA in galv conduit idea.
Just a quick one would I be able to use 6mm SWA as the subboard distribution supply as I have spoken to another spark I know who thinks this would be adequate hence why originally thought that would do, and also I remeasured the run and its 30m of SWA not 22m as stated before.

Regards,

Mark

 

[Sparky_marky2]

Also I say this as I got a reply from someone else saying 10mm SWA is "over kill"

 

[dinger809]

Also I say this as I got a reply from someone else saying 10mm SWA is "over kill"

I've just calculated this and it IS 10mm, it can't be longer than your previous measurement and be a smaller conductor!!. If your friend says it's overkill, I hope can be at the enquiry with you to explain the fire

 

[telectrix]

40A through 6.0mm SWA is well within it's capacity. that's why i said 10.0mm was overkill.