Supplies to outbuilding CU's

[Guitarist]

Do you guys think that the majority of electricians actually bother using the adiabatic equation to decide whether the cpc of a T&E cable is adequate when supplying a CU in a garage/shed, or do most people just size the cable based on CCC and voltdrop?
I come across a lot of T&E strung between buildings and I often wonder.
Just something to add another thread to the forum

 

[telectrix]

i invariably would use 3 core cable. therefore the cpc is the same csa as the phase conductors. bonding of ecp's might be a different issue though.

 

[Richard Burns]

Once you have sized a long run for CCC and VD then there is hardly any point in calculating the minimum earth size as it will be way over, on short runs it will be like any other circuit it will comply because the run is short enough.

 

[D Skelton]

Do you guys think that the majority of electricians actually bother using the adiabatic equation to decide.....

I would hope so, but then again, if you rephrased the question and asked how many 'electricians' even know what the adiabatic equation is? I'd say not that many.

 

[telectrix]

isn't the adiabatic a sea by the side of italy?

 

[D Skelton]

isn't the adiabatic a sea by the side of greece?

I thought that was the sea of austerity???

 

[telectrix]

sorry, it's italy. was never any good at geography, only got a grade 5 at 0 level.

 

[Octopus]

Do you guys think that the majority of electricians actually bother using the adiabatic equation to decide whether the cpc of a T&E cable is adequate when supplying a CU in a garage/shed, or do most people just size the cable based on CCC and voltdrop?
I come across a lot of T&E strung between buildings and I often wonder.
Just something to add another thread to the forum

Would a decent electrician do this?

 

[Guitarist]

Would a decent electrician do this?

You mean "wonder"?