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Discuss Distribution circuit to Sub Main in the Commercial Electrical Advice area at ElectriciansForums.net

M

mercanlandy

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Hi, I need to know what info I should enter on the periodic inspection report in regard to the distribution circuit. The form requests the size of the phase conductor and the cpc". The distribution circuit is a 4 core SWA and the armoring is used as the cpc. What should you enter as the CSA" of the cpc. The measured Ze at the sub main was 0.14 ohms.

All help appreciated.

regards

SC
 
E

EasyFox

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  • #2
Hi, I need to know what info I should enter on the periodic inspection report in regard to the distribution circuit. The form requests the size of the phase conductor and the cpc". The distribution circuit is a 4 core SWA and the armoring is used as the cpc. What should you enter as the CSA" of the cpc. The measured Ze at the sub main was 0.14 ohms.

All help appreciated.

regards

SC
Might be helpful.
Swa armour csa's are listed.

http://uk.msnusers.com/SparkyHeaven/Documents/General%20Technical%20Information/SWA%20and%20Earthingby%20John%20Peckham%20version%20Jul06.pdf

PS it's not my work the credit must go elsewhere.
 
G

Grae79

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T

TonyM58

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  • #4
I have seen PIR's where under CPC on a SWA circuit they have just written SWA.

To be honest if you use 2.5mm SWA (for example) then the CPC (armour) is always goona be pretty muchn the same
 

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