rising mains

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mego6000

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Hi guys

Does anyone know if there is a maximum limit for the size of rising main conductors?
I mean can the laying difficulty of the riser put a restriction on its size? And what is the maximum size have you seen?

Please note that I assume the following:
1- the risers are copper conductors in a concealed PVC pipes.
2- the building is a concrete building of about 25 m height.

Many thanks,

Amged
 
Re: rising mains

I'm not sure I understand your question completely but 300.19 details the vertical support requirements for conductors.
 
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