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Anonymous Poster

Minimum Distance from Ground

07/13/2009 1:43 PM

can anyone help? what is the minium distance from ground for 480Volts.
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TVP45
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#1

Re: electrical distance

07/13/2009 3:21 PM

It would help if you tell us what code you live by and what's on the ground. Are you looking at NEC?

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Simon Wan
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#2

Re: Minimum Distance from Ground

07/13/2009 9:02 PM

Are you takling about 480V with bare wire or insulated wire.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#3

Re: Minimum Distance from Ground

07/14/2009 3:17 AM

It needs to be out of harm's way.

11kV is routinely run as bare conductor on brackets fitted to the top of wooden poles in rural districts here. At a guess, 5-6m above ground is the order of magnitude of the clearance, unless roadways etc. are underneath, in which case it may go to 7 or 8m with a protective earthed wire cradle underneath it.

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jack of all trades
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#4

Re: Minimum Distance from Ground

07/14/2009 8:29 PM

Please consult your local electrical standards and regulations for the answer relevant to your country and site. Alternatively get an electrician to perform the electrical work. If you are building a product, buy the relevant electrical standards.

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