High Voltage

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dhuegel

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Info Request, I need to know how to run a 4160 power run on top of the ground. Do I incase conduit in cement, or is the only way to bury it?
 
Re: High Voltage

Just curious why you have to do such a thing.

I think the rules are different depending on where it is. I have seen such conduits out in the open in a fenced in area dedicated to switchgear/transformers.

My guess is if its not a dedicated area for such things the rules might well be different.
 
Re: High Voltage

dh -

Take a look at NEC 300, Part II. It discusses over 600V. Above ground is in 300.37.

carl
 
Re: High Voltage

Yes, some of us might be interested in what your application is & what you have in mind.
Do you have experience in medium voltage installations?
 
Re: High Voltage

The application for the install would be from one power switch building approximately 500 ft. to a transformer room.
 
Re: High Voltage

For cost reasons, and safety going underground would be my preference. But I don't know the application!
 
Re: High Voltage

To: dhuegel, We had a job of running 11,000 volts, three-phase from a Cogen Plant to all of the Sub-stations on a plant that was at least one-mile square in area.
We ran seven three-phase feeders in Cable-Tray.
The tray ran from 6-feet to 20-feet in height around the plant.
I do not know what your application is, but cable tray could be one answer.
 
Re: High Voltage

2005 NEC
300.37 Aboveground Wiring Methods.
Aboveground conductors shall be installed in rigid metal conduit, in intermediate metal conduit, in electrical metallic tubing, in rigid nonmetallic conduit, in cable trays, as busways, as cablebus, in other identified raceways, or as exposed runs of metal-clad cable suitable for the use and purpose.
Click to expand...
 
Re: High Voltage

msd
Your post seems accurate, but I wonder what happens if you want to build an overhead power line on wood poles, similar to a utility? It seems like something is mising in 300.37.
Jim T
 
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