help on neutral and ground 480 volt

Posted by on December 2, 2008, 2:03 pm

i have a 40 year old panel with 3 hot wires. the panel is 480 volt
with no neutral and ground. what do i have to do. can i run a neutral
from another box?

Posted by Voyager on December 2, 2008, 2:50 pm

mclawscustoms@gmail.com wrote:

> i have a 40 year old panel with 3 hot wires. the panel is 480 volt
> with no neutral and ground. what do i have to do. can i run a neutral
> from another box?
>
>
>

It sounds like you are dealing with 3-phase in a delta configuration.
What you have to do is contact an electrician knowledgeable in working
with such circuits.

Posted by Cwatters on December 2, 2008, 3:47 pm

> mclawscustoms@gmail.com wrote:

>> i have a 40 year old panel with 3 hot wires. the panel is 480 volt
>> with no neutral and ground. what do i have to do. can i run a neutral
>> from another box?

> It sounds like you are dealing with 3-phase in a delta configuration. What
> you have to do is contact an electrician knowledgeable in working with
> such circuits.

I second that. Don't mess with it.

http://205.243.100.155/frames/longarc.htm#480_volt_arc_flash

Posted by jamesgangnc on December 2, 2008, 4:44 pm

>i have a 40 year old panel with 3 hot wires. the panel is 480 volt
> with no neutral and ground. what do i have to do. can i run a neutral
> from another box?

That's some serious electricity. What is feeding it? Can't you run a
ground from the source. Why do you need a neutral? Or do you really just
need a ground?

Posted by Erik Dillenkofer on December 2, 2008, 6:29 pm

What you need to do is pick up the phone and call an electrician!

>i have a 40 year old panel with 3 hot wires. the panel is 480 volt
> with no neutral and ground. what do i have to do. can i run a neutral
> from another box?
>

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