On Fri, Oct 2, 2009 at 10:57 AM, Randall <tr3driver@ca.rr.com> wrote:
> > I bought a junction box and was amazed to find that they don't include a
> > ground bar. Why not?
>
> Mostly so they can sell it to you separately ... in some cases it's not
> required.
>
And in some, it's prohibited.
>
> > In the building, do I run a separate ground spike?
>
> I don't know what the NEC requires (or local code in your area); but that
> is
> what I would do.
>
NEC 2008 makes a bunch of changes to how this is required to be done. As I
understand things (and i might be wrong) it requires a four-wire connection
to the main panel, prohibits bonding neutral and ground in the sub-panel,
and requires a ground connection at the subpanel. That's typically a
grounding rod, but there are other options.
(In previous editions of the code, you were allowed to use a three wire
connection (no ground), as long as there wasn't a metallic connection
between the building. The problem with this is that someone will come along
and add one later. Then you get scary ground loops. )
--
David Scheidt
dmscheidt@gmail.com
--
David Scheidt
dmscheidt@gmail.com
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