[RE-wrenches] Tapping Parallel Conductors

[August Goers]

Hi Garrison,

This is a new one for me - normally we always balance everything when
dealing with paralleled conductors. NEC 310.10(H) talks about conductors in
parallel and I can't see anything the explicitly forbids what you
explained. To be safe, I think it is worth contacting the PE to double
check that they were aware that there are three sets of parallel conductors
on each phase.

August
Luminalt


On Tue, Aug 21, 2018 at 8:09 AM Garrison <garrison.rie at gmail.com> wrote:

> Hi Wrenches,
>
> When making a supply side connection on parallel sets of conductors is it
> required to tap all conductors on each phase?
>
> I have a set of plans with an 800A interconnection on a 1200A service.
> Service has three parallel sets of 500MCM. Plans call for tapping just two
> conductors on each set of three. Plans are stamped by an EE.  I had been
> working under the assumption that if tapping parallel sets all conductors
> must be tapped.
>
> Any issues with not tapping all sets?
>
> Thanks,
>
> Garrison Riegel
> Rethink Electric
> 630-998-3629
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