[RE-wrenches] Wago Connectors (221 series)

[Dan Fink]

Jason; From the Wago 221 data sheet, it's listed to UL 486C, 600V, 30A, Use
Group C (industrial) . I have a copy of UL486C, and voltage is just
specified for dielectric testing. That standard specifies tests with AC,
because it is easier (and cheaper) to generate and ramp up compared to DC,
and DC test platforms are relatively rare.

So my interpretation of UL486C is that because of AC voltage peaks compared
to RMS (Vpeak = Vrms x 1,414), a 1000VAC rated connector under UL486C would
need to be tested to 1414VDC. Working that math backwards, a 600VAC rating
would mean the DC dielectric rating would be equivalent to 424.33 VDC.

How that would apply to AHJs asking you questions, I do not know!

Dan Fink
Owner, Buckville Energy Consulting LLC
IREC Certified Instructor for PV and Small Wind Installation
NABCEP Certified PV System Inspector
d <dan.fink at greendustrialtraining.com>anbob88 at gmail.com
970-672-4342




On Fri, May 7, 2021 at 3:43 PM Jason Szumlanski <
jason at floridasolardesigngroup.com> wrote:

> In another thread these connectors were discussed recently. There was a
> question regarding the suitability for DC circuits. I don't think we came
> up with any answers or consensus on that. I see the connectors are UL
> listed to the 486C standard. I can't determine whether that is applicable
> to AC and DC circuits. Does anyone know?
>
> I have only used these on AC circuits and they have been very effective.
> Now I'm curious whether they can be used on DC circuits up to 600 volts.
>
> While on the subject, I noticed they are UL 467 listed for grounding and
> bonding. That's helpful where you have EGC splices for conductors up to #10
> AWG inside junction boxes.
>
> Jason Szumlanski
> Florida Solar Design Group
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20210507/9e470565/attachment.htm>