[RE-wrenches] Ilsco IPC's Engineering Hold

[Jason Szumlanski]

We use B-Taps, but supply-side connections are getting fewer and fewer with
all of the PCS options on the market now.


Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
Florida Certified Electrical Contractor EC13013208


On Fri, Oct 24, 2025 at 12:00 PM AE Solar via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Wrenches,
> I called Ilsco today to get some part numbers for IPCs rated for supply
> side connections, and they said that "all their part numbers are on an
> engineering hold and are not to be sold". He said that was all he was
> allowed to tell me.
>
> I know that their IPC-250-4/0 is rated for supply side connections (as
> per NEC 2023) and had been calling to see if any of their smaller IPC's
> were rated yet. Anyone have any more information on this 'engineering
> hold'? What are folks using for supply side connections on residential
> systems for NEC 2023? Thanks
> Adam
>
> Adam Katzman (he/him)
> Autonomous Energies | Owner/Operator
> www.AutonomousEnergies.com <http://www.autonomousenergies.com>
> (518) 567-1468
>
>
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