In article , Terry wrote:

It sounds like your assumption that the outputs of the GFCIs have wire
nuts is incorrect. The outputs of GFCI receptacles (any I have seen)
are screws.

Depends on the age of the GFCIs. Back in the early to mid 1980s, at least,
some brands had wire leads instead of screw terminals.

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Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.