I have a electrical box that I pulled out the 3 way switch for
examining the wiring. It has one two wire cable and one three wire
cable going into it. The white wires are wire nutted together and so
are the neutrals. However the neutrals in this box are not attached
to the switch. According to one reference, it says the neutrals
should be attached to the switch yet the author's own diagram just
shows the 2 neutrals wire nutted together and not attached to the
switch. Does it matter whether they attach to the switch or not?