Clean Way to Connect a 12 Wire Motor

Have you asked the motor maker how, with parallel windings, they get 4 plant wires terminated onto the motor?

They designed it like that - hopefully they considered the user's problems when windings are paralleled.

Is this a case of motor maker changing the design without advising your company or your purchaser changing the supplier because it appears to be cheaper?

Either way, time & cost have been dropped onto the assemble/install area & you should kick back by demanding a solution from purchase!

Quite. The best source of advice is the original equipment manufacturer. The quickest source of advice may be had by the Original Poster picking up the telephone and asking some questions of that organisation, a skill that seems much in decline according to recent postings on CR4.

I agree. And when the OP picked up the phone and asked those in the organization some questions the reply was to use the following:

3M Motor Lead Splicing Kits
5300 Series
For 1000 Volts or Less Cables or 5/8 kV Shielded
and Non-Shielded Cables

which is great for a two wire splice. The problem was this showed up on our doorstep two weeks before it was to be running and we were told "make it work". And it does. You just can't always depend on what is at the other end of the phone.

"You can have it fast, good or cheap. Pick any two"

In UK/europe motors usually come with a terminal box like below incorporated - note the strap for Y connection.

Interesting to see other folk's problems, I guess you need wirecutters & heatgun to change a motor.

It would be rare for someone to parallel #2AWG to a motor, when you need more current than a single 500MCM or maybe 350MCM, then you might see parallel feeds. Regardless, motor manufacturers have a long history back to the late ‘60s of not taking into account wiring termination space requirements. Default specs for paper mills always required ‘oversize’ conduit box, and even those were marginal.

Maybe you can improve your connector selection by not paralleling the #2 feeds, connect each feed wire to one of the motor windings, i.e. 6 connectors instead of 3, might be able to get them in smaller range size. Stacking crimp type lugs may also save some space, plus improve reliability.

Maybe something like this...