Macon Welcome.

There is more than one way to do it and meet code, I will tell you the way I do it.

You will need:

3 single conductor lugs sized for the primary side conductors

3 single conductor lugs sized for the secondary side conductors.

2 three conductor lugs sized as close as possible to the secondary conductor.

Put 1 of the three conductor lugs on the XO.

After scarping paint from the enclosure bolt the other 3 conductor lug to the enclosure. 250.12

Land the primary and secondary side equipment grounding conductor to the enclosure lug.

From the enclosure lug to the XO lug install the correct size bonding jumper. Table 250.66

From building steel, or water pipe run a transformer electrode grounding conductor to XO. 250.30(A)(4) sized to Table 250.66

Now you have one spot left on XO to run the neutral to the panel.

Take a read through all of 250.30, it is not that bad and has the info you need.

Are you all set on overcurrent protection?

Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts