I know I am extremely unlikely to find an exact replacement for this transformer, and I'm considering multiple parallel transformers to generate the required secondary voltages. I am not sure how to determine what the current rating on any transformer I source needs to be.

I have seen "The secondary current is equal to the product of the primary voltage and primary current divided by secondary voltage." Can I take the 1.25A fuse as the primary current (it must actually be somewhat less, no?) and use this in the calculations? For the CT secondaries, do I calculate (for example) the -10V -- +10V current, or do I need to also consider the 0 -- +10V current (which would be higher, if this calculation is right?)

My current thoughts are:

(120V * 1.25A) / 18V = 8.33A

(120V * 1.25A) / 30V = 5A

(120V * 1.25A) / 32V = 4.69A

(120V * 1.25A) / 20V = 7.5A

Thanks!