What is the maximum amperage on the 15 volt side for the Pro-ject Power Box ds2 Sources

Typical efficiency figures for toroidal transformers are 95% and on the ds2 Power Box Sources back panel stated "120V-50/60Hz 100VA", there're 3X18V-1A jack and 2X9V-2A jack = total 90VA. Its left only 5VA for the 15V and Trigger Out jack! But we also have to considering the actual power consumed by devices that connect to those jacks, so there could be more VA available for the 15V jack. And the inrush current during the start of a motor is significantly higher than the motor running current! Maybe that's the reason why Pro-ject not to list the max. current rating on the 15V jack.

The ds2 Power Box Sources lists 15v DC only, it does not give a listing for the amperage.
I have tried asking Pro-ject but they dont seem to know.

Since Pro-ject can't give you the answer, without a schematic or a Power Box on the test bench, what I can do is just guessing!

I believe pro-ject not specs the current rating is the inrush current during the start of a motor is significantly higher than the motor running current and the power supply will have to be able to withstand that inrush current. Therefore Pro-Ject recommend using Power Box RS UNI TT (15V/2A) for turntables with high power consumption and a heavy, mass loaded, platter.

https://www.henleyaudio.co.uk/products/Box-Design-Power-Box-RS-Uni-TT