[CA] [CA11] Using legacy seatalk power supply for STng backbone

[riclevitt]

I have disconnected my st power supply and am adding a new one through an empty spur on my st-stng converter. I have a 12 guage supply direct to the breaker that used to power my old 4000 wheel pilot and now goes to my ACU100. It would be most convenient for me to to simply split this supply, and add a fuse to power my backbone.
Question is whether this permissible or must I wire all the way back to the breaker. The breaker terminal would be a bit crowded with 3 leads including the ES75.