Common Neutral Buss for low voltage and 120V?

[finess]

I'm working on my wiring for the control panel and was wondering if it's OK to use the same neutral buss for 120V and 24VAC?? Can I run a Marsh pump and ground it to the same Buss as a 24VAC valve??

Also, when I wire the SSR from the BCS-462 (low side 5VDC) does the neg side of the SSR go back to the BCS controller or to the neutral Buss?

[ECC]

Usually you want to keep the neutral and ground busses separate. Definitely keep the SSR control separate.

For the 24vac, I would keep the neutrals separate. Maybe others have some suggestions on this.