2 Wires Per Device

[TMO]

We are having a discussion where I work about landing 2 wires on devices and terminals in an industrial control panel for components in a 24Vdc control circuit.
The panel's primary circuit protection utilizes UL489 circuit breakers for the incoming feed and control transformers/power supplies. The 24Vdc control circuit utilizes UL1077 supplemental circuit breakers.
Can anyone help clear this up?

 

[Alan Davison]

From UL 508:
"29.3.6 Multiple conductors secured to a single termination point shall result in a reliable electrical and
mechanical connection made without loose, unretained, or severed stranding, and without a reduction in
the electrical spacings required in Section 10, Spacings."