Re: CQD answer published Wednesday, July 11, 2018 -Swimming Pool Junction Boxes
The following is from UL 1241:
A junction box shall have provision for the connection of any equipment grounding conductor in the range of 1.3 - 5.3 mm2 (16 - 10 AWG) inclusive.
A junction box intended for use with a low-voltage luminaire may be marked "Suitable For Use With A Low-Voltage Luminaire."
Senior Regulatory Engineer, UL LLC