I hope this is an easy question for you.
I am using a plastic box as a watertight enclosure for a single board computer and some accessories. I will be using an AC power source coming in through a 3 wire wet pluggable bulkhead connector. It is then converted to DC in the box to power the components (like the SBC, a serial-to-usb converter, etc). The AC/DC converter (Mean well brand) has a place for attaching a ground.
My question is: will using the ground screw on the AC/DC converter be enough to ensure this box is safely grounded? My gut says yes, especially since the box is plastic, but I am going to be using this in a saltwater environment. I really don't want to kill myself so I'd like to be extra sure before I deploy this baby.
EDIT: Unless the ship goes down, this box will not be submerged. It will only be exposed to saltwater spray during cleanup.