I have a BlackBox SP090A cable modem surge protector, and I need to know how to connect the grounding wire. I contacted BlackBox, and they told me to connect the surge protector's grounding wire to my RM335A-R2 network cabinet, then connect the cabinet to my building ground. They said "safety ground has to go to the building ground", how should I do this?
Cable TV/Cable Modem Protector
RM335A-R2 Wallmount Cabinet