SRX3400 Services Gateway Grounding-Cable Lug Specification
The cable attaches to the grounding cable (see Figure 1) and two M5 screws are used to secure the grounding cable to the grounding point.

Before services gateway installation begins, a licensed electrician must attach appropriate cable lugs to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the services gateway.