T1600 AC Power Electrical Safety Guidelines
The following electrical safety guidelines apply to an AC-powered T640 or T1600 router with three-phase AC power supplies:
- AC-powered routers are shipped with three-phase electrical cords with grounding. Do not circumvent this safety feature. Equipment grounding must comply with local and national electrical codes.
- For each three-phase delta AC power supply. you must provide an external listed customer site circuit breaker rated minimum 40 A (240 VAC) in the building installation, or as required by local code.
- For each three-phase wye AC power supply. you must provide an external listed customer site circuit breaker rated minimum 25 A (415 VAC) in the building installation, or as required by local code.
- The delta cores in the mains lead are labeled as follows:
- Wire labeled GND—Earth
- Wire labeled L1
- Wire labeled L2
- Wire labeled L3
- The wye cores in the mains lead are labeled as follows:
- Wire labeled GND—Earth
- Wire labeled L1
- Wire labeled L2
- Wire labeled L3
- Wire labeled N
 | Caution: For Juniper systems with AC power supplies, an external surge protective device (SPD) must be used at the AC power source. |
