Installation
Solar
Array
Connect all |
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array frames | Wiring ground) |
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together and | Sun Tie Unit | ||
ground | |||
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| DC (and |
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| Ground | |
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| Bar | |
| Array |
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| Ground |
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| Wire |
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*Optional Array Ground Wire 
*NOTE: An optional array ground wire may be required in many states as an additional permanent ground path in the event the inverter is removed for service. Check your local codes for grounding requirements.
| Main Utility | Utility |
| Breaker Panel | Meter |
| Ground |
|
AC Wiring | Bar | AC |
| AC | Wiring to |
| Wiring | Utility |
| Bonded Neutral Wire | |
| Utility |
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| Ground |
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| Wire |
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Sun Tie |
| Utility |
Ground |
| Ground |
Rod |
| Rod |
Figure
Required additional | If the PV array is located a considerable distance (over 100 feet) from the |
grounding | Sun Tie XR, then an additional ground rod must be installed close to the |
| PV array for the most reliable lightning protection, as shown in Figure 2- |
| 13. The grounded frame of the PV array provides a direct route to |
| dissipate lightning strikes through the closest ground rod. Please |
| reference NEC 2002 250.53 – “Grounding Electrode System |
| Installations” and NEC 2002 250.70 – “Methods of Grounding and |
| Bonding Conductor Connections to Electrodes” for specific grounding |
| requirements. |
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| Note: Always refer to your local codes for wiring and grounding |
| requirements, which may differ from the information given in this |
| manual. |
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