Electrical Power Connections
Provide two AC power sources that are as electrically independent of each other as the installation site allows. At a minimum, the two power sources must be powered by separate circuit breakers (maximum of 20A) to AC power and, if possible, be independent of each other beyond that level. The more electrical separation between the two power sources, the less likely they will both fail at the same time. Due to redundancy in ztC Endurance systems, power to either side of the system keeps the system in operation.
Figure 9 shows an example of how to connect a ztC Endurance system directly to two separate AC power sources.
Figure 9: Connecting a System Directly to AC Power
| 1 | A‐side power cord | 3 | AC power outlets |
| 2 | B‐side power cord | 4 |
AC power (mains) distribution circuit breakers (maximum of 20A) |
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