LEGRAND 3 109 53, Руководство по установке

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3 Installation
3.6 Preliminary operations
1. Shut down the loads connected to the UPS and remove the output cable of the UPS.
2. Turn off the UPS and remove the input power cord of the UPS from the wall socket.
3. Install a utility circuit breaker of max 20 A – curve C for input wiring.
4. Make sure the CAM Switch (Maintenance Bypass Switch) is on “UTILITY” position.
After these steps, follow one of the next paragraphs according to the model of the UPS installed.