Connecting power cords
Follow these guidelines before connecting power cords:
For lightning protection, the AC power should be led through an external lightning device into a 12500E switch. For more information, see "Appendix D Lightning protection."
Make sure the power switch on the power frame is in the OFF position.
For personal and switch safety, do not connect the power cords with the power. Power off the grounding strip, connect the power cords, power on the grounding strip, and then power on the switch.