Electrical installation 79
Routing the cables
When you route the cables:
• Install the DC power, AC power and control cables on separate routes.
• Make sure that the cable trays are electrically bonded to each other and to the ground.
• Make sure that there is at least 500 mm (20 in) of separation between the power
cables and the control cables.
• If the control cables cross the power cables, set them at angle as close to 90 degrees
as possible.
• If you use four-conductor AC cabling, install the phase cables symmetrically and near
each other. Asymmetrical installation can induce current in the grounding cables and
metal structures.
AC cabling
DC cabling
Control cabling
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