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68 Planning the electrical installation
The cable trays must have good electrical bonding to each other and to the
grounding electrodes. Aluminum tray systems can be used to improve local
equalizing of potential.
A diagram of the cable routing is shown below.
Input power cable
min 200 mm (8 in.)
Control cable ducts
Not allowed unless the 24 V cable is
insulated for 230 V (120 V) or
insulated with an insulation sleeving
for 230 V (120 V).
Drive
90°
Control cables
230 V
(120 V)
24 V
Motor cable
Power cable
Motor cable
min 500 mm (20 in.)
230 V
(120 V)
24 V
Lead 24 V and 230 V (120 V) control
cables in separate ducts inside the
cabinet.
min 300 mm (12 in.)
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