CIRCUTOR OPTIM Series - Manual (Page 10)

OPTIM SERIES
10
available for this purpose.
Do not drill holes into the cabinet for feeding cables through them or for installing
support brackets. Drilling produces metal shavings that may enter the contactors or
other devices and cause short-circuits.
5.3.1 Power circuit.
- Connect input terminals L1, L2 and L3 (power circuit) to the grid using proper sized cable
in accordance with the LVR, ITC-BT-19. Generally, the cables of the three phases follow
the following colour code: L1 (black), L2 (brown), L3 (grey). If auxiliary voltage is required,
the neutral cable will be connected to N (colour blue, refer to section 4.9.3)
- In order to determine the size of the phase cables, the nominal current I
n
must be taken
into account, which is indicated on the equipment label and it should be able to withstand
an overload in transients of 1.5 times I
n
. The neutral cable will be a minimum of 1.5 mm
2