TOSHIBA
4 - 2
4.1
Selection of Main Circuit Wiring Equipment and
Standard Cable Sizes (cont'd)
**
For cable runs greater than 500 FT. between the motor and inverter, consult the factory
before installing.
***
Use two parallel conductors instead of a single conductor. Use separate conduits for
routing parallel conductors (see note 3 this page).
****
Use three parallel conductors instead of a single conductor. Use separate conduits for
routing parallel conductors (see note 3 this page).
Notes:
1.)
Auxiliary relays used to switch inverter signals should be capable of switching
low current signals (i.e. 5mA).
2.)
The inverter has internal overload protection, but the Local, National, or
Canadian Electrical Codes may require external motor overload protection.
3)
When wiring with parallel conductors, the conductors should be kept together in
phase sets with U1, V1, W1, in one conduit and parallel conductors U2, V2, W2
in another conduit. The ground conductor should be in one of these conduits.
4.2
Grounding
The inverter should be grounded in accordance with Article 250 of the National Electrical
Code or Section 10 of the Canadian Electrical Code, Part I and the grounding conductor
should be sized in accordance with NEC Table 250-95 or CEC, Part I Table 16.
Use separate conduits for routing incoming power, power
to motor, and control conductors. Use no more than three
power conductors and a ground conductor per conduit.
CAUTION
Conduit is not a suitable ground for the inverter.
CAUTION
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