4
UL STANDARDS ON CABLING
To obey the UL (Underwriters Laboratories) regulations, use a UL-approved
Class 1 copper wire with a minimum heat resistance of +140 or +167 °F.
You can use the drive on a circuit that gives a maximum of 100 000 rms
symmetrical amperes, and a maximum of 600 V AC, when the drive is
protected by Class T and J fuses.
The dimensions of the cables must agree with the requirements of the
National Electric Code (NEC) and the Canadian Electric Code (CEC).
• The cables must be PVC-isolated.
• The maximum ambient temperature is +86° F.
• The maximum temperature of the cable surface is +158° F.
• Use only cables with a concentric copper shield.
• The maximum number of parallel cables is 9.
When you use parallel cables, make sure that you obey the requirements of the
cross-sectional area and the maximum number of cables.
For important information on the requirements of the grounding conductor,
see the NEC and CEC.
For the correction factors for each temperature, see the instructions of the
NEC and CEC.