What are the potential issues when using an unshielded cable?

• Susceptible to EMI (Electromagnetic Interference), especially in environments with rapid switching of high voltage or high current loads (e.g., motor power supplies), which may cause light flickering or unstable signals.

• If the cable duct contains only general DC power and there is no high-frequency (above 100 kHz) high-current switching, a shielded copper braid cable is generally not required.

• However, if both AC and DC power cables are routed within the same cable duct, particularly in the presence of high-interference equipment such as motor power lines or variable frequency drives (VFDs), the use of a cable with a shielding copper braid is recommended to minimize EMI interference and prevent light flickering or signal instability.