Multi Paired Foil Shield Computer Cable, 80°C 30V UL 2919 NEC Type CL2 and CM, and 300V UL 2464 CSA PCC NEC Type CM

Twisted pairs help reduce unwanted electrical noise and crosstalk between signal circuits.

By twisting two conductors together, electromagnetic interference tends to affect both conductors more evenly, which helps receiving equipment reject common-mode noise. This makes twisted-pair construction useful for low-voltage data, control and communication circuits where signal quality is important.

A multi-pair cable allows several related signal circuits to be routed through one jacket.

This can simplify installation compared with running several separate cables between the same pieces of equipment. It can also make cable management, labeling and future maintenance easier in control panels, machinery and electronic systems. The number of pairs should be selected based on the circuits required by the equipment.

The overall foil shield helps block external electromagnetic and radio frequency interference from reaching the conductor pairs.

Industrial facilities often contain motors, drives, power conductors and other equipment that can generate electrical noise. An overall foil shield surrounds all of the pairs together, providing broad protection while keeping the cable compact. Applications requiring additional isolation between individual pairs may call for individually shielded pair construction.

The appropriate style depends on the required voltage rating, equipment specification and installation.

UL 2919 constructions are typically associated with lower-voltage electronic and data applications, while UL 2464 constructions are commonly specified for higher-voltage appliance wiring and control applications. Buyers should follow the equipment manufacturer's requirements and confirm the cable's complete listing, voltage rating and installation environment before selecting between the two.

Confirm the required pair count, conductor size, voltage rating, cable listing and operating environment.

You should also consider signal type, expected electrical noise, cable routing and whether an overall shield provides enough protection for the application. Providing the equipment specification or wiring requirements when requesting a quote can help ensure the correct cable construction is selected.