turck Articles

Powerfast Connectivity

TURCK 7/30/2018

Installation Guidelines

TURCK’s powerfast products are easy to install by following a few simple guidelines:

• It is important to know the electrical requirements of the application and to select a cordset that has the proper amperage and voltage ratings for the application.
• Cables must be supported to prevent movement on the equipment. Per NFPA 79, the cable must be supported every 12 inches in a non-vertical run, every 36 inches in a vertical run and every 18 inches when suspended in air. The cable should also be supported at any connection points or terminations.
• The cordsets are not intended for disconnection under load. TURCK offers powerlok fittings that prevent the possibility of disconnection. These fittings are not required for use, but can be used as a precautionary measure.
• Power should never be supplied from the male connector. The source of power should always be supplied from the female connector.
• Use TURCK closure caps to protect connectors from damage or dirt when not connected.

Note: Consult NFPA 79 (Electrical Standard for Industrial Machinery) for required over current protection of conductors and other selection and installation guidelines for industrial machine applications.

Cable Options

TURCK offers multiple cable options for the powerfast products. The majority of TURCK’s powerfast products use cables that carry a tray rated, exposed run (TC-ER) approval. Select TURCK powerfast products may carry an additional STOOW cable approval, although versions that carry the STOOW and TC-ER approval are also available as TC-ER only.

Both the STOOW/TC-ER cable and the TC-ER only cable version are premium cable offerings, however, the TC-ER only version has a slightly reduced cable outer diameter. This feature offers more flexibility and is a more cost effective solution. This cable option can be designated by adding a “/S4000” to the end of the part description where applicable.

Estimated hp ratings for D-Size powerfast

(Based on 85% motor efficiency and 90% power factor.)
SinglePhase (2 Current Carrying Conductors)
Pin Count AWG Current(amps) Voltage(volts) Power(hp)
3-pin 10 AWG 30 230 7
460 14
575 17
12 AWG 25 230 5
460 11
575 14
14 AWG 18 230 4
460 8
575 10
Three Phase (3 Current Carrying Conductors)
Pin Count AWG Current(amps) Voltage(volts) Power(hp)
4-pin 10 AWG 25 230 10
460 20
575 25
12 AWG 20 230 8
460 16
575 20
14 AWG 15 230 6
460 12
575 15
Note: These tables are theoretical values and are for reference only. Values will vary based on load conditions, as well as condition, age and type of motor. Please consult a qualified electrician for specific product sizing requirements. Current limits for conductor gauge size taken from NFPA 79 2007 edition.