Change Summary

• A new section is being introduced to Article 406 at 406.13 pertaining to single-pole connectors.

Expert Analysis

A “Single-Pole Separable Connector” is defined as “a device that is installed at the ends of portable, flexible, single conductor cable that is used to establish connection or disconnection between two cables or one cable and a single- pole, panel-mounted separable connector”. This new section covers the listing and labeling of single-pole separable connectors. Further provisions will address the type of singlepole separable-connector used as either the locking or latching type and marking requirements with the manufacturer’s name or identification and voltage and ampere ratings. Proper identification of the grounded circuit conductor (white-colored housing) and connectors designated for connection to the equipment grounding conductor shall be identified by a green-colored housing. Interchangeability for ac or dc use or for different current ratings or voltages are addressed as well. The new text will also identify the proper connection and disconnection sequence necessary for the safe use of these devices. It is becoming a common industry practice to provide paralleled inputs of single-pole separable connectors on equipment so that paralleled sets of single conductor feeders may be used for powering high current equipment. In addition, it is common to find multiple power systems, originating from multiple power sources present at a location.

Leviton Solution
Leviton offers a full line of single pole devices including the highly durable Rhino-Hide® product assortment. The Rhino-Hide® family of connectors are designed for use in the most rugged environments. From single pole connectors used for high amperage power distribution to more traditional NEMA configured wiring applications, you’ll find a Rhino-Hide® connection device suitable for your needs. Rhino-Hide® 49 Series Male and Female Connectors and Panel Receptacles are engineered to exceptional standards for high-amperage power delivery in applications like land-based and offshore oil and gas rigs. Rhino-Hide® single pole connectors and receptacles are designed to deliver up to 1,000 Volts AC or DC and up to 1,135 Amps of continuous power under the most extreme conditions with cables ranging in size from 313 MCM to 777 MCM. Designed to mate with other manufacturers’ high-amperage single pole connectors and receptacles, Rhino-Hide® single pole devices can be installed on both existing silicon controlled rectifiers (SCR’s) and generator stations or on new oil and gas rig construction.