Metal sheathed cable with jacketed, cabled conductor subassembly

• US 10,002,689 B2
• Filed: 03/31/2015
• Issued: 06/19/2018
• Est. Priority Date: 01/07/2015
• Status: Active Grant

• Current Assignee: AFC Cable Systems Incorporated (Atkore, Inc.)
• Original Assignee: AFC Cable Systems Incorporated (Atkore, Inc.)
• Inventors: Straniero, George Anthony, Picard, Paul R., Ricci, Richard A., Lafreniere, Peter
• Primary Examiner(s): Sawyer, Steven T
• Application Number:
  US14/674,095
• Publication Number:
  US 20160196899A1
• Time in Patent Office: 1,176 Days
• CPC Class Codes: H01B 13/22 Sheathing; Armouring; Screening; Applying other protective layers H01B13/32 takes precedence
• CPC Class Codes: H01B 7/0225 Three or more layers
• CPC Class Codes: H01B 7/18 Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
• CPC Class Codes: H01B 9/003 including electrical control or communication wires
• CPC Class Codes: H01B 9/02 with screens or conductive layers, e.g. for avoiding large potential gradients
• CPC Class Codes: H01B 9/028 with screen grounding means, e.g. drain wires

Abstract

A Metal-Clad (MC) cable assembly includes a core having a plurality of power conductors cabled with a subassembly, each of the plurality of power conductors and the subassembly including an electrical conductor, a layer of insulation, and a jacket layer. The MC cable assembly further includes an assembly jacket layer disposed over the subassembly, and a metal sheath disposed over the core. In one approach, the subassembly is a cabled set of conductors (e.g., twisted pair) operating as class 2 or class 3 circuit conductors in accordance with Article 725 of the National Electrical Code®. In another approach, the MC cable assembly includes a protective layer disposed around the jacket layer of one or more of the plurality of power conductors and the subassembly. In yet another approach, a bonding/grounding conductor is cabled with the plurality of power conductors and the subassembly.

Claims

1. A metal clad cable assembly, comprising:

a core comprising a plurality of power conductors and a subassembly, each of the plurality of power conductors and the subassembly including an electrical conductor, a layer of insulation, and a jacket layer;

an assembly jacket layer disposed only over the subassembly, wherein the jacket layer of each of the plurality of power conductors is provided directly adjacent the assembly jacket layer, and wherein the assembly jacket layer is an extruded assembly jacket layer;

an assembly tape disposed around the core;

a metal sheath disposed around the assembly tape; and

a bonding/grounding conductor disposed between the assembly tape and the metal sheath.

2. The metal clad cable assembly of claim 1, wherein the subassembly comprises a cabled set of conductors.

3. The metal clad cable assembly of claim 2, wherein each of the cabled set of conductors is configured to conduct a voltage between zero (0) and approximately 300 Volts.

4. The metal clad cable assembly of claim 2, wherein each of the cabled set of conductors has a size between 24 American Wire Gauge (AWG) and 6 AWG, and wherein each of the plurality of power conductors has a size between 18 AWG and 2000 KCM.

5. The metal clad cable assembly of claim 1, wherein the bonding/grounding conductor is cabled with the plurality of power conductors and the subassembly.

6. The metal clad cable of claim 1, further comprising a core jacket layer disposed around the core.

7. The metal clad cable assembly of claim 1, wherein the plurality of power conductors and the subassembly are cabled together.

8. The metal clad cable assembly of claim 1, further comprising a protective layer disposed over the jacket layer of one or more of the plurality of power conductors and the subassembly.

9. A metal clad cable assembly, comprising:

a core including a plurality of power conductors cabled with a subassembly, each of the plurality of power conductors and the subassembly including an electrical conductor, a layer of insulation, and a jacket layer;

an assembly jacket layer disposed only over the subassembly, wherein the jacket layer of each of the plurality of power conductors is provided directly adjacent the assembly jacket layer, and wherein the assembly jacket layer is an extruded assembly jacket layer;

an assembly tape disposed around the core;

a metal sheath disposed around the assembly tape; and

a bonding/grounding conductor disposed between the assembly tape and the metal sheath.

10. The metal clad cable assembly of claim 9, where the subassembly comprises a cabled set of conductors.

11. The metal clad cable assembly of claim 10, wherein each of the cabled set of conductors has a size between 24 American Wire Gauge (AWG) and 6 AWG, and wherein each of the plurality of power conductors has a size between 18 AWG and 2000 KCM.

12. The metal clad cable assembly of claim 9, further comprising a protective layer disposed over one or more of the plurality of power conductors and the subassembly.

13. A method of making a metal clad cable assembly, comprising:

providing a core including a plurality of power conductors cabled with a subassembly, each of the plurality of power conductors and the subassembly including an electrical conductor, a layer of insulation, and a jacket layer;

disposing an assembly jacket layer only over the subassembly, wherein the jacket layer of each of the plurality of power conductors is provided directly adjacent the assembly jacket layer, and wherein the assembly jacket layer is an extruded assembly jacket layer;

disposing an assembly tape around the core; and

disposing a metal sheath over the core, wherein a bonding/grounding conductor is provided between the assembly tape and the metal sheath.

14. The method of claim 13, wherein providing the core comprises cabling together a set of conductors of the subassembly.

15. The method of claim 13, further comprising disposing a protective layer over the jacket layer of one or more of the plurality of power conductors and the subassembly.

16. The method of claim 13, further comprising cabling a bonding/grounding conductor with the plurality of power conductors and the subassembly.

17. A metal clad cable assembly, comprising:

a core comprising a plurality of power conductors and a subassembly of conductors, each of the plurality of power conductors and the subassembly including an electrical conductor, a layer of insulation surrounding the electrical conductor, and a jacket layer surrounding the layer of insulation;

an assembly jacket layer disposed between the subassembly and one or more of the plurality of power conductors, wherein the jacket layer of at least one conductor of the subassembly is provided directly adjacent the assembly jacket layer, wherein the jacket layer of each of the plurality of power conductors is provided directly adjacent the assembly jacket layer, and wherein the assembly jacket layer is an extruded assembly jacket layer;

an assembly tape disposed around the core;

a metal sheath disposed around the assembly tape; and

a bonding/grounding conductor disposed between the assembly tape and the metal sheath.