Incoming Cable Lacing Instructions—Line-Side Isolation Cable Vault

All cables must be laced and secured prior to installing the cable vault front cover.

DANGER

Hazard of Electric Shock, Explosion, or Arc Flash Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS-2011, or CSA Z462. Turn off all power supplying this equipment before working on or inside equipment. Always use a properly rated voltage sensing device to confirm power is off. Replace all devices, doors, and covers before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.

1. For lacing material, select a sisal or hemp rope with a minimum of 2500 pounds of pull strength (625 pounds working load). Apply tape to any frayed end of the rope before lacing cables.

2. Lace the cables from all phases together in one bundle with a continuous length of rope. The ArcBlok lug cover must be in place and bolted down prior to lacing (Figure ArcBlok Lug Cover in Place Prior to Lacing ). Make sure interphase barriers are inserted in the grooves of the ArcBlok lug cover.

   ArcBlok Lug Cover in Place Prior to Lacing

   

3. Lacing will require two sets of looping groups: an entry loop set and a second looping group nearer to the ArcBlok.

4. Attach one end of the rope to the cable bundle.

5. After attaching the rope to the cables, make a loop in the rope and pull the loop around the cable bundle from behind. Pull the loose end of the rope through the loop (First Cable Lacing Loop).

   First Cable Lacing Loop

   

6. Continue to pull the rope through the loop until the rope is tight. Continue to make a loop group of no more than two loops, wrapping the cable bundle four times.

7. Next, to create the second loop group, pull the rope around the cable bundle. Make a loop by pulling the loose end under the rope. Continue to pull the rope through the loop until it is tight around the cable bundle. Repeat the procedure until the cable bundle has no more than two loops, wrapping the cable bundle four times. The spacing between the upper and lower loop groups should be no less than 4 in. (102 mm) (Upper and Lower Cable Lacing Groups).

   Upper and Lower Cable Lacing Groups

   

8. Ensure the cable bundles do not disengage the interphase barriers from the grooves of the ArcBlok lug cover (ArcBlok Interphase Barriers and ArcBlok Interphase Barriers and Lug Cover Grooves).

   ArcBlok Interphase Barriers

   

9. After the entire cable bundle has been laced, tie the ends of the ropes securely to the looping groups, then cut and tape the ends to prevent fraying. Make sure the rope ends are not obstructing the cable vault front cover, overlapping seals, or rear panel damper.

   After the entire cable bundle has been laced, tie the ends of the ropes securely to the looping groups, then cut and tape the ends to prevent fraying. Make sure the rope ends are not obstructing the cable vault front cover, overlapping seals, or rear panel damper.

10. While keeping the ArcBlok lug cover in place, remove all cover hardware.

    NOTE: Make sure the interphase barriers remain inserted into the grooves of the ArcBlok lug cover (ArcBlok Interphase Barriers and Lug Cover Grooves).

    ArcBlok Interphase Barriers and Lug Cover Grooves

    

11. Place the cable vault front cover on top of the ArcBlok lug cover.

12. Install 3/8–16 Keps™ nuts and torque them to 20–23 lb-ft (27–31 N•m).