Cutting in Bells Three Phase

Cutting in Bells Three Phase
© 2018 Iowa Association of Electric Cooperatives

Why are we doing this energized?
Take some time to decide if it is necessary to do this job energized. Could the job be done de-energized and grounded? What would be the impact? Would it be safer? © 2018 Iowa Association of Electric Cooperatives

OSHA Required Tailgate Discussion Topics
Hazards Associate with the job Work Procedures Involved Special Precautions Energy Source Controls PPE Required The five topics required by OSHA to discuss in the tailgate. First letter from each topic = How Well Should Everyone Plan © 2018 Iowa Association of Electric Cooperatives

Work Procedures Involved Hazards associated with the job
Special Precautions Energy Source Controls Personal Protective Equipment Be sure to record your emergency location and post in a location everyone on the crew knows. Have your PPE and First Aid kit available Be sure your AED is accessible. A safe job begins with a thorough inspection of… Tools Be certain all of your tools are in good shape. Equipment Make sure your trucks are all in working order take time to preflight your equipment and insure there are no surprise. Line/Structure Look over the line and structure. Are there any potential hazards? (Broken insulators, damaged wire, clearances over roads or from trees?) Be aware of your work area, be sure to cover anything you can reach touch or fall into. And anything that can reach touch or fall into you! Discuss all PPE needed for the job and wear your PPE. Be sure to inspect your equipment prior to use. Identify all voltages you are exposed to. Be sure to have all of your Arc-Flash protective gear on. Identify a dedicated observer Working in traffic exposes you to hazards that are difficult to control. Give the vehicles plenty of time to see and avoid you! Follow the manual of traffic control for your area. Slips trips and falls are some of the most common injuries, look for hazards that could cause this. Be sure to inspect and wear your fall arrest harness. Here are the five topics again with signs and bubbles to jump start tailgate discussion!! Click on the icon to bring up a text box. Click on the icon again to make the text box go away Gets the crew involved. Gives the feeling of knowing it is ok to ask questions, give suggestions, see something, say something! The next slides will get directly into the task at hand. Visual, written and audio will all be used here! There are suggestions in the notes as to what to discuss. This will get the Team involved, creating communication channels to open! © 2018 Iowa Association of Electric Cooperatives

Be sure you have completed the JSA and have all of the equipment needed to begin.
Position about ten feet from a structure. This will help to prevent some conductor motion. It will also allow us to lower the neutral for additional clearance. © 2018 Iowa Association of Electric Cooperatives

Bond your truck to the system neutral.

Lower the neutral to provide additional electrical clearance while working.

Cover the neutral to provide additional protection
Cover the neutral to provide additional protection. Be careful not to bounce the conductor to much. This could cause the phase and the neutral to come in contact with each other resulting in an arc and possible burn down of the line. © 2018 Iowa Association of Electric Cooperatives

Cover the phase closest to you.

Move to cover the center phase
Move to cover the center phase. Be certain the phase behind you is covered and there is nothing protruding from the conductor that is not covered. Remember anything you can reach, touch or fall into must be covered. © 2018 Iowa Association of Electric Cooperatives

Move toward the far phase conductor
Move toward the far phase conductor. Install your conductor grips, strap hoist, and insulating link. © 2018 Iowa Association of Electric Cooperatives

Install your insulated mechanical jumper
Install your insulated mechanical jumper. Be careful to control the ends. © 2018 Iowa Association of Electric Cooperatives

Install a support for the long end of the jumper
Install a support for the long end of the jumper. Failing to do this could result in the jumper falling or twisting when the line is cut. It could make contact with you, or fall into the neutral bellow. This is another reason we have covered the neutral bellow. © 2018 Iowa Association of Electric Cooperatives

Cut the conductor and bend the tails back
Cut the conductor and bend the tails back. Be certain they are controlled and there is no way they can come into contact with each other. © 2018 Iowa Association of Electric Cooperatives

Install a jumper holding tool on the side to be disconnected.

Move back to the center phase
Move back to the center phase. Work with the covered phase to your back, not between the far phase and the center. Uncover the center phase. © 2018 Iowa Association of Electric Cooperatives

Install your conductor grips, strap hoist, and insulating link.

Move out and uncover the outside phase
Move out and uncover the outside phase. Work from the outside, not between the phases. © 2018 Iowa Association of Electric Cooperatives

Install your conductor grips, strap hoist, and insulating link.

Using a hot stick, disconnect the jumper and move this end to the jumper holder.

Clamp the jumper end to the jumper holding standoff.

Leave the jumper in this position until you can test the line to insure it is de-energized.

Clamp the jumper end to the jumper holding standoff

Clamp the jumper end to the jumper holding standoff.

Use your hot stick to move the neutral coverup to allow you to move the hot jumper down.
If the neutral is hanging to low for the jumpers to reach you may need to raise the neutral to a higher position and support it on the pole so they can. © 2018 Iowa Association of Electric Cooperatives

With a hot stick loosen the clamp connected to the conductor

With a hot stick move the jumper end to the neutral.

Move to the center phase.

With a hot stick loosen the clamp connected to the conductor.

With a hot stick loosen the clamp connected to the conductor

Test your voltage detection device to confirm safe operation.

Use an approved testing device to determine if the line is de-energized. One phase at a time. It is best practice to test the hot side first, then the de-energized side, and then the hot side again. © 2018 Iowa Association of Electric Cooperatives

Move down and remove the neutral coverup.

The line is now ready for you to perform your work.

To put things back to normal you will reverse the procedure
To put things back to normal you will reverse the procedure. Begin by bonding your truck. © 2018 Iowa Association of Electric Cooperatives

Install neutral coverup.

With a hot stick move one phase conductor clamp to the jumper holder standoff.

Leave this jumper on the standoff until all three phases are moved to this position.

With a hot stick move the center phase conductor clamp to the jumper holder standoff.

Leave this jumper on the standoff until all three phases are moved to this position.

With a hot stick move the phase conductor clamp to the jumper holder standoff.

Leave this jumper on the standoff.

Visually inspect that all three phases are now ungrounded and all jumpers are secured.

With a hot stick, move the clamp from the neutral to the conductor
With a hot stick, move the clamp from the neutral to the conductor. One phase at a time. © 2018 Iowa Association of Electric Cooperatives

Be sure to keep clear of the jumper while doing this.

With a hot stick, move the clamp from the neutral to the center phase conductor.

Be sure to stay clear of the jumper.

With a hot stick, move the clamp from the neutral to the conductor.

Be sure to stay clear of the jumper.

Inspect the jumpers to insure they are not loose on the conductor.

Move the neutral coverup back into position.

Starting with the closest phase
Starting with the closest phase. With a hot stick move the jumper clamp from the standoff to the energized side. This will re-energize the line. © 2018 Iowa Association of Electric Cooperatives

Moving to the last phase
Moving to the last phase. With a hot stick move the jumper clamp from the standoff to the energized side. This will re-energize the line. © 2018 Iowa Association of Electric Cooperatives

All three phases are now energized again.

Remove the closet phases jumper holding tool.

Install a splice in the closest phases line
Install a splice in the closest phases line. Remember to take some conductor out for loss. Do the some for all conductors and the sag should be good. © 2018 Iowa Association of Electric Cooperatives

Remove the hoist, link stick, and grips.

Re-install the coverup on the nearest phase.

Move to center phase. Work with the covered closest phase to your back but not touching.

Install a splice in the center phase line
Install a splice in the center phase line. Remember to take some conductor out for loss. Do the some for all conductors and the sag should be good. © 2018 Iowa Association of Electric Cooperatives

Re-install the coverup on the center phase.

Move to the far phase. Remove the jumper holding tool.

Install a splice in the far phase line
Install a splice in the far phase line. Remember to take some conductor out for loss. Do the some for all conductors and the sag should be good. © 2018 Iowa Association of Electric Cooperatives

Working your way out. With the nearest phase to your back
Working your way out. With the nearest phase to your back. Remove the center phase coverup. © 2018 Iowa Association of Electric Cooperatives

From the outside. Reach forward and remove the outside phase coverup.

Remove the neutral coverup.

Raise the neutral back and re-tie it
Raise the neutral back and re-tie it. If needed re-connect the ground wire. © 2018 Iowa Association of Electric Cooperatives

Cutting in Bells Three Phase

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