1. Wye/Delta 240/480 4 wire Transformer Bank

2. 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

3. 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!

4. Hang the required hardware
Note the side that has two cutouts is opposite the system neutral.

5. Remove the transformer tank straps from all but the lighting transformer.
Ground all of the transformer cases as well as the transformer cluster.

6. Connect the primary jumpers
Connect the primary jumpers. Leaving the high side jumpers connected to the system neutral until the entire connection is completed. H1 H2

7. Connect the H2 bushings together but leave them floated/ungrounded.

8. Complete the secondary connections as diagramed.
Don’t connect the primary jumpers or close the cutouts until you have completed the connections.
Center transformer connected as the grounded transformer X1
Neutral
power
power
Wild Leg

9. Complete the secondary connections as diagramed.
Right transformer connected as the lighting transformer
Neutral
Wild leg
power
power

10. Complete the secondary connections as diagramed.
Left transformer connected as the lighting transformer
Neutral
power
Wild Leg
power

11. To prevent the surge in voltage during energizing, Temporarily ground the primary Wye point during energizing. X1
Neutral
power
power
Wild Leg

12. To prevent the surge in voltage during energizing, Temporarily ground the primary Wye point during energizing. A fourth cutout can be added to assist in this for switching. X1
Neutral
power
power
Wild Leg