sandsnow
Senior Member
- Location
- Southern California
Here's the label from the correct XFMR for the application
Bonding to xo when not in use
- Thread starter james Graham
- Start date
- Status
sandsnow
Senior Member
- Location
- Southern California
I don't if they energized it. I wrote the corrx and when they called for re-inspection it was fixed.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
Larry
Thanks for the pics, they speak a thousand words.
Thanks for the pics, they speak a thousand words.
ramsy
NoFixNoPay Electric
- Location
- LA basin, CA
- Occupation
- Service Electrician 2020 NEC
I second that. Many thanks Larry.
- Location
- Massachusetts
Whats the problem?
'O' is neutral right? :wink: :lol:
'O' is neutral right? :wink: :lol:
x0 to ground
x0 to ground
I assume that your transformer is connected delta on the H1-H2-H3 windings and wye connected on the x1-x2-x3 windings. By definition the primary of the transformer is the source of supply side. In this case you have formed what is called a "Grounding Bank" by tying down the x0 or the wye tie you allow the currents of the 208/120V system to flow into the X0 bushing and be distributed by the delta windings on the high side.
Always float the X0 bushing in this cast. A wye-delta connection should be avoided in this case.
Don
x0 to ground
I assume that your transformer is connected delta on the H1-H2-H3 windings and wye connected on the x1-x2-x3 windings. By definition the primary of the transformer is the source of supply side. In this case you have formed what is called a "Grounding Bank" by tying down the x0 or the wye tie you allow the currents of the 208/120V system to flow into the X0 bushing and be distributed by the delta windings on the high side.
Always float the X0 bushing in this cast. A wye-delta connection should be avoided in this case.
Don
- Status