"Running Overload Units:"
"Running Overload Units:"
Running Overload Units
| Kind of Motor | Supply System | Number
& Location of Over-load Units, such as trip coils or relay |
| 1 - Phase AC or DC | 2-wire, 1-phase
ac or dc, ungrounded |
1 in either conductor |
| 1 - Phase AC or DC | 2-wire, 1-phase
ac or dc, grounded neutral |
1 in ungrounded conductor |
| 1 - Phase AC or DC | 3-wire, 1-phase
ac or dc, grounded neutral |
1 in either ungrounded conductor |
| 1 - Phase AC | any 3-phase | 1 in ungrounded conductor |
| 2 - Phase AC | 3-wire, 2-phase
ac, ungrounded |
2, one in each phase |
| 2 - Phase AC | 3-wire, 2-phase
ac, one conductor grounded |
2 ungrounded conductors |
| 2 - Phase AC | 4-wire,2-phase
ac, grounded or ungrounded |
2, one per phase
in ungrounded conductors |
| 2 - Phase AC | 5-wire, 2 phase
ac, grounded neutral or ungrounded |
2, one per phase
in any ungrounded phase wire |
| 3 - Phase AC | any 3-phase | 3, one each phase * |
* Exception: Where protected by other approved means.
If there is anything you would like to add or if you have any comments please feel free to email E.T.E. at http://www.elec-toolbox.com/email.htm
