Ac Blower Motor With Black Wires Numbered 1 2 3
Electric Motor Wire Marking & Connections
For specific Leeson Motor Connections go to their website and input the Leeson catalog # in the "review" box, you will find connection data, dimensions, name plate data, etc. www.leeson.com
Single Phase Connections:(Three Phase--see below)
Single Voltage:
| Rotation | L1 | L2 |
| CCW | 1,8 | 4,5 |
| CW | 1,5 | 4,8 |
Dual Voltage: (Main Winding Only)
| Voltage | Rotation | L1 | L2 | Join |
| High | CCW | 1 | 4,5 | 2&3&8 |
| CW | 1 | 4,8 | 2&3&5 | |
| Low | CCW | 1,3,8 | 2,4,5 | ------- |
| CW | 1,3,5 | 2,4,8 | ------- |
Dual Voltage: (Main & Auxiliary Winding)
| Voltage | Rotation | L1 | L2 | Join |
| High | CCW | 1,8 | 4,5 | 2&3,6&7 |
| CW | 1,5 | 4,8 | 2&3,6&7 | |
| Low | CCW | 1,3,6,8 | 2,4,5,7 | --------- |
| CW | 1,3,5,7 | 2,4,6,8 | --------- |
Single Phase Terminal Markings Identified By Color:(NEMA Standards)
1-Blue 5-Black P1-No color assigned
2-White 6-No color assigned P2-Brown
3-Orange 7-No color assigned
4-Yellow 8-Red
ThreePhaseConnections:
Part Winding Start:
6 Leads NEMA Nomenclature:
WYE or Delta Connected
| T1 | T2 | T3 | T7 | T8 | T9 | |
| Motor Leads | 1 | 2 | 3 | 7 | 8 | 9 |
9 Leads NEMA Nomenclature
WYE Connected (low voltage only)
| T1 | T2 | T3 | T7 | T8 | T9 | Together | |
| Motor Leads | 1 | 2 | 3 | 7 | 8 | 9 | 4&5&6 |
12 Leads NEMA & IEC Nomenclature
Single Voltage or Low Voltage of Dual-Voltage Motors
| T1 | T2 | T3 | T7 | T8 | T9 | |
| NEMA | 1,6 | 2,4 | 3,5 | 7,12 | 8,10 | 9,11 |
| IEC | 1 | 2 | 3 | 7 | 8 | 9 |
Three Phase Motors-Single Speed
Nema Nomenclature--6 Leads: Single Voltage--External WYE Connection
| L1 | L2 | L3 | Join |
| 1 | 2 | 3 | 4&5&6 |
Single Voltage--External Delta Connection
Single Voltage WYE-Delta Connections
| Operating mode | Connection | L1 | L2 | L3 | Join |
|---|---|---|---|---|---|
| Start | WYE | 1 | 2 | 3 | 4&5&6 |
| Run | Delta | 1,6 | 2,4 | 3,5 | ------- |
Dual Voltage WYE-Delta Connections
| Voltage | Connection | L1 | L2 | L3 | Join |
|---|---|---|---|---|---|
| High | WYE | 1 | 2 | 3 | 4&5&6 |
| Low | Delta | 1,6 | 2,4 | 3,5 | ------- |
NEMA Nomenclature--9 Leads:
Dual Voltage WYE-Connected
| Voltage | L1 | L2 | L3 | Join |
| High | 1 | 2 | 3 | 4&7, 5&8, 6&9 |
| Low | 1,7 | 2,8 | 3,9 | 4&5&6 |
Dual Voltage Delta-Connected
| Voltage | L1 | L2 | L3 | Join |
| High | 1 | 2 | 3 | 4&7, 5&8,6&9 |
| Low | 1,6,7 | 2,4,8 | 3,5,9 | ------------ |
NEMA Nomenclature--12 Leads:
Dual Voltage--External WYE Connection
| Voltage | L1 | L2 | L3 | Join |
| High | 1 | 2 | 3 | 4&7, 5&8, 6&9, 10&11&12 |
| Low | 1,7 | 2,8 | 3,9 | 4&5&6, 10&11&12 |
Dual Voltage
WYE-Connected Start
Delta-Connected Run
| Voltage | Conn. | L1 | L2 | L3 | Join |
| High | WYE | 1 | 2 | 3 | 4&7, 5&8, 6&9, 10&11&12 |
| Delta | 1,12 | 2,10 | 3,11 | 4&7, 5&8, 6&9 | |
| Low | WYE | 1,7 | 2,8 | 3,9 | 4&5&6, 10&11&12 |
| Delta | 1,6,7,12 | 2,4,8,10 | 3,5,9,11 | ------------ |
IEC Nomenclature--6 & 12 Leads:
Single Voltage WYE-Delta Connections Single Voltage WYE-Delta Connections
| oper- mode | Conn. | L1 | L2 | L3 | Join |
| Start | WYE | U1 | V1 | W1 | U2&V2&W2 |
| Run | Delta | U1,W2 | V1,U2 | W1,V2 | -------------- |
Dual Voltage WYE-Delta Connections
| Volt | Conn. | L1 | L2 | L3 | Join |
| High | WYE | U 1 | V1 | W1 | U2&V2&W2 |
| Low | Delta | U1,W2 | V1,U2 | W1,V2 | -------------- |
Dual Voltage WYE-Connected Start
Delta-Connected Run
| Volt | Conn. | L1 | L2 | L3 | Join |
| High | WYE | U 1 | V1 | W1 | U2&U5,V2&V5, W2&W5,U6&V6&W6 |
| Delta | U1,W6 | V1,U6 | W1,V6 | U2&U5,V2&V5, W2&W5 | |
| LOW | WYE | U1,U5 | V1,V5 | W1,W5 | U2&V2&W2, U6&V6&W6 |
| Delta | U1,U5, W2,W6 | V1,V5 U2,U6 | W1,W5 V2,V6 | ----------------------------- |
NEMA Nomenclature--6 Leads:
Constant Torque Connection (Low-speed HP is half of high-speed HP)
| Speed | L1 | L2 | L3 | Typical Connection | |
| High | 6 | 4 | 5 | 1&2&3Join | 2 WYE |
| Low | 1 | 2 | 3 | 4-5-6 Open | 1 Delta |
Variable Torque Connection (Low-speed HP is 1/4 of high-speed HP)
| Speed | L1 | L2 | L3 | Typical Connection | |
| High | 6 | 4 | 5 | 1&2&3Join | 2 WYE |
| Low | 1 | 2 | 3 | 4-5-6 Open | 1 WYE |
Constant Horsepower Connection (HP is the same at both speeds)
| Speed | L1 | L2 | L3 | Typical Connection | |
| High | 6 | 4 | 5 | 1-2-3 Open | 1 Delta |
| Low | 1 | 2 | 3 | 4&5&6-Join | 2 WYE |
IEC Nomenclature--6 Leads:
Constant Torque Connection
| Speed | L1 | L2 | L3 | Typical Connection | |
| High | 2W | 2U | 2V | 1U&1V&1W--JOIN | 2 WYE |
| Low | 1U | 1V | 1W | 2U-2V-2W OPEN | 1 Delta |
Variable Torque Connection
| Speed | L1 | L2 | L3 | Typical Connection | |
| High | 2W | 2U | 2V | 1U&1V&1W--JOIN | 2 WYE |
| Low | 1U | 1V | 1W | 2U-2V-2W OPEN | 1 WYE |
Ac Blower Motor With Black Wires Numbered 1 2 3
Source: https://electricmotorwarehouse.com/motor-connection-diagrams/