Wilton 4210 manual Wiring Data, Single phase electrical hook-up, Circuit protection

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Wiring Data

Single phase electrical hook-up

When connecting your machine to single phase power you may be connecting to either 115 or 230 volts, depending upon the motor type provided. Local codes may, or may not, permit the use of a plug type of connection for your machine. Where a plug connection is permitted, the following installation practices must be followed:

1.The plug used must be a grounding type of plug. On a 115 volt single phase connection, the plug must be a three-prong plug with two flat, parallel blades for the power wires and a single rounded or U-shaped prong for the ground connection.

On 230 volt single phase connections, the lug must be a three prong plug with two flat blades in tandem to carry the current, and a third round or U-shaped prong for the ground connection.

2.The service branch to which the plug is connected must be a branch with a separate ground wire so the grounding prong of the plug can be con- nected to ground effectively.

Figure 10: Pictoral diagram for single phase motor, 115 volts w/plug.

Figure 11: Pictoral diagram for 3-phase motor.

Note: Local electrical codes in many jurisdictions do not allow the use of plug type connections for single phase power when the machine is used in a commer- cial or industrial establishment.

In these cases you must connect your machine to the service branch using a hard-wired junction box connection.

All Wilton sanders are shipped with the power cable terminating without a plug on the assumption the machine will be hard-wired to its service branch.

Circuit protection

Where the service branch is protected with a fuse or circuit breaker which is too high a value to offer protection to the motor supplied, a fuse or circuit breaker box should be used at the point where the machine connection is made and the time delay fuse or circuit breaker should be a value just slightly higher than the maximum load current draw as specified on the motor plate on the motor.

Correcting motor rotation in single phase motors

Wilton provides single phase motors in both 115 volt and 230 volt configuration. Several motor manufac- tures may be used by Wilton for motors of this type.

These motors may, or may not, rotate in the correct direction -- counter-clockwise-- when connected to your single phase power source. If, after connec- tion, the motor runs in the correct counter-clockwise direction, the power connection is successful.

CAUTION: IF THE MOTOR RUNS CLOCKWISE WHEN CONNECTED TO YOUR SINGLE PHASE POWER SOURCE, YOU MUST DISCONNECT THE POWER SOURCE, OPEN THE JUNCTION BOX AND FIND THE CORRECT WIRING CONNECTIONS FOR THE MOTOR, OR LOCATE THE WIRING CONNECTIONS REQUIRED ON THE MOTOR PLATE ON THE OUTSIDE OF THE MOTOR.

Different manufacturers provide different wiring configurations for correcting the rotation of the motor armature. Therefore, no wiring diagrams for these motors are provided in this manual. Always consult the motor plate and/or the wiring diagram inside the junction box if rotation direction is not correct.