TURN OFF POWER - Make sure to TURN OFF POWER to your pump before opening up the electrical end of the pump. You will probably be working with 240V so be careful. If you are not familiar with electricity, have an electrician help you. Turn off the power at the circuit breaker to the pump for maximum protection.
ENCIRCLE ONE POWER WIRE - Position one line lead (L1 or L2) so that the jaws of the ammeter encircle one power lead. This picture shows the clamp around the red supply line, L1. Do not place the ammeter around both wires. They will cancel each other out. It may be necessary to install a test loop to have room for the meter jaws.
COMPARE READING AGAINST MAX AMPERAGE - The maximum load amps is shown on the motor nameplate. The picture shows an allowable amperage of up to 7.3 amps with 230V. The recording reading of 6.33 is below the max allowable amperage. Note: Amps shows are 14.6/7.3. This motor can be configured for either 115V or 230V depending on your supply voltage. 14.6 is the allowable amperage for 115V. 7.3 is the allowable amperage for 230V.
ANALYZE ISSUES - If the amps are higher than the maximum limits, you have an overloaded condition. Check voltage. If the voltage is low, the amperage will be increased to compensate for the low voltage. Check for obstructions in the motor like a worn impeller that is rubbing against the diffuser or debris wedged in between the impeller and diffuser. Note: If you have a clogged impeller, this will reduce water flow but it will not increase amperage unless the clogged debris is rubbing against the wall of the motor. Work performed by the motor is directly related to the volume of water it must move and the length of pipe it must move it. Reduced water flow caused by a clog means less water moved and therefore less work of the motor. In effect the impeller clog offloads the motor. One other thing to checko is a possible short in the motor.