One possible cause for an overload to trip consistently is that the trip setting is incorrect or the incorrect heater size is being used. True or False?

The statement that one possible cause for an overload to trip consistently is that the trip setting is incorrect or the incorrect heater size is being used is indeed true. Overload relays are designed to protect electric motors from overheating due to excessive current. If the trip settings are inaccurately set, or if the heater elements in the overload relay are not suited for the specific motor's current ratings, they can trigger nuisance tripping.

Using an incorrect heater size can lead to improper protection. For example, if the heater element is too small for the motor's rated current, it may trip frequently, not allowing the motor to operate effectively. Conversely, if the setting is too high, the relay may fail to provide adequate protection when an actual overload occurs.

Thus, ensuring that both the trip settings and the heater sizes are appropriately matched to the motor's specifications is crucial for reliable operation and avoiding continuous tripping of the overload protection. This understanding reinforces the importance of proper configuration during the installation of motor control systems to maintain efficient operation and prolong the life of both the motor and the control equipment.