Over Current & Over Load

They are often used interchangeably, but technically in an electrical circuit, only Over Current is a true electrical term. Over LOAD would be more of a mechanical term, but electrically we can measure it in motors by looking at Over CURRENT, because a motor will draw as much current as it can to try to maintain speed under a load. There are devices that determine true load by using several sensor systems to calculate kW, which is technically a way of determining Load, but still, that is an electrical measurement of a mechanical issue.

Over Current is more generic term. It is categorized as Overload Current and Short Circuit Current.

Over Load Current: The term overload is applicable mostly for motor loads. It is generally the current when motor is overloaded by some reason. Overload can be sustained for certain period of time. There should be separate overload protection in this case.

Short Circuit Current: It is due to the fault (line to line, line to ground) in the circuit and applies to all type of circuit. The circuit should be isolated immediately. Motor starter should have short circuit current protection in addition to overload current protection.

Hope it helps.

- MS

Thank You

there is not any signification difference between over curren and over load

whene load is more it means over load is there at that time machine or instrument will draw more current so ovr current will occure whene over load is there.