How can you find the amp rating of an overload heater?

Finding the amp rating of an overload heater can be done by reading the number clearly marked on the overload heater itself. Many overload heaters have their amp ratings printed directly on them, allowing for a quick and accurate reference without the need for additional tools or measurements. This method is efficient and ensures that you have the correct rating as intended by the manufacturer.

While consulting the manufacturer's manual is also a valid method to find this information, it may not be as straightforward as simply reading the number on the heater. The manual may provide additional details about the heater's operation, but referring directly to the component is generally more immediate and reliable.

Using a clamp meter to measure would involve interrupting the current flow, which isn't always practical or necessary just to find an amp rating, and inquiring with fellow technicians might lead to inconsistencies or misinformation, as it heavily relies on personal experience rather than definitive data. Reading directly from the overload heater provides the most direct and accurate information.