How to determine the model number of a power distribution box
Video: How to locate catalog number, series number, and date code on QO and Homeline load centers. On the outside Carton Label of the box, which is located at one of the ends of the carton. This guide will show you exactly how to determine your panel's age and spot the warning signs of a system that needs an upgrade. The alpha-numeric sequence is usually a stamp over the wiring diagram, as shown in the photo above. They are commonly used for concealed installation in Residential Suites or corridor walls. The purpose of this standard is to establish consistency in the naming of components in the electrical distribution system and to allow flexibility in obtaining maintenance history information.
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