Addition of a model to an existing approval requires submittal of Technical Modification. You need to perform the following steps:

1. Submit a completed Technical Modification application form (PC-ELEC-App.12). Original signature is required.
2. Submit the application fee as marked on the application form. Make check payable to “The Department of Building and Safety, City of Los Angeles.”
3. Submit a current production sample of the new equipment model. d. Provide a current new model product literature (brochure, operational instruction, maintenance manual, owner’s manual).
4. Photographs or drawings showing the exterior views and internal views of the new equipment.
5. Schematic wiring diagrams. Diagrams should identify the sizes of wires, ratings of fuses, circuit breakers, and other components.
6. The parts list for the components operating at or above 30 VAC or 24.8 VDC in dry locations or 15 VAC or 12.4 VDC in wet locations. Include the part's function, name of manufacturer, catalog number, electrical ratings, and testing agency component recognition or listing number.
7. For new model with unlisted transformers, drivers or power supplies with a rating of less than 1KVA, provide two samples with schematic wiring diagrams and specification sheets.