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TESLA, INC 3500 Deer Creek Rd, Palo Alto, CA 94304
Tesla Standard Photovoltaic Systems - Electrical Qualification Certification Letter
Tesla is offering standard solar photovoltaic(PV) systems to simplify the ordering and install
experience, lower costs, and make solar accessible to more Americans. All applicable electrical
code/requirements have been incorporated into the decision-making process for these
standardized offerings. The material selection and installation practice of these PV systems are
fixed. Product datasheets and UL listings provided are exclusively used for this standardized PV
product and provide information on PV module and PV inverter used. The repeatability of this
standardized product offering ensures compliance with the NEC. Please refer to the design
documentation with all the code compliant wiring options that can be utilized.
Prior to commencement of installation, Tesla’s Electrician/Contractor shall verify existing service
conductor and electrical panel to be in suitable condition for interconnection, not exhibiting
previous arc or physical damage on insulation of service conductors and panel busbar which
may affect ampacity and its ability to establish proper connection between the PV inverter and
utility grid. The interconnection is performed ensuring that any one of the methods discussed in
NEC section 705.12 is followed.
The system can be interconnected to the utility grid in two ways:
1. Supply side connection as covered by NEC Section 230.82(6) and NEC Section
705.12(A), The sum of the ratings of all PV over-current protection device connected
shall not exceed the rating of the service.
2. Load side connection as covered by NEC article 705.12(D)(2). The section specifies
that interconnection is permitted, provided one of the methods of interconnection to
busbar are followed. Approved load side interconnection methods are listed in the
following:
- Feeder in accordance with NEC 705.12(D)(2)(1)
- Load side tap in accordance with NEC 705.12(D)(2)(2)
- Breaker tie-in on busbar in accordance with NEC 705.12(D)(2)(3)
I certify that installation of Tesla standard photovoltaic (PV) systems with interconnection to an
electrical service meets the criteria outlined in NEC article 690, 705 and related articles in NEC
and is therefore permitted by code. The PV system design described in the design document,
when properly installed and maintained, meets the minimum recommended practices
established by the Florida Solar Energy Center(FSEC) certification and those requirements set
forth by the most recent edition of Florida Building code(FBC). This approval does not imply
endorsement or warranty of the module and inverter.
Chidanand Sekar, P.E.
Electrical Engineer, Tesla
csekar@tesla.com
Direct: 614 256 5685
Licensed in Florida