EVITP Infrastructure Planning and Development 3 — Questions and Answers
Question 1: Which NEC article primarily governs the installation of electric vehicle charging systems in commercial occupancies?
- Article 210
- Article 220
- Article 625 (Correct answer)
- Article 700
Correct answer: Article 625
NEC Article 625 covers electric vehicle charging systems, including equipment requirements and installation methods.
Question 2: A developer plans a 50-unit multifamily building with EV readiness. Which approach aligns with California's Title 24 EV-ready requirements?
- Install fully operational Level 2 chargers in 10% of spaces
- Provide conduit, wiring, and panel capacity for 10% of spaces as EV-ready (Correct answer)
- Install Level 1 outlets in all spaces
- No requirement applies to multifamily buildings under 100 units
Correct answer: Provide conduit, wiring, and panel capacity for 10% of spaces as EV-ready
California Title 24 requires EV-ready spaces—conduit, wiring, and panel capacity—for a percentage of multifamily parking stalls.
Question 3: When sizing a service panel for a new EVSE installation, NEC 625.42 requires continuous-load calculations at what percentage of the EVSE rated current?
- 80%
- 100%
- 110%
- 125% (Correct answer)
Correct answer: 125%
NEC 625.42 requires EVSE branch circuits to be rated at 125% of the continuous EV charging load for safety margin.
Question 4: A site survey reveals underground utilities crossing the planned trench route for EVSE conduit. What is the required first step before excavation?
- Obtain a building permit
- Call 811 (Call Before You Dig) for utility locates (Correct answer)
- Install temporary fencing around the area
- Consult the EV charger manufacturer
Correct answer: Call 811 (Call Before You Dig) for utility locates
Calling 811 before digging is federally mandated to locate buried utilities and prevent dangerous strikes.
Question 5: Which interconnection agreement is typically required when a site pairs EVSE with a behind-the-meter battery energy storage system that may export power?
- Standard service agreement
- Net Energy Metering (NEM) or export interconnection agreement (Correct answer)
- Demand response curtailment contract only
- No agreement needed for behind-the-meter storage
Correct answer: Net Energy Metering (NEM) or export interconnection agreement
Storage systems capable of exporting energy require a net metering or export interconnection agreement with the utility.
Question 6: For an EVSE project funded by a federal grant, which prevailing wage law typically applies to construction labor costs?
- Fair Labor Standards Act
- Davis-Bacon Act (Correct answer)
- National Labor Relations Act
- Walsh-Healey Public Contracts Act
Correct answer: Davis-Bacon Act
The Davis-Bacon Act requires that workers on federally funded construction projects receive locally prevailing wages.
Question 7: A property owner in a deed-restricted community wants to install a home EV charger. Which federal law limits the HOA's ability to prohibit this installation?
- Clean Air Act
- Energy Policy Act of 2005
- Many states have EV charging rights laws, and federal law does not directly override HOAs (Correct answer)
- Americans with Disabilities Act
Correct answer: Many states have EV charging rights laws, and federal law does not directly override HOAs
No single federal statute bars HOA prohibitions; instead, many states have enacted EV charging rights (right-to-charge) laws that limit HOA authority.
EVITP Infrastructure Planning and Development 3
Which NEC article primarily governs the installation of electric vehicle charging systems in commercial occupancies?