Practice Test Geeks(EVITP) Electric Vehicle Infrastructure Program Practice Test
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Technology and Equipment Flashcards

7 cards from real EVITP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Technology and Equipment flashcards as text

  1. When installing multiple EVSE units on a shared electrical service, what is the purpose of a load management system (LMS)?

    Answer: Distribute available amperage among active chargers to prevent exceeding the service panel rating

    An LMS dynamically allocates available current across multiple EVSE units so the total demand never exceeds the site's electrical service limit.

  2. Which IEC standard classifies the modes of charging for electric vehicles worldwide?

    Answer: IEC 61851-1

    IEC 61851-1 defines the four modes of EV charging (Mode 1 through Mode 4) along with general requirements for conductive charging systems.

  3. What does 'galvanic isolation' between the AC input and DC output of a charger provide?

    Answer: Electrical separation that prevents DC fault current from flowing back onto the AC grid

    Galvanic isolation, typically achieved with a transformer in the power stage, prevents DC ground faults on the vehicle side from propagating to the AC supply side.

  4. A fleet operator wants to monitor energy consumption per vehicle per session at multiple charging sites. Which EVSE feature is required to enable accurate billing and reporting?

    Answer: Revenue-grade (NTEP-certified) energy metering integrated in the EVSE

    Revenue-grade (NTEP-certified) metering within the EVSE ensures that energy measurements are legally defensible and accurate enough for billing and reimbursement purposes.

  5. What is the role of the 'proximity pilot' (PP) pin in a Type 2 (IEC 62196-2) or SAE J1772 connector?

    Answer: Detect when the connector is fully inserted and signal the vehicle's onboard charger to lock the inlet

    The proximity pilot pin detects connector insertion and, together with a resistor in the plug, signals the vehicle to prevent drive-away while charging and to lock the inlet latch.

  6. Which type of surge protective device (SPD) category is recommended for installation at the EVSE panel to protect against lightning-induced transients on the AC feed?

    Answer: Type 2 SPD installed at the distribution panel feeding the EVSE

    A Type 2 SPD at the distribution panel protects downstream equipment including EVSE from transient overvoltages that pass through or originate beyond the service entrance.

  7. What does an EVSE 'de-rating' event indicate, and what typically triggers it?

    Answer: The charger is reducing its output power, usually due to high internal temperature or grid demand response signal

    De-rating occurs when the EVSE reduces output power below its rated maximum, most commonly triggered by thermal protection of internal components or an external demand response command.