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Learn EVSE field triage

Free primers for new techs and a fast map for experienced ones. Every page ends in a field action and links into free guides and fault samples—not consumer EV lifestyle content.

Start lesson 01 — EVSE levels and how tickets presentSkip to OCPP Faulted triage →

  1. 01EVSE levels and how tickets present

    ~8 min · Open →

    AC L2 vs DCFC vs depot stack — what the first five minutes of a ticket should tell you.

  2. 02Reading OCPP StatusNotification

    ~10 min · Open →

    Faulted, Unavailable, SuspendedEVSE — extract errorCode and vendor strings without drowning in the CSMS.

  3. 03CCS session stages in the field

    ~10 min · Open →

    SLAC → SDP → CableCheck → PreCharge → CurrentDemand mapped to what you see on the gun and HMI.

  4. 04Safety and LOTO boundary for EVSE techs

    ~8 min · Open →

    What you own, what the electrician owns, and what you never defeat on a live site.

  5. 05Site power vs charger fault

    ~9 min · Open →

    When undervoltage, phase loss, and LMS caps wear an EVSE mask — and how to prove it.

  6. 06How to use The EVSE Directory

    ~6 min · Open →

    Search, brands, free samples, guides, and when Solo unlocks the full corpus.

On a live ticket instead? Field Help FAQ · Protocol guides · Fault database

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