Meters & Measurements (Topic 4) in Module 2 – Solar-PV-NABCEP-Associate (BG)

Meters & Measurements

PV technicians commonly use: - Multimeters (voltage, current, resistance/continuity) - Clamp meters (measure current without opening a conductor)

Key safety ideas

  • Verify meter function and settings (AC/DC, volts/amps).
  • Use proper test leads and probe technique.
  • If you must measure current in series, understand that the meter becomes part of the circuit.

Common PV measurements

  • Open-circuit voltage (Voc)
  • String current (Isc, or operating current)
  • Continuity checks (as appropriate and only when de-energized)
Topic

Meters & Measurements

Basic meter safety and what to measure in PV systems

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Meters & Measurements

PV technicians commonly use: - Multimeters (voltage, current, resistance/continuity) - Clamp meters (measure current without opening a conductor)

Key safety ideas

  • Verify meter function and settings (AC/DC, volts/amps).
  • Use proper test leads and probe technique.
  • If you must measure current in series, understand that the meter becomes part of the circuit.

Common PV measurements

  • Open-circuit voltage (Voc)
  • String current (Isc, or operating current)
  • Continuity checks (as appropriate and only when de-energized)