Dead Testing: Sequence, Instrumentation, Range/Units

Oliver Balay
Flashcards by Oliver Balay, updated more than 1 year ago
Oliver Balay
Created by Oliver Balay over 6 years ago
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Dead Testing: Sequence, Instrumentation, Range/Units Cards OB

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Question Answer
Continuity of Protective Conductors (inc. Main & Supplementary conductors) Instrument: Low Resistance Ohmmeter Unit Range: Low Ohms (Ω) Note: Radial circuits: (R1 + R2) or R2
Continuity of Ring Final Circuit Conductors Instrument: Low Resistance Ohmmeter Unit Range: Low Ohms ( Ω) Note: 3 steps (see OSG)
Insulation Resistance Instrument: Insulation Resistance Tester Test Voltage Range: 500 V DC (up to 500 V AC) Unit Range: High resistance (Mega Ohms) Note: Precautions to take prior to testing
Polarity Instrument: Low Resistance Ohmmeter Range/Unit: Low Ohms (Ω) Note: Confirmation of polarity is usually a tick or a cross.
Earth Electrode Resistance (Dead) Instrument: Earth Electrode Resistance Tester Range/Unit: Ohms (Ω) Note: TT Systems (see OSG for guidance)
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