Never miss any wiring errors! Achieve easy, reliable, and speedy measurements.
This product is a measuring instrument capable of checking miswiring of grounded outlets. ● It can determine miswiring of live wires between N-E (Neutral-Earth), which was previously difficult. ● It measures a current (approximately 10 mA) that does not trip a leakage breaker of 30 mA or more, even with N-E miswiring. ● Normal/miswired conditions are indicated by LED (green/red) lamps and a buzzer. ● An LCD display clearly shows the miswiring situation at a glance. ● Voltage measurement (between L-N) and grounding resistance measurement (between N-E). ● The LCD backlight automatically turns on with a light sensor, supporting measurements in dark places. ● The included conversion adapter allows compatibility with 3-prong/2-prong outlets.
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basic information
■Measurement results displayed with LED light and LCD display ■Compatible with 3-pole and 2-pole outlets ■Backlight that automatically turns on in dark places ■Example of judgment result display via LCD Display of voltage value between L-N Display of resistance value between N-E Judgment result displayed at the top of the display section Visual indication of miswiring locations ■Notes on N-E judgment function The MB23EW-4500K is designed for grounding methods where Type B (system grounding) and Type D (equipment grounding) are separated (T-T grounding). It cannot perform judgments for grounding methods where equipment grounding is directly connected to system grounding via a protective conductor (T-N grounding, structural grounding, shared grounding).
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Applications/Examples of results
■Specifications <Outlet Check> Outlet 3P 2P Measurement Content Normal, N-E/L-E reverse connection, N/E not connected, voltage abnormality Normal, L-N reverse connection, voltage abnormality Rated Voltage 100V (50/60Hz) Measurement Current 10mA or less Frequency 5.3Hz <Voltmeter (measures voltage between L-N)> Measurement Range 80–120V (Display Range: 80–250V) [45–65Hz] Accuracy ±2%rdg±4dgt <Resistance Value (measures resistance between N-E) *Not ground resistance value> Measurement Range (Auto Range) 200.0/2000Ω Accuracy ±3%rdg±5dgt Battery Used AA alkaline battery (LR6) ×2 (Auto Power Off in about 10 minutes) (Approx. 3000 measurements) Operating Temperature and Humidity Range -10 to 50℃ 85% or less (No condensation) Storage Temperature and Humidity Range -20 to 60℃ 85% or less (No condensation) Dimensions 212(L)×56(W)×39(D)mm Weight Approx. 250g (including batteries) Accessories 3P/2P conversion adapter (MB23EW-8218K), portable case (MB23EW-9161K), AA alkaline batteries LR6 ×2, instruction manual
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