Voltage Drop Calculator

Build power and lighting plans that account for voltage drop. Our voltage drop calculator helps you estimate maximum wire lengths based on gauge and load, so your LED installations shine from start to finish.

Power Supply

QOMD
120-600W at 12VAC or 24VAC

Power Supply

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iQ-PH+QD1
Q-DIM
Q-HEX
Q-HEX-MINI (AC)
Q-HEX-MINI (DC)
Q-SET+QZ-DALI-DT6
Q-SET+QZ-DALI-DT8
Q-SET+QZ-DMX
Q-SET+QZ-DW
Q-SET+QZ-ND
Q-SET+QZ-PH/0-10V
Q-SET-1
Q-SET-2
Q-SET-3
Q-SET-eLED+0-10V
Q-SET-eLED+ND
Q-SET-mLED
Q6M
Q6M-DC+CAP
Q6S
QJB
QJBL
QOM-DC+CAP
QOM-eLED+0-10V
QOM-eLED+0-10V-PS
QOM-eLED+DALI-DT6
QOM-eLED+DALI-DT6-PS
QOM-eLED+DALI-DT8
QOM-eLED+DALI-DT8-PS
QOM-eLED+DMX
QOM-eLED+DMX-PS
QOM-eLED+IA
QOM-eLED+TW
QOM-eLED+TW-PS
QOM-eLED+WD
QOM-eLED+WD-PS
QOM-eLED-ND
QOM-eLED-ND-PS
QOM-PH
QOM-PH-PS
QOMD
QOMS
QT-CAB-eLED+0-10V
QT-CAB-eLED+0-10V-AWN
QT-CAB-eLED+DALI-DT6
QT-CAB-eLED+DALI-DT6-AWN
QT-CAB-eLED+DALI-DT8
QT-CAB-eLED+DALI-DT8-AWN
QT-CAB-eLED+DMX
QT-CAB-eLED+IA
QT-CAB-eLED+TW
QT-CAB-eLED+WD
QT-CAB-eLED+WD-AWN
QT-CAB-eLED-ND
QT-CAB-QZ-PH/0-10V
QTLD
QTLQ
QTLS
QTLT
QTM-DC+CAP
QTM-eLED(E)
QTM-eLED+0-10V
QTM-eLED+0-10V-AWN
QTM-eLED+DALI-DT6
QTM-eLED+DALI-DT6-AWN
QTM-eLED+DALI-DT8
QTM-eLED+DALI-DT8-AWN
QTM-eLED+DMX
QTM-eLED+IA
QTM-eLED+TW
QTM-eLED+WD
QTM-eLED+WD-AWN
QTM-eLED-ND
QTMD
QTMS
QZ-BOWTIE+DIMMER
QZ-DALI-DT6
QZ-DALI-DT8
QZ-DMX
QZ-DW
QZ-ND
QZ-PRO-PH/0-10V
QZ-STICK-PH/0-10V
QZLP

Load Wattage

NEC Article 411: Low voltage circuits limited to 25A max (300W @ 12V, 600W @ 24V).

Wire Gauge Limits: 10 AWG for >20A, 12 AWG for >15A, 14 AWG for ≤15A.

ST Feature: Switch and Dimmer show identical values due to primary side dimmer compensation in QOM/QSET power supplies.

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Voltage Drop Calculator

QOMD

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