Meter Abbreviation - AH Ampere-hour meter
Meter Abbreviation - CRO Oscilloscope
Meter Abbreviation - DM Demand Meter
Meter Abbreviation - F Frequency Meter
Meter Abbreviation - GD Ground Detector
Meter Abbreviation - OSC Oscillograph
Meter Abbreviation - PF Power Factor meter
Meter Abbreviation - PH Phase Meter
Meter Abbreviation - SYN Synchroscope
Meter Abbreviation - TD Transducer
Meter Abbreviation - VA Volt-ammeter
Meter Abbreviation - VAR Varmeter
Meter Abbreviation - VARH Varhour meter
Meter Abbreviation - WH Watthour meter
light color - A Amber (Potential light)
, A-07 Electrical Print Reading - Practice Questions & Verified Answers
light color - B Blue (Annunciator panel)
light color - C Clear
light color - G Green (off)
light color - R red (on)
light color - W White (Disagreement)
Relay Abbreviation - CC Closing coil
Relay abbreviation - CR Closing/control relay
Relay Abbreviation - TC Trip Coil
Relay abbreviation - TD Time delay relay
Relay abbreviation - TR Trip relay
Relay Abbreviation - X Auxiliary relay
Contact or switch abbreviation - a Auxiliary contact - This contact always "follows the breaker"
Contact or switch abbreviation - b Auxiliary contact - This contact always "follows the opposite of what the breaker
does"
How do contacts "a" and "b" work in a palet switch? "a" follows the breaker, "b" is the opposite
Contact or switch abbreviation - PSD Differential pressure switch