1) RCD a) Residual Current Device for shock protection b) Residual Clapping Device 2) MCB a) Magnetic Circuit Board b) Miniature Circuit Breaker 3) GFCI a) General Fault Circuit Interrupter b) Ground Fault Circuit Interrupter 4) AFCI a) Arc Fault Circuit Interrupter b) Automatic Frequency Circuit Interrupter 5) VFD a) Variable Frequency Drive b) Voltage Frequency Device 6) UPS a) Universal Power System b) Uninterruptible Power Supply 7) LED a) Light Emitting Diode b) Light Energy Device 8) EMF a) Electromotive Force b) Electric Magnetic Field 9) PLC a) Programmable Light Circuit b) Programmable Logic Controller 10) SMPS a) Switched Mode Power Supply b) Static Magnetic Power Source

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