R410A All DC Inverter V5 X Series 50Hz      MCAC-VTSM-2015-10 
120                                                                                                                                                                                                        Installation 
7. Selection wire size based on the value of MCA 
8. MFA is used to select the circuit breaker and the ground fault circuit interrupter (earth circuit breaker). 
MCA: Min. Circuit Amps. (A); TOCA: Total Over-current Amps. (A); MFA: Max. Fuse Amps. (A); MSC: Max. Starting Amps. (A)       
RLA: Rated Load Amps. (A); OFM: Outdoor Fan Motor; FLA: Full Load Amps. (A); KW: Rated Motor Output (KW)     
13.3 Electrical wiring installation 
Note: 
  Separate power supply for indoor unit and outdoor unit. 
  The power supply should have specified branch circuit with leakage protector and manual switch. 
  The power supply, leakage protector and manual switch of all the indoor units connected to the same outdoor unit should be 
universal. (All indoor unit power supplies should be tied into the same circuit. Powering on and shutting down all indoor units 
connected to the same outdoor unit should be done simultaneously in order to ensure system life span)   
  Please put the connective wiring system between indoor unit and outdoor unit with refrigerant piping system together. 
  Use 3-core shielded wire as signal wire between indoor and outdoor units, multi-core wire is unavailable. 
  Please comply with relevant local codes and standards.. 
  Power wiring should be done by professional electrician. 
13.3.1 Outdoor unit power supply wiring 
 
 
 
 
 
   
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
GND
GND
GND
GND
Branch box
Leakage
protector
Manual
 switch
Leakage
protector
Manual
 switch
GND
Branch box
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
  Power facilities 1
(with leakage protector)
     Power facilities 2
(with leakage protector)