RSA Bardo Electrical Systems (Pty) Ltd works together with Air Conditioning Company's by installing power to their units. These AC Units are deemed fixed electrical equipment.
Every electrical installation requires the work undertaken, materials used and design to comply to the Wiring Code SANS 10142 and The Occupational Health and Safety Act
This requires that a registered person as defined (mater electrician, installation electrician or electrical tester for single phase; will issue a Certificate of Compliance together with a test report.
The Certificate shall be in the form of the Certificate of Compliance published in the Electrical Installation Regulations, 2009 and the Test Report shall be in the form of the test report in SANS 10142 8.8
Air Conditioners come in different sizes, which means they all draw varying amounts of power. Current is an important factor when designing the installation especially the peak current.
AC single phase amps to kilowatts calculation
The power P in kilowatts (kW) is equal to the power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V) divided by 1000:
P(kW) = PF × I(A) × V(V) / 1000
AC three phase amps to kilowatts calculation
Calculation with line to line voltage
The power P in kilowatts (kW) is equal to square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage VL-L in volts (V) divided by 1000:
P(kW) = √3 × PF × I(A) × VL-L (V) / 1000