Wiring Size And Main Switch Protection - Hisense Hi-Therma Series Service Handbook

Installation
● Inner view:

8.3.9.4 WIRING SIZE AND MAIN SWITCH PROTECTION

Recommended minimum sizes for field-supplied wires and select the main switches according to the table below:
Capacity Power supply
44(2.0HP)
60(2.5HP) 220-240V~ 50Hz
80(3.0HP)
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ELB: earth leakage breaker; CB: circuit breaker; MC: maximum current.
●
Follow local codes and regulations when selecting field wires, circuit breakers and earth leakage breakers.
●
Use the wires which are not lighter than the ordinary polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
●
Ensure specifically that there is an earth leakage breaker (ELB)
installed for the units (outdoor unit).
● If the installation is already equipped with an earth leakage
breaker (ELB), ensure that its rated current is large enough to
hold the current of the units (outdoor unit).
PCB2
Power source cable
size
EN60335-1
2.5 mm2
2.5 mm2
4.0 mm2
●
All wires shall be firmly fixed with fixing clamps, and ensure
that each wire is reliably grounded.
●
Do not connect the power source cable to the TB2.
If connected, the printed circuit board will be damaged.
Transmission cable
size MC (A)
EN60335-1
9.8
0.75 mm2 12.0
16.8
●
Electric fuses can be used instead of magnetic circuit breakers
(CB). In that case, select fuses with similar rated values as the
CB.
●
The earth leakage breaker (ELB) mentioned in this manual
is also commonly known as residual current device (RCD) or
residual current circuit breaker (RCCB).
●
The circuit breakers (CB) are also known as thermal-magnetic
circuit breakers or just magnetic circuit breakers (MCB).
148
ELB
CB (A)
(nº poles/A/mA)
16 2/16/30
16 2/16/30
20 2/20/30