Hitachi YUTAKI ATW-YCC-03 Installation And Operation Manual page 47

5.1.3 Wiring size and minimum requirements of protection device
!
CAUTION
• Check to ensure that the field supplied electrical components (main power switches, circuit
breakers, wires, connectors and wire terminals) have been properly selected according to the
electrical data indicated in this chapter and they comply with National and local codes. If it is
necessary, contact with your local authority in regards to standards, rules, regulations, etc.
• Use a dedicated power circuit for the unit. Do not use a power circuit shared with the outdoor
unit or any other appliance.
Use wires which are not lighter than the polychloroprene sheathed flexible cord (60245 IEC 57
code designation)
Power
Model
supply
ATW-
~230V 50Hz
YCC-03
!
CAUTION
• Ensure that there is an Earth Leakage Breaker (ELB) and a Circuit Breaker (CB) installed in the
power supply line.
• If the installation is already equipped with an ELB, ensure that its rated current is large enough
to hold the current of the units (Outdoor unit)

NOTE
• 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 on this manual is also commonly known as Residual
Current Device (RCD) or Residual Current Circuit Breaker (RCCB).
• The circuit breakers (CB) are also know as Thermal-Magnetic Circuit Breaker or just Magnetic
circuit breaker (MCB).
PMEN0581 rev.2 - 04/2023
Max.
Operation
Current
mode
(A)
- 5
With DHW
19
Tank
Power supply Transmitting
cables cables
EN60335-1 EN60335-1
2 x 0.75 mm
2
2 x 0.75 mm
2 x 4 mm
2
ELB
CB
(nº of poles/A/
(A)
mA)
5
2/40/30
2
20
41
5