En-8
6.1. Electrical requirement
Power supply cable
Transmission cable
Earth cable
Conductor size
(mm
2
)
1.5 1.5(MIN.)
Conductor size
(mm
2
)
Max length
(m)
Bus wire 0.3(MIN.)
500
*
*This length shall be the total extended length in the system
of the group.
Use conformed cable with Type 245 IEC57. (Power supply •
cable or transmission cable)
Perform all electrical work according to the standard.•
Install circuit breakers, which have the terminal spacing of •
more than 3 mm, in a place of near the indoor unit and out-
door unit.
Wiring size must comply with the applicable local and na-•
tional code.
CAUTION
Be sure to execute the electrical work according to the •
Laws of each country and the Installation Instructions.
In addition, be sure to set as exclusive line and use the
rated voltage and circuit breaker.
6. ELECTRICAL WIRING
WARNING
Electrical work must be performed in accordance with •
this Manual by a person certifi ed under the national or
regional regulations. Be sure to use a dedicated circuit
for the unit.
An insuffi cient power supply circuit or improperly per-
formed electrical work can cause serious accidents such
as electric shock or fi re.
Before starting work, check that power is not being sup-•
plied to the indoor unit and outdoor unit.
Use the included transmission cables and power cables •
or ones specifi ed by the manufacturer. Improper connec-
tions, insuffi cient insulation, or exceeding the allowable
current can cause electric shock or fi re.
For wiring, use the prescribed type of wires, connect •
them securely, making sure that there are no external
forces of the wires applied to the terminal connections.
Improperly connected or secured wires can cause seri-
ous accidents such as overheating the terminals, electric
shock, or fi re.
Do not modify the power cables, use extension cables, •
or use any branches in the wiring. Improper connections,
insuffi cient insulation, or exceeding the allowable current
can cause electric shock or fi re.
Match the terminal block numbers and connection cable •
colors with those of the outdoor unit. Erroneous wiring
may cause burning of the electric parts.
Securely connect the connection cables to the terminal •
blocks. In addition, secure the cables with wiring holders.
Improper connections, either in the wiring or at the ends
of the wiring, can cause a malfunction, electric shock, or
fi re.
Always fasten the outside covering of the connection •
cable with the cable clamp. (If the insulator is chafed,
electric leakage may occur.)
Securely install the electrical box cover on the unit. •
An improperly installed electrical box cover can cause
serious accidents such as electric shock or fi re through
exposure to dust or water.
Install sleeves into any holes made in the walls for wiring. •
Otherwise, a short circuit could result.
Install a ground leakage breaker. In addition, install the •
ground leakage breaker so that the entire AC main power
supply is cut off at the same time. Otherwise, electric
shock or fi re could result.
Install a ground leakage breaker. •
If a ground leakage breaker is not installed, it may cause
electric shock or fi re.
Always connect the ground wire.•
Improper grounding work can cause electric shocks.
Install the remote controller cable and bus wire so as not •
to be direct touched with your hand.
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