Toshiba SUPER-HRM MMY-MAP0802FT8 Installationshandbuch Seite 7

6
ELECTRIC WIRING
Electrical wiring design
3-phase
50Hz 380-415V
Earth leakage
breaker
Earth L1 L2 L3
hand switch N
Outdoor
power source
• Power supply specifications of combined outdoor units
When a distribution panel is provided for each combined outdoor units as shown in the right figure, select the
power supply wiring of the main trunk line (a) up to the distribution panel and fuse from the table below.
Outdoor power supply
3-phase,
380-415V 50Hz
• Unit capacities and power supply wire sizes (Reference)
Model
MMY-MAP0802FT8
MMY-MAP1002FT8
MMY-MAP1202FT8
MMY-AP1802FT8
MMY-AP2002FT8
MMY-AP2402FT8
MMY-AP2602FT8
MMY-AP2802FT8
MMY-AP3002FT8
• Determine the wire size for indoor unit according to the number of connected indoor units downstream.
• Observe local regulation regarding wire size selection and installation.
L1 L2 L3 L1 L2 L3
N
Earth leakage
Main switch
breaker
(1)
(a) (a)
Distribution Distribution
panel
Do not connect power supply line between outdoor
units through the incorporated terminal block.
NO
GOOD
N
Header
L L L
1 2
Earth
(2)
(b)
panel
Power supply wiring
Wire size
3.5 mm² (AWG #12) Max. 20 m
5.5 mm² (AWG #10) Max. 28 m
5.5 mm² (AWG #10) Max. 27 m
14 mm² (AWG #6) Max. 37 m
14 mm² (AWG #6) Max. 35 m
22 mm² (AWG #4) Max. 41 m
22 mm² (AWG #4) Max. 40 m
38 mm² (AWG #4) Max. 66 m
38 mm² (AWG #1) Max. 64 m
3
Header unit Fllower unit
L1 L2 L3 L1 L2 L3
N N
Follower
unit 1
N L L L N
3 1 2 3
Fllower unit
L1 L2 L3
N
Follower
unit 2
L L L N
1 2 3
Field fuse
30 A
30 A
30 A
50 A
60 A
75 A
75 A
75 A
100 A