52
Wiring Work
Specification of electronic wire
Power supply
MCCB
ELB or ELCB
Power cable
Earth cable
Communication cable
Max : 242V
Min : 198V
XA
XA, 30mmA
0.1 s
2.5mm
2
2.5mm
2
0.75~1.5mm
2
t
Decide the capacity of ELCB(or MCCB+ELB) by below formula.
The capacity of ELCB(or MCCB+ELB) X [A] = 1.25 X 1.1 X ΣAi
✴
X : The capacity of ELCB(or MCCB+ELB).
✴
ΣAi : Sum of Rating currents of each indoor unit.
✴
Refer to each installation manual about the rating current of indoor unit.
✴
Rating current
Model
Rating current
AM050FNKDEH
1.7A
AM100FNKDEH
3.7A
t
Decide the power cable specification and maximum length within 10% power drop among indoor units.
✴
Coef: 1.55
✴
Lk: Distance among each indoor unit[m]
Ak: Power cable specification[mm
2
]
ik: Running current of each unit[A]
n
Σ
k=1
(
Coef×35.6×L
k
×i
k
) < 10% of input voltage[V]
1000×Ak
