Instruction manual

2. Preparation for Installation
110
(1) Ground (green/yellow)
Table 2-19 Ground cable specifications
Cable type
Cable specifications
Number of core
wires
AWG No.
Ground cable
1
14
Make sure to connect the ground cable. Not connecting the grounded outlet to the
switch can cause electric shocks, as well as cause failures due to electrical noise.
(3) Distribution board
The branch circuit to supply power to the Switch requires circuit breakers or other devices.
When selecting circuit breakers, make sure that they meet the following rating,
considering the input current and inrush current/time.
 Breaker rating: 15 AT (for a 15 A circuit) or less
For details about input current of the Switch, see 2.2.1 General installation conditions, and
for details about inrush current and time of the Switch, see Table 2-20 Inrush current.
Table 2-20 Inrush current
Series
Model
Current (peak
value)
Time
AX3630S
Redundant power model
10A
10 ms or less
AX3640S
Redundant power model
10A
10 ms or less
NOTE
For easy operation, it is recommended that the distribution board should be
installed in the same room as the Switch or the adjacent room.
(4) Conditions for the incoming power to the distribution board
The capacity of electrical current supplied to the distribution board should be larger than
that of the breaker operating current.
Ensure that the capacity of incoming current to the distribution board should be
larger than the breaker operating current capacity. Otherwise, the breakers cannot
operate properly in case of trouble, which might cause a fire.
NOTE
Generally, the breaker operating current is larger than the rated current. Check the
specifications of the circuit breaker.