54 | SAMLEX AMERICA INC.
SECTION 3 | Installation
The AC Input current in Charging / Pass Through Mode will be restricted by the breaker in the AC Input
Branch Circuit that is feeding the unit. The AC Input Current drawn by the unit can be programmed to the
desired "GRID MAX CURRENT" to match the Amp rating of breaker in the AC Input Branch Circuit. Optional
Remote Control EVO-RC-PLUS is required to change this limit [See EVO-RC-PLUS Manual: (i) Fig 4.3, Screen 2
(ii) Table 4.4 Screen 2 and (ii) Section 4.5.2.2]. The "GRID MAX CURRENT" set at 20A (Default Setting).
TABLE 3.2 SIZING OF AC INPUT WIRING AND BREAKERS
Model No.
(Rated Output Power
in Inverter Mode)
(Column 1)
Current Rating of AC In-
put Breaker (15, Fig 2.1)
(See Note 2)
(Column 2)
NEC Ampacity = 125%
of Column 2
(See Note 3)
(Column 3)
Conductor Size Based
on NEC Ampacity
at Column 3
(See Note 4)
(Column 4)
Size of Breaker
based on Column 4
(See Note 5)
(Column 5)
EVO-1212F
(1200VA, 10A)
20A 25A AWG #12 20A
EVO-1212F-HW
(1200VA, 10A)
20A 25A AWG #12 20A
EVO-1224F
(1200VA, 10A)
20A 25A AWG #12 20A
EVO-1224F-HW
(1200VA, 10A)
20A 25A AWG #12 20A
NOTES FOR TABLE 3.2 - SIZING OF GRID AND BREAKERS
1. Column 1 indicates the Model No. & output power (VA) & current (A) in Inverter Mode.
2. Column 2 indicates the Maximum AC Input Current of 20A which is equal to 20A rating of AC input
breaker (15, FIg 2.1)
3. Column 3 indicates NEC Ampacity based on which the wiring conductor size (Column 4) is determined.
This NEC Ampacity is not less than 125% of the maximum input current
(Column 2) - Refer to NEC-2014 (National Electrical Code) - Section 210.19(A)(1)(a)
regarding minimum Ampacity and size of Branch Circuit Conductors.
4. a. For EVO-1212F-HW and EVO-1224F-HW: Column 4 indicates the wiring conductor size that has
been determined based on NEC-2014 (National Electrical Code) - Ampacity Table 310.15(B)(16) for
Raceway for EVO-1212F and EVO-1224F-HW. This conductor size is based on (i) NEC Ampacity
(Column 3) (ii) conductor temperature of 75°C / 167°F and (iii) ambient temperature of 30°C / 86°F.
b. For EVO-1212F and EVO-1224F: Power may also be supplied through NEMA rated 20A-125V
detachable Power Cord (3 conductors, AWG #12) for free air - Ampacity Table 310.15(B)(17)
5. Column 5 indicates the Amp rating of AC input breaker. EVO-1212F/EVO-1224F have built-in 20A breaker
(15, Fig 2.1). External 20A AC input breaker is required to be installed for EVO-1212F-HW/1224F-HW.
The Amp rating of this breaker is based on the following considerations:
a. The Amp rating of the fuse has to be ≤ the Ampacity of wire size at Column 4. 20A rating has been
selected based on Column 2.
b. Closest Standard Ampere Rating of Breaker (20A) has been used - Refer to NEC-2014 (National
Electrical Code) - Section 240.6(A) regarding over current protection
c. Type of external AC input breaker (for EVO-1212F-HW / 1224F-HW) : Standard circuit breaker for 120
VAC Load Center/Breaker Panel/Panel Board
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