Samlex America SAM-800-12 - Manuel (Page 13)

10 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 11
The thickness of the cables is required to be determined appropriately. The recommended
cable sizes are based on the following 2 considerations (thicker of the two cable sizes has
been recommended):
• Excessive heating may lead to risk of insulation melt down and fire. Size is based on
the maximum current carrying capacity (Ampacity) for conductor temperatures of
105°C in free air at 30°C ambient.
• Excessive voltage drop will alarm and then shut down the inverter prematurely due
to low DC input voltage protection of the inverter (10.5V ± 0.3V). Size is based on 5%
voltage drop from the battery to the inverter at 1.25 times the maximum continuous
current draw at the rated output power.
table 4.2 recommended cable and fuse Sizes for Hard Wiring
inverter
Wattage
cable Size for 5% Voltage Drop for Distance Between
Battery and inverter =
recommended
fuse (not Supplied)
3 ft.
(Wire length = 6 ft.)
6 ft.
(Wire length = 12 ft.)
10 ft.
(Wire length = 20 ft.)
SAM-250-12 AWG #14 AWG #12 AWG #10 30A
SAM-450-12 AWG #10 AWG #8 AWG #6 60A
SAM-800-12 AWG #6 AWG #6 AWG #4 100A
As stated above, the 3 ft. battery cables provided with the unit are terminated with
customized 12.5 mm x 8.5 mm lugs for connection to the inverter with the help of custom-
ized terminal using M4 Nut /Thumb Screw arrangement (7,8 in fig 3.1 to 3.3). for connect-
ing the longer / thicker cables to the inverter, use the customized 12.5 mm x 8.5 mm tab
with 4.5 mm hole provided with the set of cable with battery clamps. Cut the cable a few
inches from the Tab Terminal and splice it with the thicker / longer cable. As the length of
the thinner end piece will be only a few inches, there will be no appreciable drop of volt-
age along the short end section.
!
caution!
• Please ensure that the recommended external fuse specified in Table 4.2 above (Fuse
is not supplied) is installed in series with the positive cable and is as close to the Bat-
tery (+) terminal as possible (preferably within 7”).
•. Please ensure that all the connections are tight. Loose connections may cause over-
heated wires and melted insulation.
ac Side connections
General information
1. The metal chassis of the inverter and the Grounding Terminal of the NeMA5-15r
outlet(s) are internally bonded (connected) to the Negative DC Input Terminal on the
inverter. In a vehicle / boat, the Negative Terminal of the battery is bonded to vehicl-
chassis / boat’s hull. Hence, the metal chassis of the inverter and the AC loads will be
automatically grounded (bonded to the vehicle chassis / boat’s hull).
SECTION 4 | Installation