Samlexpower SI-A1-VR1500 Owner's Manual - page 6

INSTALLATION NOTES: 

WARNING: Keeping ventilation when using batteries. Batteries may generate 

flammable gas during charging or discharging. 

The inverter has four slots in its mounting bracket that allow the unit to be 

fastened against a bulkhead, floor, wall or other flat surface. Ideally, the 

mounting surface should be cool to the touch.   

It is more electrically efficient to use longer AC wiring than DC wiring, so 

install the inverter as close as possible to the 12 VDC power source. 

The inverter can be operated in any position, however, if it is to be mounted on a 

wall, mount it horizontally so that indicators, switches, outlets and terminal 

blocks located on the front panel are visible and accessible. If inverter is to be 

installed in a moving vehicle, we strongly recommends that the inverter be 

shock-mounted either on the floor (in a clear, safe area) or on a secure flat 

surface. 

CAUTION: The inverter must be connected only to batteries with a nominal 

output voltage of 12volts. The unit will not operate from a 6 volt battery, and will 

sustain permanent damage if connected to a 24 volt battery. 

CAUTION: Loose connectors may cause overheated wires and melted 

insulation.  Check to make sure you have not reversed the polarity. 

Reverse polarity connection will result in a blown fuse and may cause 

permanent damage to the inverter. 

CONNECTING TO A POWER SOURCE 

Use ( #2 AWG for VR1500; 2x #2 AWG for VR2000/3000) wire for if the 

inverter to power source connection is 1.5 meters or less. For longer cable 

lengths, consult technician for appropriate cable size. In either case, 

protect the positive (+) wire from shorts by installing a fuse or circuit 

breaker close to the DC power source (battery) terminal. The fuse should 

choose 200A for VR1500, 300A for VR2000, 400A for VR3000. 

1.  Check to be sure the inverter’s power switch is turned off and that no 

flammable fumes are present. 

2.  Identify the positive (+) and negative (-) DC power source (battery) 

terminals. 

3.  Install a fuse holder or breaker close to the positive (+) terminal of the 

DC source (battery). 

4.  Connect a length of wire on one side of the fuse holder or circuit 

breaker. Connect the other end if the wire to the positive (+) terminal of 

the inverter. 

6