If like me you have an SEC-1223 which is wired for 240V and you need to convert it to 110V for an expedition etc conversion is NOT just the flick of a switch!
I spend several hours searching the web for instructions and the only instructions that are correct are provided below. However, proceed at your own risk!
For SEC-1223CE [From the manufacturer]
· Unplug the power supply from the
· Remove the top cover
· There are two vertical male pin
connectors at points “C” and “E” on the printed circuit board (PCB). A brown /
black wire from the input filter choke is connected to the vertical male pin
connector at point “C” through a female quick connect. For operation at 120
VAC, points “C” and “E” are required to be connected (shorted). This may be
done by using a short piece of # AWG 18
insulated jumper wire. Solder one end of this jumper wire to the brown / black
wire connected to vertical male pin connector at point “C” and solder the other
end of this jumper wire to the vertical male pin connector at point “E”. Insulate
the soldered points with insulation tape.
· A fuse has been provided on the
AC side. For 230 VAC operation, the fuse is rated at 250 V, 4A, with time
delayed operation. For 120 VAC operation, the 4 A fuse has to be replaced with
a 6.3 A fuse. The specifications of the 6.3 A fuse are as follows;
Voltage 250 V
Current 6.3 A
Type Glass body, time
Dimensions 5mm X 20 mm
Example Manufacturer: Littelfuse Model: 21806.3