Duracomm | 5
Section 2 | Installation and Operation
NOTE:
Inspect shipment upon receipt. Notify carrier if any damage occurs.
NOTE:
The outputs are NOT referenced to the chassis.
NOTE:
Do NOT black any cooling vents, and always allow adequate ventilation.
NOTE:
Using battery capacity larger than the suggested value will not lead to damage of the battery. The main drawback
is the longer time to fully charge the battery.
NOTE:
If you are unsure about max allowable charging current of your battery, please refer to the technical specification
of the battery or consult its manufacturer. This unit is designed for charging lead-acid batteries and must be installed in
a dry and well-ventilated area.
NOTE:
The cables between charger and battery should be kept as short as possible to prevent excessive voltage drop.
Too much voltage drop will lead to longer charging periods. Refrain from connecting new and old batteries in series.
Charger should be in the OFF mode before making battery connection or disconnection.
Conductor Pretreatment
All kinds of copper conductors can be clamped without treatment. DO NOT solder tin stranded conductors. The solder
yields and fractures under high pressure. The result is increased contact resistance and excessive temperature rise.
Additionally, corrosion has been observed due to the fluxes. Notch fractures at the transition from the rigid tinned part
to the flexible conductors are also possible. Ferrules can be used as a protection when wiring stranded conductors.
Copper ferrules prevent the current transfer from being influenced by dissimilar metals and remove the risk of
corrosion. Always use the correct tool to crimp the ferrule.
Recommended Copper Wire Size for Current Capacity
According to MIL-W-5088B, required wire size of an insulated, single conductor in free air for a given current level is
shown as following:
Current Level in Amperes
Wire Size Requirement up to 5 feet
Wire Size Requirement up to 10 feet
14 Amps
18 AWG
16 AWG
20 Amps
16 AWG
14 AWG
30 Amps
14 AWG
12 AWG
40 Amps
12 AWG
10 AWG
50 Amps
10 AWG
8 AWG
70 Amps
8 AWG
6 AWG
100 Amps
6 AWG
4 AWG
