Table 2-4, Recommended Wires Sizes For 3% Loss - Magnum Energy ME-SBC Owner's Manual

Installation
2.4.1 ME-SBC
TM
CAUTION: Before connecting any wires, turn off any battery charger
and loads that are connected to the
will be combining.
Info: If installing in a boat, RV or truck, ensure the conductors
passing through walls, bulkheads or other structural members are
protected to minimize insulation damage such as chafi ng; which can
be caused by vibration or constant rubbing.
The ME-SBC should now be mounted if not please refer to section 2.2.
TM
During installation please refer to Figures 2-5 during the following steps:
1. Unplug the Power Terminal Block from ME-SBC
ings are unscrewed enough to allow the wires to be inserted.
2. Select and connect an appropriately sized red wire
- MAIN POS (+) on the Power Terminal Block to the positive terminal of
the Main Battery.
3. Select and Connect an appropriately sized red wire with a white stripe
from terminal #2 - AUX POS (+) on the Power Terminal Block to the positive
terminal of the Auxiliary Battery.
4. Select and connect an appropriately sized a black wire
- COM NEG (-) on the Power Terminal Block to the Negative bus-bar or
vehicle chassis.
Info: The Negative busbar must connect the negative terminals on
the Main and Auxiliary Batteries together.
5. When all the connections are made and checked, plug the Power Terminal
Block into the ME-SBC
Info: If there is a miswire in the system the "Reverse Polarity" LED
will be on. Correct the polarity of the wires connected to the Main
Terminal.
6. Immediately after applying DC power, the LED's on the ME-SBC
come on as the unit goes through a power-up self-test. After the initial self-
test completes, the Status LED should be illuminated. If so, your ME-SBC
is now ready for set-up; if not, please refer to the troubleshooting section.
10 ft
12 V
10 AWG
24 V
12 AWG

Table 2-4, Recommended Wires Sizes for 3% loss

note 1 : The wires connected to #1 - MAIN POS (+), #2 - AUX POS (+)
and #3 - COM NEG (-) should be sized for 30 amps and the same size.
The battery positive #1 - MAIN POS (+) and #2 - AUX POS (+) lines
should be protected with a 30 Amp fast blow fuse. Wire size should be
appropriate for the application.
5
Wiring Connections - 25 Amp
to supply DC power.
TM
15 ft
8 AWG not recommended not recommended
12 AWG
battery banks that the ME-SBC
and ensure the open-
TM
from terminal #1
1
from terminal #3
1
20 ft
10 AWG
©2009 Magnum Energy Inc.
TM
1
should
TM
TM
30 ft
8 AWG