SMA E-Panel installation manual
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P a g e
1 0 - 2 3 4 - 1 R E V : A
WARNING: Shock hazard.
Disconnect the batteries and input power (PV, Hydro, Wind ETC.) before
opening the Classic front cover.
Note:
When two or more Classics are paralleled onto one DC Source a blocking diode must be used between each
Classic and the input source to isolate each Classic from other ones.
The Classic should be wired by a qualified professional and needs to meet all applicable electrical codes. Always
make sure all source and battery circuits are de-energized and wait 5 minutes before working on the wiring in the
Classic. The Classic has 2 common (negative) terminals. Therefore, only one negative conductor is required to run
from the E-Panel and terminate on either (or both) common negative terminal. The Positive DC source wire goes to
the
PV+
screw. The Positive Battery DC wire goes to
b
terminal.
Torque the terminal screws to the specs below.
The Torque specs on the DC terminal connector (big blue terminal connector) are:
Up to #10 AWG torque to 25-35 inch pounds.
#8 AWG torque to 30-40 inch pounds.
#6 AWG or larger torque to 40-50 inch pounds.
Installing and Wiring the Classic Charge Controller:
The MNCCP Dual Classic Mounting Plate (Sold separately) holds two Classics and is used with MidNite E-Panels.
The MNCCP Dual ships with the MNCCCK Close Nipple Kit and three 10 x 3/8 Flathead screws.
The three screws are for attaching the MNCCCP bracket to the E-Panel. A knockout is provided that lines up with the
wire exit of the Classic.
The MNCCB-L and MNCCB-R each hold one charge controller. Specify MNCCB with an L for left and an R for
mounting to the right of the E-Panel respectively. A conduit nipple is not supplied with the single bracket. Order the
MNCCCK if the close nipple and locknuts and insulating bushing are required.
On the next page is the layout of the Classic wiring compartment.
Besides the DC in and out there may be network, USB, Aux and battery temp sensor wires. These wires should be run
in a separate conduit when possible to reduce noise on the signal lines. They may use the same knockout as the other
wires.
Classic Charge Controller
- Optional accessory
Classi
c
L
ite
Charge
Co
n
tr
oll
er
Classi
c
Charge
Contr
ol
ler
The Classic and Classic Lite MPPT Charge
Controllers helps you get the most from your
power source as well as providing ground fault
and arc fault protection.
A Quad system may have up to seven Classic
Charge Controllers.
