SENS MicroGenius S2/S4 Technical Manual
14
6
SETUP AND WIRING
IMPORTANT!
The charger is configured at the factory and typically requires no adjustments before operating.
Refer to the label on the inside lower cover for factory configured output and alarm relay assignments. The
charger may be reconfigured using the front panel keypad or by software programming using the SENS Setup
Utility.
All wiring must comply with applicable codes and local ordinances.
WARNING:
ENSURE THAT AC POWER IS DISCONNECTED AT A CIRCUIT BREAKER
OR OTHER SAFETY DISCONNECT BEFORE WIRING THE CHARGER
6.1.
Wire Ratings and Sizes
6.1.1.
All power conductors should be rated for use at 90°C or higher and 400V or higher. Alarm relay
conductors and communications data cable should be rated for use at 75°C or higher.
6.1.2.
Coordinate the AC input conductor size with the customer-provided branch circuit protection
device.
6.1.3.
For best performance and recharge time, refer to the following table to determine the
appropriate output conductor gauge and length. Use of a remote temperature sensor (SENS p/n
209481, see section
9.12
) is highly recommended for best charging performance.
Table 2 – DC Output Cable Size
Charger Rated
Output Current
(Amps)
Wire Size
Resistance
per Foot
(mΩ/Ft.)
Maximum Charger to
Battery Distance (Ft.)
AWG mm
2
12V
24V
15
14
2.5
2.50
6
12
12
4.0
1.60
10
20
10
6.0
1.00
17
34
8
10
0.63
26
52
6
16
0.40
42
84
20
14
2.5
2.5
5
10
12
4
1.6
8
16
10
6
1
13
26
8
10
0.63
20
40
6
16
0.4
31
62
25
14
2.5
2.5
4
8
12
4
1.6
6
12
10
6
1
10
20
8
10
0.63
16
32
6
16
0.4
25
50
30
14
2.5
2.5
3
6
12
4
1.6
5
10
10
6
1
8
16
8
10
0.63
13
26
6
16
0.4
21
42
4
25
0.25
33
66
2
35
0.16
52
104
35
14
2.5
2.5
3
6
12
4
1.6
4
8
10
6
1
7
14
