9
2.3
Making the AC Input Connections
Before making any connections to the TPSD ensure that the AC Power is off at the main breaker box and that
both of the unit’s breakers are off. Check that the source voltage and frequency matches the voltage and
frequency listed on the charger nameplate. For units with transformer taps, verify that the tap has been set to
the correct AC input. (See Section 2.2.1 for instructions on changing the transformer tap). Select wire size,
using the table below, based on an overload current of 110-115% of the input current listed on the charger
nameplate.
BREAKER\FUSE
SIZE
(AMPS)
WIRE SIZE
REQUIREMENT
FOR CUSTOMER
CONNECTION
EQUIPMENT
GROUNDING
CONDUCTOR
MINIMUM
1
#14
#14
3
#14
#14
4
#14
#14
5
#14
#14
6
#14
#14
10
#14
#14
15
#12
#12
20
#12
#12
25
#10
#12
30
#10
#10
35
#8
#10
40
#8
#10
45
#8
#10
50
#8
#10
60
#6
#10
70
#6
#8
80
#4
#8
90
#4
#8
100
#4
#8
110
#2
#6
125
#2
#6
130
#2
#6
140
#1
#6
150
#1 #6
Table 6 - Wire Size Minimum Requirements
NOTE: These are recommended sizes. All National and Local Wiring Codes must be followed
AC Connection Procedure
First connect an adequate earth ground lead (use table above for sizing) to the terminal marked “GROUND” or
“GND”. Run the input AC wiring to terminals marked L1 and L2 or L3 on the terminal block TB1 inside the unit
(for units with transformer taps use the table on page 8 for input connections). To make these connections,
strip the insulation about 0.5 inches (13 mm) and install the lugs on the incoming wires, then connect the wires
to the appropriate terminals.
