Alpha Technologies AMP24 HP - Manual (Page 41)

39 Doc. #: 0260011-J0 Rev B
5.3 DC Battery and Ground Cabling
5.3.1 Hardware and Torque Specifications
The DC wiring is attached with 3/8” hardware (1” bolt, washer, spring washer) and 8 are provided
with each AMPS24 system (2 per each of the 4 bolting locations). However, the crimp or lug is not
provided.
The crimp/lug can either be on 1” centers with 3/8” or ½” holes, or 1.75” centers with ½” holes only.
Bus bar tie kits for DC- are included to give the installer the option to make a single battery
connection or two separate battery connections (A/B feeds).
Torque specifications for DC wiring (3/8" bolts that attach the DC lugs at the back of the DC
distribution box) are as follows:
• Imperial: 190 – 240 inch/lbs
• Metric: 21.5 – 27.1 N-m
5.3.2 DC Battery Wiring – Single Feed
The following figures show a unit wired for single feed with two battery strings in parallel.
GND
GND
DC plus
DC minus Tie Bar
NOTE: the
wire lugs
shown are
for illustration
only. They
are not sup-
plied with the
equipment.
Figure 19 — Single feed, parallel battery strings
AMPS24 HP
AC
To MGB
+
–
–
+