Curtis 1214-/15-/19-8 Manual 5
CONNECTIONS: High Current
Four tin-plated solid copper bus bars are provided for the high current connec-
tions to the battery and motor:
M- output to motor armature
B- negative connection to battery
B+ positive connection to battery/field
A2 plug diode to motor armature
Cables are fastened to the bus bars by M8 (
5
⁄16")
bolts. When tightening the bolts, two opposing
wrenches should be used to prevent bending the bus
bars and putting undue strain on the internal con-
nections.
2 — INSTALLATION & WIRING
M-
B-
B+
A2
Working on electric vehicles is potentially dangerous. You should
protect yourself against runaways, high current arcs, and outgassing
from lead acid batteries:
RUNAWAYS — Some fault conditions could cause the vehicle to run
out of control. Jack up the vehicle and get the drive wheels off the
ground before attempting these procedures or any other work on the
motor control circuitry.
HIGH CURRENT ARCS — Electric vehicle batteries can supply very high
power, and arcs can occur if they are short circuited. Always open
the battery circuit before working on the motor control circuit.
Wear safety glasses, and use properly insulated tools to prevent
shorts.
LEAD ACID BATTERIES — Charging or discharging generates hydrogen
gas, which can build up in and around the batteries. Follow the
battery manufacturer’s safety recommendations. Wear safety glasses.
☞
CAUTION
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