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13-7
EL
EC
TR
IC
G
O
K
AR
TS
phone: 1-800-854-3140 | 1-503-304-8899 fax: 1-800-366-7505 | 1-503-304-1899
www.jjamusements.com
Open-circuit problems such as broken, disconnected wires and/or connections stop current
fl
ow. After you
fi
x an open
circuit, switch the circuit on again and check for lingering voltage drop. Until you get current
fl
owing and check the circuit
again, you can’t know if the entire circuit is healthy.
NOTE:
Although resistance-free connections, wires and cables would be ideal, most of them will contain at least some
voltage drop.
MAXIMUM LIMITS
0.00V across a connection
0.20V across a wire or cable
0.30V across a switch
0.10V at a ground
Voltage Drop Testing
The battery pack contains four 12-volt, deep-cycle batteries
connected in series to produce a 48vdc “pack”. 4-gauge
copper cables are used to connect the pack and furnish
power through the relay/solenoid to the powered fuse and
components.
From the main fuse, power
fl
ows in from the charge circuit
and/or the battery pack, then out to all load devices.
Use the voltage drop test to check the battery-terminal- to-
cable-end and battery-pack-to-breaker-switch for excessive
resistance. The voltage drop should be very small on this
type of large-wire, short-run connection. Typical readings
would be .008 to .030. Any reading of .200 or higher
indicates severe resistance problems in the circuit section
being tested.
NOTE:
The terminal ends of the SB connector can be
unloaded from the connector and repaired/replaced.
During reinstallation, make sure the wires are properly
loaded in the connector. The black wire from the charger
cable goes to the black wire from the charger. If these are
reversed, it will “blow” the output fuse in the charger.
Po
st