Owner`s manual

Installation
ITC-Series
Inverter Page 20 7/18/03
4.2 DC Wiring
Preliminary Considerations
1.
BE AWARE
that, as a large number of capacitors become charged upon completion of the DC circuit,
THERE WILL BE A LARGE SPARK
when the last battery connection is made. The spark is normal and will
occur every time the batteries are connected.
2. The DC cables should be as short as possible. It is electrically more efficient to run the lower current AC
wiring longer distances than the DC cables. (See DC Cable Sizing Chart for proper size.)
3. Route the DC positive and negative cables as close together as possible, and use cable ties to keep them
together. This reduces some electromagnetic radiation that could interfere with some sensitive electronics.
3. On vehicle installations do not use the vehicle chassis as the DC negative conductor. Use a cable the same
size as the DC positive to go directly from the inverter to the battery negative.
4. Route the AC and DC power wiring separately, and with as much physical separation as possible, from low
voltage wiring such as audio and video signal wires.
5. DC power input cables that pass through steel or other ferrous metal walls need to pass through the same
hole. If two holes are required, cut a slot connecting the two holes to prevent a transformer effect.
6. Do not allow wire fragments or metal shavings to fall into the DC wiring compartment or to enter the inverter
in any way. Severe inverter damage will result which is not covered by the warranty.
7. Do not connect the inverter to the battery at this time. Final battery connections will be made after all
installation issues have been inspected.
8. WARNING:
A poorly made high current connection may result in the risk of fire and personal injury.
9. WARNING:
Be sure of the polarity of the DC input wiring. Reverse polarity may severely damage your
inverter and is not covered under warranty. Risk of fire or explosion of batteries may occur due to very high
currents.
10.A DC fuse is required to properly protect the inverter.
11.The table below shows the recommended minimum cable size which should be used. Wire sizing charts
published in the NEC may allow a greater amp capacity than we recommend. We have sized the cable for a
minimum voltage drop on the cable to maintain better performance of your inverter installation. The inverter’s
DC cable terminal lugs can accommodate cable sizes up to 250 MCM.
T 2 Table 4-1 DC Cable and Fuse Sizing Chart
DC Cable Size Max. Distance
from Inverter to
Battery in Feet
2100W (3200W)
Terminal Lug -
Amp Part
Number
Terminal Crimping Tool – Amp Part
Number
250MCM Copper
Conductor
24 (16) 325703 AMP DYNA-CRIMP Head - Part #69099
AMP DYNA-CRIMP Die - Part #46751-2
AMP DYNA-CRIMP Hydraulic Power Units -
Part #69120-1 or 314979-1
4/0 Copper
Conductor
20 (13) 321271 AMP Rota-Crimp Part# 600850 (2/0-4/0)
Fuse
Information
Bussman Part
Number
Vanner Part
Number
2100W
3200W
Bussman ANL300
Bussman ANL500
03645
03646
Fuse Holder Bussman 4164 03637