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DC
• Use crimped and sealed copper ring terminal lugs with 5/16” (.79 cm) hole or compression-type lug
to connect battery cables to DC terminals. Soldered cable lugs are also acceptable.
• Use recommended cable sizes (see page 51) to reduce losses and ensure high performance of FX
(smaller cables can reduce performance and possibly damage the unit).
• Keep cables together (e.g., using a tie-wrap) as much as possible.
• Ensure cables pass through the same knockout and conduit ttings to allow inductive currents to
cancel.
TORQUE REQUIREMENTS
CONNECTION TORQUE IN POUNDS/Nm
AC and PV breakers to 22 inch-lbs/2.48 Nm
DC shunt to 15 foot-lbs/20.4 Nm
DC battery connections to 10 foot-lbs/13.6 Nm
FX’s DC terminals to 5 foot-lbs/3.38 Nm
FX’s AC terminals to 30 inch-lbs/3.38 Nm
Table 1 Torque Values for Installation