TriStar MPPT 600V Installation & Operation Manual

27TriStar MPPT 600V Operator’s Manual
Step 6 - Power Connections
NOTE:
To comply with the NEC, the TriStar MPPT 600V must be installed using wiring methods in
accordance with the latest edition of the National Electric Code, NFPA 70.
REMARQUE :
Pour la conformité CNE, le TriStar MPPT doit être installé selon des méthodes de câblage
conformes à la dernière édition du Code électrique national, NFPA 70.
Wire Size
The four large power terminals are sized for 14 - 2 AWG (2.5 - 35 mm
2
) wire.* The terminals are
rated for copper and aluminum conductors.** Use only UL-listed Class B 300 Volt stranded wire
for battery connections. Good system design generally requires large conductor wires for the
solar and battery connections that limit voltage drop losses to 2% or less. The wire tables in the
appendix on pages 77-80 provide wire sizing information for connecting the solar array and bat-
tery bank to the TriStar MPPT 600V with a maximum of 2% voltage drop.
Minimum Wire Size (Field Wiring Connections Only)
The NEC requires that the wires carrying the system current never exceed 80% of the conduc-
tor's current rating. Table 3.2 below provides the minimum size of copper wire for battery output
connections allowed by NEC for both TriStar MPPT 600V models when the output current equals
the full nameplate rating. Wire types rated for 75°C and 90°C are included.
* The TS-MPPT-60-600V-48-DB comes pre-wired with #6 AWG copper wire. If replacement is
required, do not exceed #6 AWG wire.
** The TS-MPPT-60-600V-48-DB comes pre-wired with #6 AWG copper wire. If replacement is
required, use only copper conductors.
Wire Type 75°C Wire 90°C Wire
Copper 4 AWG (35 mm
2
) 6 AWG (25 mm
2
)
Aluminum 2 AWG (35 mm
2
) 4 AWG (35 mm
2
)
Table 3-2 Minimum Output Wire Sizes