INSTALLATION | Installation of SPMC models
Doc #OI0003 Part #004122 Rev 04 2010
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DC Wiring
The SP PRO does NOT contain an internal fuse or DC breaker. The DC wiring must be fitted with appropriate
fusing or circuit breakers.
The fuse or circuit breaker must be located in a user accessible position and be in close proximity to the
battery system. The battery system must not be accessible by the user.
There are four DC wiring connections that should be made. B+ and B-, pre charge and optional mid point
monitoring. DC wiring should be fed up through the appropriate gland and terminated into the correct
terminals. Connect the battery negative lead with the insulation stripped back 28 mm to the SP PRO’s Battery
Negative screw terminal. Tighten the hex screw with the Allen key provided. Repeat the same process with the
positive battery lead.
Copper wiring must be used through out
Multiple Hazardous Energy Sources
DC wiring is fed from multiple sources including internal capacitors. Care must be taken to
ensure that under no circumstances can the user access or touch wiring even after the operation
of external circuit breakers or fuses assemblies.
AC Wiring
The AC cabling should be sized according to maximum demand through (consumed by the AC Load) and
consumed by the SP PRO (consumed by the charging of batteries). The SP PRO is fitted with 63A circuit
breakers which are suitable for accepting up to 25 mm
2
cables. The 63 A circuit breakers will protect 16 mm
2
cables but additional external protection must be provided if a lighter duty cable is used.
AC wiring should be fed up through the appropriate gland and terminated to the SP PRO.
Connect the AC load wiring to the SP PRO: earth stripped back 16 mm to the load earth terminal, neutral and
active stripped back 12 mm to the Load Circuit Breaker.
Connect the AC source wiring to the SP PRO: earth to the AC Source earth terminal, neutral and active to the
AC Source Circuit Breaker.
Copper wiring must be used though out.
Multiple Hazardous Energy Sources
AC wiring is fed from multiple sources. Care must be taken to ensure that under no
circumstances can the user access or touch wiring even after the operation of external circuit
breakers.
Earth Wiring
The inverter shall be earthed to the installations Earth system. A minimum copper earthing conductor of 6 mm
2
shall be used. For further information see AS3000 Table 5.1 – Earthing conductor size.
Earth the inverter by connecting earth wiring from the switchboard to the inverter Earth terminal. The SP PRO is
suitable for Multiple Earth Neutral systems.
Copper wiring must be used through out.
