Motor Control Centers
Fix cross-reference slug: building-automation -> building-automation-system
Showing changes from Rev 3
to Rev 4
in Motor Control Centers.
Tag changes
−Electrical−Industrial−Low Voltage−Motor Control Centers−Motor Controls−Motor Starters
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title: Motor Control Centers
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### Unit-mounted control transformers shall be sized for the connected pilot device load plus 50% spare capacity, with primary and secondary fusing per NFPA 70 Article 450.
−### Common 24V DC control buses are preferred where the MCC integrates with a PLC or DCS using 24V DC field devices; coordinate the control voltage selection with [[sync/building-automation]] or the process control standard.
+### Common 24V DC control buses are preferred where the MCC integrates with a PLC or DCS using 24V DC field devices; coordinate the control voltage selection with [[sync/building-automation-system]] or the process control standard.
## Variable Frequency Drive Units {toc}
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### For typical commercial HVAC service, a single network with unmanaged switches is sufficient. {note}
−### Coordinate the communications network design with [[sync/building-automation]] and with the building's overall converged network architecture.
+### Coordinate the communications network design with [[sync/building-automation-system]] and with the building's overall converged network architecture.
# Finish and Identification {toc}
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## Spare units shall be stored in a manufacturer-provided storage cabinet or on shelving in the electrical room or motor control room, organized and labeled by unit designation.