8.2.4 Update

Released October 29, 2012

• Fixed errors in Merge Project command.
• Fixed error in equipment query command that was showing incorrect circuit for the equipment connection.
• Fixed crash in Project Explorer when trying to find a panel.
• Fixed errors when creating photometric overlays for light fixtures.
• Fixed error with cable tray drafting in 3D.
• Improved one-line diagram to keep feeders between devices when they are copied.
• Significant changes to how MCA and MOCP are used to size equipment conductors and breakers.

The new options for equipment are described below. A new field, FLA / BCSC, was added. New choices for Breaker Size and Wire Size were added. These new features were added to better support NEC 430 and NEC 440.

FLA / BCSC: Full load current or branch-circuit selection current. It is used to size the breaker according to NEC 430.52 and 440.22, depending upon the Breaker Size selection. It is also used in one of the Wire Size options. (This field is new in this release.)

MCA: Minimum circuit amps. This is used to size the conductors. It is not used in any of the calculations for the breaker size. (This field previously existed.)

MOCP: Maximum overcurrent protection. Use when sizing motor-compressor breakers, but not when sizing motor breakers. (This field previously existed.)

Breaker Size: How the breaker for the equipment is sized. (This field previously existed but now has more choices.)

• Motor-Compressor, MOCP (or loads if no MOCP). Breaker will be sized to match the MOCP. The FLA / BCSC value will be ignored. If no MOCP value is specified, the breaker is sized based upon the connected load of the device.
• Motor-Compressor, 175% of FLA / BCSC, not to exceed MOCP. Breaker will be sized based upon 175% of the FLA / BCSC value. If that is larger than the MOCP, the MOCP value will be used. This is for NEC 440.22(A).
• Motor-Compressor, 225% of FLA / BCSC, not to exceed MOCP. Breaker will be sized based upon 225% of the FLA / BCSC value. If that is larger than the MOCP, the MOCP value will be used. This is for NEC 440.22(A).
• Motor, Dual Element Fuse, 175% of FLA. Breaker will be sized based upon 175% of the FLA / BCSC value. This is for NEC 430.52 dual element fuse breakers.
• Motor, Dual Element Fuse, 225% of FLA. Breaker will be sized based upon 225% of the FLA / BCSC value. This is for NEC 430.52 dual element fuse breakers exception no. 2 (b).
• Motor, Inverse Time Breaker, 250% of FLA. Breaker will be sized based upon 250% of the FLA / BCSC value. This is for NEC 430.52 inverse time breakers.
• Size based upon loads. Breaker will be sized based upon the connected load of the device.
• Specific breaker sizes. A list of all the possible breaker sizes for manually setting the breaker size.

Wire Size: How the conductors for the equipment are sized. (This field previously existed but now has more choices.)

• Motor-Compressor, MCA (or loads in no MCA). Conductors will be sized based upon the MCA. This is for NEC 440.33 and 440.35. If no MCA value is specified, the conductors are sized based upon the connected load of the device.
• Single Motor-Compressor, 125% of BCSC. Conductors will be sized based upon 125% of the FLA / BCSC value. This is for NEC 440.32.
• MOCP. Conductors will be sized based upon the MCA.
• Size based upon loads. Conductors will be sized based upon the connected load of the device.
• Specific wire sizes. A list of all possible conductor sizes for manually setting the conductor size.