Graphics Programs Reference
In-Depth Information
Figure 13.16 Disconnect switches in the building model
When a point of disconnect is required to be shown on the electrical plan
but no equipment needs to be provided, a symbol can be used similar to the
equipment connection symbol. There is no need for an electrical connector
in your disconnect symbol family because a disconnect switch carries no
load. However, wiring home runs for equipment are typically shown from
the disconnect point, so you may want to include a connector point in your
disconnect family for attaching wiring, or the wiring can be connected to the
load source but drawn from the disconnect switch symbol.
Connectors
Families that have connectors can be assigned to engineering systems.
Having many components in your model that have not been assigned to
systems may lead to poor file performance.
Figure13.17 showsapointofdisconnectforavariableairvolume(VAV)box.
The electrical connector is in the VAV family, so the point of disconnect is
represented as a symbol. As with the equipment connection, the disconnect
symbol can be constrained to the equipment to provide coordination with
changes to the model as long as the equipment family is in the same file.
 
 
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