Instruments in Divison 2: Hot Work Permit Required, Division 2 Wiring

1. Trunk: Division 2 wiring methods as defined in NEC501, which relates to mechanical protections
2. Spurs: Division 2 wiring methods as defined in NEC501, which relates to mechanical protections
3. Instruments: manufacturer control drawing defines the installation
    

Many fieldbus applications require the device couplers and field devices to be installed in a Division 2 area. Division 2 certified field devices connected to a Segment Protector fit this application, but a hot work permit is required to work on installation or instrument.