GE Industrial Solutions Spectra II Series Plug-in and Feeder Busway with BlueCoat Epoxy Insulation System - Manual (Page 6)

Spectra and Spectra II Series™ Plug-In and Feeder Busway
Installing Spectra Series Busway
4
Obstructions
Where a busway run must pass through a wall or
floor, an opening one inch larger than the busway
cross-section should be provided. Joints may not
occur inside walls or floors per the NEC. A flange is
available to mask the opening after the busway is
installed.
Minimum Clearances
Figure 2 illustrates the minimum clearances that
must be maintained in various installation
situations.
 4‖ minimum provides clearance for 30–100 A fusible plugs. 7‖ minimum for 200
A fusible plugs. 8‖ minimum for all other plugs. See Tables 1, 2, and 3.
Figure 2. Minimum clearances to be maintained in various
installations.