Cut Sheet

Controls
NEC/CEC CLASS/ZONE RATED HAZARDOUS LOCATION CONTROL STATIONS AND SWITCHES
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© May 2014
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EFD Cast Device Box Ordering Information
Blank Bodies for Brazed Threaded Hubs
1-, 2-, 3-, 4- and 5-Gang Boxes. Brazed Threaded Hubs for Rigid Conduit, 1/2” thru 1”; Brazed Union Hubs, 1/2” thru 1”.
Determine catalog number as follows:
(1) Select EFD device box catalog number;
(2) Select “Standard Hub Arrangement
Diagram” number; and
(3) Select symbols that represent hub
sizes from “Symbol Table.” (Use “0”
where no hub is required, and separate
the various divisions of the complete
catalog number by dashes.)
Example
The blank body device box selected is
EFD3NL and the hub arrangement is
diagram #8. Hub “a” is to be 3/4” brazed
threaded; hub “b”, 1” brazed threaded;
hub “c”, 3/4” brazed threaded; hub “d”,
no hub is required; and hub “e”, 1” brazed
union.
The complete catalog number will be:
EFD–3NL–8–23203E
If a “Standard Hub Arrangement” is not
suitable for the application, or when hubs
are to be more accurately spaced, submit
sketch locating hubs (1) from centerlines
of walls and (2) from outside back of box
(or from mounting lug surface if lugs are
supplied).
All hubs will be located in centerlines of
walls and evenly spaced unless
otherwise specified.
Standard Hub Arrangement Diagrams
Hub “a” is always TOP of box
2-, 3-, 4- and 5-Gang (Front View)
Symbol Table
Hub Size
(Inches)
Brazed
Threaded Hub
Symbol
Brazed Union
Hub Symbol
Blank 0 0
1/2 1 1E
3/4 2 2E
133E
1-Gang (Front View)