Cut Sheet

Electrical Metallic Tubing (EMT) Fittings
Series 5123 Insulated
EMT Connector (Raintight)
(Compression Type)
Series 5120
EMT Coupling (Raintight)
(Compression Type)
Series 4176
Pipe Straps
Series 1350
Pipe Spacers
Series 106
Bonding Locknut
Series TK121-E
EMT Coupling (Concrete tight)
(Set Screw Type)
Series HT-221
Combination Coupling
(Concrete tight) Rigid/IMC to EMT
(Set Screw Type) Zinc Die Cast
• Ferrous Electrical Metallic Tubing (EMT)
shall be of the hot dipped galvanized type
conforming to applicable specifications
WW-563/ANSI C33.98/ANSI C80.3/UL 797/
CSA C22.2 No. 83. E.M.T. protected solely
by enamel shall not be used
• Where lengths of EMT are coupled together
or connected to boxes or enclosures or where
EMT is coupled to threaded rigid metal
conduit or IMC, fittings approved for
intended applications shall be used, and:
(1) Shall be of rugged steel/malleable
iron construction electro zinc plated
inside/outside including threads.
Connector throat shall be bushed
with a nylon insulator
(2) Shall be of raintight type for installations
exposed to weather or wet locations such
as Thomas & Betts series TC112A-RT
and TK112A-RT
(3) Shall be of concrete tight type for
installations in poured concrete such
as Thomas & Betts series TC121, TC721,
or TK121, 5123, 5120, and 530
• Raintight type fittings may be substituted
for concrete tight application.
• Where electrical metallic tubing and
associated fittings are used as part
of equipment grounding system:
(1) A bonding type locknut such as Thomas
& Betts series 106 shall be installed
where hub type fitting terminates
into a threadless opening
(2) Compression ring type fittings such as
Thomas & Betts series 5123 and 5120
shall be used for terminating and coupling
• EMT shall be securely fastened in place at
intervals as specified by the code using straps,
hangers and other supporting assemblies as
indicated on plans, and as manufactured by
Thomas & Betts, series 4176 straps. In wet
locations or where supporting surfaces are
of absorbent materials vertical and horizontal
runs of conduit shall be firmly supported such
that there is at least
1
⁄4" air space between
conduit and supporting surface
• Spacers and supporting straps shall be of
rugged malleable iron or steel construction
hot dipped galvanized and conforming to
requirements of Canadian Standards
Association Standard C22.2 No. 18 as
manufactured by Thomas & Betts, series
4176 straps and series 1350 spacers
Suggested Specifications for Electrical
Metallic Tubing (EMT) Fittings
A-100
United States
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