Cut Sheet

Service Entrance Cable Fittings
All service fittings shall be approved for the purpose by a nationally
recognized testing laboratory, inspection agency or product
evaluation organization.
Where service raceway consists of a rigid metal conduit, intermediate
metal conduit, electrical metallic tubing or where service entrance
cable is used as service conductors, a suitable rain tight service
head conforming to Federal Standard W-C-586 shall be provided.
Suggested Specifications for
Service Entrance Fittings
Fastening
Service raceway shall be securely
fastened in place to the supporting
surface at intervals as specified by
the Code using suitable straps and
spacers; straps and spacers shall
be of malleable iron or steel
construction, hot dipped galvanized
or electro zinc plated conforming
to Canadian Standards Association
Standard C22.2 No. 18 and as
manufactured by Thomas & Betts:
series 1275 or 4175 straps and
series 1350 spacers; aluminum
straps or spacers such as series
1275AL and series 1350AL may
be substituted when installed in
environmental conditions that are
more than normally corrosive.
Grounding & Bonding
For grounding and bonding of
service raceway, end of raceway
or the terminating fitting shall be
equipped with bonding locknuts
and insulated metallic grounding
and bonding bushing as required.
Bonding locknuts shall be of
hardened steel or malleable iron
construction, electro zinc plated,
and provided with hardened
bonding screws as manufactured
by Thomas & Betts, series 106
bonding locknuts.
Insulated metallic grounding and
bonding bushing shall be of
malleable iron/steel construction,
electro zinc plated and assembled
with an insulator listed or certified
for 150° C/302° F service as
manufactured by Thomas & Betts,
series 3870.
Threaded Rigid Metal
Where threaded rigid metal service
raceway enters the building, the
raceway shall be equipped with
a cast malleable iron/copper-free
aluminum entrance ell suitably
bushed with a burr-free end
stop and taper tapped holes as
manufactured by Thomas & Betts,
series 1490.
Series 4175
Pipe Strap (EMT)
Series 1275/1275AL
Pipe Strap (Rigid Metal Conduit & I.M.C.)
Series 1350/1350AL
Pipe Spacer
(Rigid Metal Conduit I.M.C. & EMT)
Series 3870
Bonding & Grounding Bushing — Insulated
Series 106
Bonding Locknut
Series 1490
Entrance ELL
A-150
United States
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