Installation Manual

BI 7.2.3-44
June 2018, Rev 4
9
Single Romex:
-3/4" EMT QBox Conduit Nipple
-3/4" EMT to 3/4" NPT threaded coupler (Arlington PN 2411)
-3/4” to 1/2” Reducing Bushing (Halex #91321)
-1/2” Knockout NM tting (Halex #20511)
-Single NM Wire
Typical Hardware:
With the 3/4" EMT to 3/4" NPT
threaded coupler (Arlington PN
2411), typical 3/4" knockout
ttings can be used. With the
addition of the 3/4” to 1/2”
Reducing Bushing (Halex #91321),
1/2" knockout ttings can be
used.
Transition to building wiring: If you are using the attic exit, several inches of 3/4" EMT QBox conduit nipple will be visible in
the attic. A number of options exist to transition from the 3/4" EMT QBox conduit nipple to the building wiring. By using a
3/4" EMT to Rigid threaded coupler, as well as a 3/4" to 1/2" threaded reducer, many standard 3/4" and 1/2" knockout ttings
can be be utilized to transition to NM, MC, Flex, etc. The following are some possible congurations. Part numbers are given
for reference purposes only. All ttings must be listed for the use, and the installation must meet all NEC guidelines.
ITEMDESCRIPTION
SUPPORTED
WIRETYPES
HOME DEPOT
Brand / Part #
ARLINGTON
PART
NUMBER
BRIDGEPORT
PART
NUMBER
3/4"EMTto3/4"RigidCoupler N/A N/A 2411 N/A
3/4"EMTto1/2"RigidCoupler N/A N/A 2410 N/A
3/4"to1/2"ReducingBushing N/A HALEX/91321 522 1161
3/8"(1/2"KO)SingleNM NM HALEX/20511 841 651-DC2
3/4"SingleNM NM HALEX /20512 842 670-DC2
3/8"(1/2"KO) Single MC NM/MC/AC/FMC HALEX /20670 SG38 570-DC2
3/4"SingleMC MC/AC/FMC N/A SG75 572-DC2
3/8"(1/2"KO) Duplex NM/MC/AC/FMC HALEX/21580 846 601-DC2
3/4"Duplex NM/MC/AC/FMC N/A N/A 621-DC2
1/2"FMC FMC HALEX /20440 GF-50 520-DC2
3/4"FMC FMC HALEX /20442 GF-75 521-DC2
1/2"Liquid-tight LT RACO/3402-8 LT50 430-LT2
3/4"Liquid-tight LT RACO/3403-8 LT75 431-LT2
3/4"EMTto3/4"EMTCoupler N/A HALEX/26282 811 241
Table for reference purposes only. Installer must verify appropriate cable type/gauge for application.
Single MC:
-3/4” EMT QBox Conduit Nipple
-3/4” EMT to 3/4” NPT threaded coupler (Arlington #2411)
-3/4” to 1/2” Reducing Bushing (Halex #91321)
-1/2” Knockout MC tting (Halex #20670)
-Single MC cable
3/4" EMT:
-3/4” EMT QBox Conduit Nipple
-3/4” EMT to 3/4” EMT coupler (HALEX # 26282)
-3/4” EMT
3/4” Flexible Metal Conduit:
-3/4” EMT QBox Conduit Nipple
-3/4” EMT to 3/4” NPT threaded coupler (Arlington #2411)
-3/4” Knockout Flex tting (Halex #20442)
-3/4” Flexible Metal Conduit
Double MC:
-3/4” EMT QBox Conduit Nipple
-3/4” EMT to 3/4” NPT threaded coupler (Arlington #2411)
-3/4” to 1/2” Reducing Bushing (Halex #91321)
-1/2” Knockout duplex tting (Halex #21580)
-Double MC
3/4" Liquid Tight:
-3/4” EMT QBox Conduit Nipple
-3/4” EMT to 3/4” NPT threaded coupler (Arlington #2411)
-3/4” Knockout Liquid Tight tting (Raco #3403-8)
-3/4” Liquid Tight Conduit
Double Romex:
-3/4” EMT QBox Conduit Nipple
-3/4” EMT to 3/4” NPT threaded coupler (Arlington #2411)
-3/4” to 1/2” Reducing Bushing (Halex #91321)
-1/2” Knockout NM tting (Halex #20511)
-Double NM Wire