Appleton Appleton U-Line Contender and U-Line Factory Contender Factory Sealed 20 Amp Plugs and Receptacles, 330062-1 Instruction Sheet

330062-1

INSTRUCTION SHEET

U-LINE®, CONTENDER® U-LINE®, EFS/EFSR/ENR SERIES

Class I, Div. 1 and 2
Groups B◊, C, D

INSTALLATION AND MAINTENANCE INSTRUCTION

Class II, Div. 1 and 2
Groups F, G
Class III
Type: 3RX

APPLICATION and FEATURES:

• U-Line®/Contender® U-Line® receptacles and ECP/NCP
plugs combination are designed for use where power is to be
supplied to portable electric equipment in locations which are
hazardous due to the presence of flammable vapors and gases or
locations where damp or corrosive conditions are encountered.

• These plugs and receptacles are for 15 or 20 ampere use at 125
volts AC and 20 ampere use at 250 volts AC.

• U-Line® receptacles mount on single or double-gang EFD
series boxes. Contender® U-Line® receptacles mount on single
or double-gang EDS series boxes.

• Receptacle is grounded through and extra pole as well as
through the receptacle housing.

INSTALLATION:

ELECTRICAL WARNING
Electrical power supply must be “OFF” before and during
installation and maintenance. Failure to do so may result
in serious or fatal injuries due to electrocution.

Note: Use minimum #12 copper or copper clad building wire

1. Mount receptacle back box in desired location. If receptacle is

already mounted on the box, take out four mounting screws and
remove receptacle. Pull in power source wiring to the box,
making sure wire leads extend out of box far enough for proper
connections to be made (See Figure 2).

2. Strip insulation from power lead ½”. Connect power leads to
receptacle terminals. Wiring must comply with applicable local
codes (See Figure 3).

3. To make connections, loosen wire screws, slide stripped end
of wire into contact and tighten wire screw to 20 in-lb torque (See
Figure 4).

4. Apply a thin film of lubricant (supplied with receptacle) to the
flange. Reinstall receptacle on the flange and tighten four
mounting screws provided to 30 in-lb torque. Receptacle
assembly is now complete and power may now be turned on.

Retain this instruction sheet for future reference.

For Convenience…ECP InterchangerTM Plug fits
ordinary location receptacles (NEMA 5-20 or 15
NEMA 620) and explosion proof U-Line®
Receptacle as well as Killark® “UGR” Series and
Crouse-Hinds® “ENR” Series.

Figure 2

Grounded White Lead
connection for 125V, Black
Lead connection for 250V

Note: For 250V, there are 2 blacks wires, connect
one to black lead and other to indicated white lead
as shown.

Figure 1A

Figure 1B

Figure 3

Black Lead
Connection

ESG Electrical Group • 800-621-1506 • www.appletonelec.com Rev. A 02/18/09 Page 1

The mating flat flange surfaces on both receptacle and
back box are explosion-proof surfaces. Surfaces are not to
be scratched and MUST be clean and flat before assembly.
Gaskets, paint, or any other similar material must NOT be
used in this joint.

OPERATION:

The U-Line®/Contender U-Line® receptacle is dead-front
construction. Electrical connection between it and ECP/NCP plug
is accomplished after plug fully inserts into receptacle and rotate
clockwise.

1. Lift receptacle door and locate polarization on mating plug pin
and receptacle face. Insert plug straight all the way into receptacle
until it can not go further (see figure 5).

2. Rotate plug clockwise limit (37º), this closes internal contacts
and completes circuit. This also mechanically locks plug into
receptacle so it cannot be pulled out.

3. To remove plug, push plug inward and turn to counterclockwise,
pull plug straight out.

MAINTAENANCE:

Electrical and mechanical inspection of all components must be
performed on a regularly scheduled basic, determined by the
environment and frequency of use. It is recommended that
inspection be performed a minimum of once a year.

WARNING
Electrical power supply must be “OFF” before and during
installation and maintenance. Installation and
maintenance procedure must be performed by a trained
and competent electrician.

WARNING
If any parts of the receptacle or plug appear to be missing,
broken, or show signs or damage, DISCONTINUE USE
IMMEDIATELY. Replace with the proper replacement
part(s) before continuing service.

1. Inspect all contact wire terminals for tightness. Discoloration
due to excessive heat is an indicator of a possible problem and
should be thoroughly investigated and repaired as necessary.

2. Inspect contacts for signs of wear and replace if necessary.

3. Clean exterior surfaces making sure nameplates remain legible.

4. Check tightness of all screws before using.

CAUTION

125 V 250 V

EFSR-2023
EFSR-2023K
EFSR-2023M
ENR5201
ULINE3RXKIT ULINE3RXKIT Screw cover kit
ULSCM ULSCM Flip cover & ring kit, malleable iron.
ULSCA ULSCA Flip cover & ring kit, aluminum.
59308097000 59308097000 Receptacle gasket

Catalog No. Description

Replacement Parts

EFSR-20232 Receptacle cover (aluminum).

EFSR-20232K Receptacle for use on Killark SWB boxes

EFSR-20232M Receptacle cover (malleable iron)
ENR6202 Contenter® receptacle cover (aluminum)

Figure 4 (mounting receptacle onto back box with
hinge in UP position)

Figure 5 - Plug Inserts In Receptacle

Figure 6
Receptacle
Cover

Page 2 330032-1 Rev. A 02/18/09 ESG Electrical Group • 800-621-1506 • ww.appletonelec.com

Dimensions: U-Line® EFS Receptacle and ECP/NCP Plugs

Single Gang Box Double Gang Box

ECP/NCP Plugs

U-Line® EFS Receptacle Catalog Number
Aluminum Receptacle and Malleable Iron Mounting Box ◊ Malleable Iron Receptacle and Mounting Box

Class I, Groups C & D, Class II, Group F, G, Class III Class I, Groups C & D, Class II, Groups F, G Class III
Suitable for Group B when external seals are used. Suitable for Group B provided external seals are used.

Single Gang-Factory Seal
Type Hub Size 125V 250V 125V 250V

Dead-End ½ EFS150-2023 EFS150-20232 EFS150-2023M EFS150-20232M
¾ EFS175-2023 EFS175-20232 EFS175-2023M EFS175-20232M
1 EFS110-2023 EFS110-20232 EFS110-2023M EFS110-20232M
Feed-Thru ½ EFSC150-2023 EFSC150-20232 EFSC150-2023M EFSC150
¾ EFSC175-2023 EFSC175-20232 EFSC175-2023M EFSC175-20232M
1 EFSC110-2023 EFSC110-20232 EFSC110-2023M EFSC110-20232M

Two Gang-Factory Seal

Class I, Group C and D, Class II, Group F, G, Class III Class I, Group C and D, Class II, Group F, G, Class III
Dead-End ½ EFS250-2023 EFS250-20232 EFS250-2023M EFS250-20232M
¾ EFS275-2023 EFS275-20232 EFS275-2023M EFS275-20232M
1 EFS210-2023 EFS210-20232 EFS210-2023M EFS210-20232M
Feed-Thru ½ EFSC250-2023 EFSC250-20232 EFSC250-2023M EFSC250-20232M
¾ EFSC275-2023 EFSC275-20232 EFSC275-2023M EFSC275-20232M

1 EFSC210-2023 EFSC210-20232 EFSC210-2023M EFSC210-20232M

-20232M

Malleable Iron Receptacle and Mounting Box With Factory Sealed Chamber

Class I, Groups B, C & D, Class II, Groups F, G Class III
No external seals required.

Single Gang-Factory Seal
Type Hub Size 125V 250V

Dead-End ½ EFSB150-2023M EFSB150-20232M
¾ EFSB175-2023M EFSB175-20232M
Feed-Thru ½ EFSCB150-2023M EFSCB150-20232M
¾ EFSCB175-2023M EFSCB175-20232M

Rating Notes:

1. ◊ Single gang aluminum EFSR receptacle cover and malleable iron EFD box suitable for Class I, Div. 1, Group B when

external seals are used (seals must be placed adjacent to each conduit entrance).

2. Single gang malleable iron EFSR receptacle and mounting EFD box suitable for Group B, no external seals required
when using with sealing chamber.

3. TYPE 3RX when the screw cover is installed and the cover is fully engaged. Apply lubricant provided in the bag on the
cover and all flanges to keep water out.
Ordering Notes:
For aluminum box and receptacle cover, add suff

ix A (For Ex: Cat# EFS150-2023A).

Page 3 330062-1 Rev. A 02/18/09 ESG Electrical Group • 800-621-1506 • ww.appletonelec.com

Dimensions: Contender® U-Line® ENR Receptacle

UNILET

TYPE

1-GANG 1 6.17(15.7) 7.03(17.9) 1(2.5) 2-GANG 1 6.17(15.7) 7.03(17.9) 1(2.5)

3/4 6.06(15.4) 6.81(17.3) 0.88(2.2) 1/2 & 3/4 6.06(15.4) 6.81(17.3) 0.88(2.2)

1/2 6.06(15.4) 6.81(17.3) 0.75(1.9)

HUB SIZE

(IN) A"(cm) B"(cm) C"(cm)

UNILET

TYPE

HUB SIZE

(IN) A"(cm) B"(cm) C"(cm)

Contender® U-Line® ENR Receptacle Catalog Number

Aluminum Receptacle and Malleable Iron Contender Series Mounting Box

Class I, Groups C & D, Class II, Group F, G, Class III

Single Gang-Factory Seal

Dead-End ½ ENR11201 ENR11202
¾ ENR21201 ENR21202

1 ENR31201 ENR31202
Feed-Thru
¾ ENRC21201 ENRC21202

Double Gang-Factory Seal

Class I, Groups C & D, Class II, Group F, G, Class III

Dead-End ½ ENR12201 ENR12202
¾ ENR22201 ENR22202

Feed-Thru
¾ ENRC22201 ENRC22202

Rating Notes:

TYPE 3RX when the screw cover is installed and the cover is fully engaged. Apply lubricant provided in the bag on the
cover and all flanges to keep water out.

Ordering Notes:

Standard U-Line Contender catalog includes aluminum ENR receptacle and malleable iron EDS box. For aluminum box
and receptacle cover, add suffix SA (For Ex: Cat# ENR11201SA)

½ ENRC11201 ENRC11202

1 ENRC31201 ENRC31202

1 ENR32201 ENR32202

½ ENRC12201 ENRC12202

1 ENRC32201 ENRC32202

Retain this instruction sheet for future reference.

Page 4 330062-1 Rev. A 02/18/09 ESG Electrical Group • 800-621-1506 • www.appletonelec.com

U-Line® Intermateability Chart

The Appleton “ECP” Model “D” Plug and “EFS” and “ENR” Receptacles are UL Listed Combinations. The Appleton “ECP” Model “D” Plug with
Killark® UL Listed “UGR” Series Receptacles or with Crouse-Hinds® UL Listed “ENR” Series Receptacles are UL Classified Combinations.

Contender
Appleton Model D U-Line
Plug Appleton Plug Receptacle Receptacle Receptacle Receptacle Receptacle Conduit Size, No. of
Rating Cat. No. Rating Cat. No. Cat. No. Cat. No. Cat. No. Openings In. Gangs

125V,15A,1HP ECP-1523 125V,20A,1HP EFSR-2023 ENR-5201 UGR0-20231 ENR-5201 – – –

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFS150-2023 ENR-11201 UGR1-20231 ENR-11201 1 1/2 1

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFS175-2023 ENR-21201 UGR2-20231 ENR-21201 1 3/4 1

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFS110-2023 ENR-31201 UGR3-20231 ENR-31201 1 1 1

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFSC150-2023 ENRC-11201 UGR4-20231 ENRC-11201 2 1/2 1

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFSC175-2023 ENRC-21201 UGR5-20231 ENRC-21201 2 3/4 1

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFSC110-2023 ENRC-31201 UGR6-20231 ENRC-31201 2 1 1

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFS250-2023 ENR-12201 UGR7-20231 ENR-12201 1 1/2 2

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFS275-2023 ENR-22201 UGR8-20231 ENR-22201 1 3/4 2

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFS210-2023 ENR-32201 UGR9-20231 ENR-32201 1 1 2

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFSC250-2023 ENRC-12201 UGR10-20231 ENRC-12201 2 1/2 2

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFSC275-2023 ENRC-22201 UGR11-20231 ENRC-22201 2 3/4 2

125V,20A,1HP ECP-2023

125V,15A,1HP ECP-1523 125V,20A,1HP EFSC210-2023 ENRC-32201 UGR12-20231 ENRC-32201 2 1 2

125V,20A,1HP ECP-2023

250V,20A,2HP ECP-20232 250V,20A,2HP EFSR-20232 ENR-6202 UGR0-20232 ENR-6202 – – –

250V,20A,2HP ECP-20232 250V,20A,2HP EFS150-20232 ENR-11202 UGR1-20232 ENR-11202 1 1/2 1

250V,20A,2HP ECP-20232 250V,20A,2HP EFS175-20232 ENR-21202 UGR2-20232 ENR-21202 1 3/4 1

250V,20A,2HP ECP-20232 250V,20A,2HP EFS110-20232 ENR-31202 UGR3-20232 ENR-31202 1 1 1

250V,20A,2HP ECP-20232 250V,20A,2HP EFSC150-20232 ENRC-11202 UGR4-20232 ENRC-11202 2 1/2 1

250V,20A,2HP ECP-20232 250V,20A,2HP EFSC175-20232 ENRC-21202 UGR5-20232 ENRC-21202 2 3/4 1

250V,20A,2HP ECP-20232 250V,20A,2HP EFSC110-20232 ENRC-31202 UGR6-20232 ENRC-31202 2 1 1

250V,20A,2HP ECP-20232 250V,20A,2HP EFS250-20232 ENR-12202 UGR7-20232 ENR-12202 1 1/2 2

250V,20A,2HP ECP-20232 250V,20A,2HP EFS275-20232 ENR-22202 UGR8-20232 ENR-22202 1 3/4 2

250V,20A,2HP ECP-20232 250V,20A,2HP EFS210-20232 ENR-32202 UGR9-20232 ENR-32202 1 1 2

250V,20A,2HP ECP-20232 250V,20A,2HP EFSC250-20232 ENRC-12202 UGR10-20232 ENRC-12202 2 1/2 2

250V,20A,2HP ECP-20232 250V,20A,2HP EFSC275-20232 ENRC-22202 UGR11-20232 ENRC-22202 2 3/4 2

250V,20A,2HP ECP-20232 250V,20A,2HP EFSC210-20232 ENRC-32202 UGR12-20232 ENRC-32202 2 1 2

®

U-Line® Killark Crouse-Hinds No. of Hub

®

Page 5 330062-1 Rev. B 06/05/09 ESG Electrical Group • 800-621-1506 • ww.appletonelec.com