Appleton EFS SERIES, EFSR SERIES, ENR SERIES Instruction Sheet

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

Figure 1A

APPLICATION and FEATURES:

•U-Line®/Contender® U-Line® receptacles and ECP/NC
ugs combination are designed for use where power is to be

pl
supplied to portable electric equipment in locations which
hazardous
lo

cations where damp or corrosive conditions are encountered.

• These

vol

•U-Line® receptacles mount on single or double-gang EF

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

• Receptacle is grounde

through the receptacle housing.

INSTALLATION:

due to the presence of flammable vapors and gas

plugs and receptacles are for 15 or 20 ampere use at

ts AC and 20 ampere use at 250 volts AC.

d through and extra pole as well as

P

are

es or

125

D

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.

330062-1

Figure 1B

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

receptacle back box in desired location. If recept

Mount

1.

al

ready mounted on the box, take out four mounting screws an

rem

ove receptacle. Pull in power source wiring to the box

m

aking sure wire leads extend out of box far enough for prope

con

nections to be made (See Figure 2).

2.Strip insulation from power lead ½”. Connect power leads to

receptacle terminals. Wiring must comply with applicab
codes (See Figure 3).

3. To make connections, loosen wire screws, slide stripped end
wire into contact and tighten wire screw to 20 in-lb torque

of

gure 4).

Fi

4.

Apply a thi
flange.
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.

n film of lubricant (supplied with receptacle) to

Reinstall receptacle on the flange and tighten four

acle is

d

,

r

le local

(See

the

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 3

Black Lead
Connection

Rev. A 02/18/09 Page 1

CAUTION
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.

receptacle door and locate polarization on mating plug pi

Lift

1.

receptacle face. Insert plug straight all the way into rece

and
u

ntil it can not go further (see figure

2. R

otate plug clockwise limit (37º), this closes internal cont

d completes circuit. This also mechanically locks plug into

an

5).

n

ptacle

acts

receptacle so it cannot be pulled out.

3. To remove plug, push plug inward and turn to counterc
l plug straight out.

pul

lockwise,

MAINTAENANCE:

Electrical and mechanical inspection of all components must

formed on a regularly scheduled basic, determined by th

per

ronment and frequency of use. It is recommended that

envi

be

e

inspection be performed a minimum of once a year.

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

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. Discolorati

ue to excessive heat is an indicator of a possible problem an

d
sho

uld be thoroughly investigated and repaired as necessary

2. Ins

pect contacts for signs of wear and replace if necessa

lean exterior surfaces making sure nameplates remain legible.

3. C

ry.

4.Check tightness of all screws before using.

Replacement Parts

Catalog No. Description

125 V 250 V

on

Figure 5 - Plug Inserts In Receptacle

d

.

EFSR-2023
EFSR-2023K
EFSR-2023M
ENR5201

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)

ULINE3RXKIT ULINE3RXKIT Screw cover kit
ULSCM ULSCM Flip cover & ring kit, malleable iron.
ULSCA ULSCA Flip cover & ring kit, aluminum.
59308097000 59308097000 Receptacle gasket

Page 2 330032-1 Rev. A 02/18/09

Figure 6
Receptacle
Cover