Larson Electronics EPCO-20A Maintenance Manual

LARSON ELECTRONICS

INSTALLATION, OPERATION & MAINTENANCE DATA SHEET

READ THIS SHEET CAREFULLY BEFORE BEGINNING INSTALLATION.

WARNING: Electrical power MUST BE OFF during installation, or performing any maintenance. Disconnect primary

9419 US-HWY 175
Kemp, TX 75143 USA

EPCO-20A SERIES CONNECTOR

EPCO-20A SERIES for use in:

® Class I, Groups B, C & D; Class II, US ® Class II, Groups F* and G, Class III

Groups F* (Coal or Coke Dust) and G,

Class III

Type 3, 4 Locations, as defined by the Canadian Electrical Code and the National Electrical Code.

power source and lock out. This device must be installed by trained, qualified and competent personnel. Installation

comply with local, state and national regulations, as well as safety practices for this type of equipment.

must

FIGURE 1 General view of EPCO Series CONNECTORS

BREECH LID SHOWN

FLIP LID SHOWN

Breech - N4X when Cap Closed, N3 when in use.
Flip - N3 Hinge Up or in use.
Certified for Intermateability with Appleton® & Crouse-Hinds® plugs.
( * : F without Electrically Conductive dust)

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DIRECTIONS FOR INSTALLATION

ASSEMBLY :

1.) Disassemble the Connector assembly as shown in Figure 2. Loosen clamp guide setsc
assembly to remove from connector body. Loosen connector body setscrew and turn connector body to remove from
acceptor receptacle body.

2.) Slide clamp guide assembly, with cable clamp properly assembled, and the grommet washer over the power cable
being used. Refer to National Electrical Code Table 400-5 or Canadian Electrical Code Table 12 when selecting the
conductor size.

3.) Determine how many “inner layers” of the onion skin grommet are to REMAIN by simply removing the “inner layers”
until the grommet slips over the power cable. Remove the “inner layers” as needed from the grommet, one layer at a
time, by pushing through to solid side and tearing off. See Figure 3.

4.) Place the onion skin grommet over the power cable with the “SOLID” side facing the clamp guide assembly and slide
connector body over power cable.

5.) WIRING:
Loosen the terminal screws on the terminal base. NOTE: Use only copper wire with this device (10, 12 or 14 AWG).
Reference Figure 4 to strip the cable jacket and individual wires. Recommended conductor connection is crimp fork or
ring terminals; or loop the wires and attach them to the proper terminal screws: Green lead (Ground, if provided) to screw
at Ground strap (marked Green); White (Neutral) lead to terminal at White mark (125V. only); Black and/or Red [Line
lead(s)] to unmarked terminal(s). See Figure 5. Hand tighten terminal screws to 10 in.-lbs. of torque.

6.) Thread connector body onto Acceptor receptacle body and tighten until Acceptor gasket thickness has compressed by
at least half of its original thickness. Hand tighten connector body setscrew to 8 in.-lbs. of torque.

7.) Slide onion skin grommet dow
minimum 1/8”

strain relief in the wire between clamp and insulator. Slide grommet washer into clamp guide assembly.

n power cable into connector body. Force power cable into connector body to provide a

Screw clamp guide onto connector body.

8.) Hand tighten the clamp guide set screw to 10 in.-lbs. of torque.

9.) Hand tighten the cable clamp screws around power cable to 25 in.-lbs. minimum torque, alternating sides as needed
to prevent binding.

rew and turn clamp guide

LID ASSEMBLY or replacement

1.) Remove the existing lid ass

embly by removing the (2) #8-32 screws

holding it in place and ensure that the face of the

Acceptor receptacle is free of obstructions.

2.) Align the flat surface of the lid assembly with the flat step feature of the receptacle body and install the lid assembly to
the receptacle, as shown in Figure 2.

3.) Utilize the existing or the (2) #8-32 screws provided in the kit to secure the lid.

4.) Hand tighten the screws evenly; making sure that the inside diameter of the lid gasket seal remains circular and
undistorted.

OPERATIONAL DATA

1.) Lift receptacle door and insert plug all the way into the receptacle.

2.) Turn plug to clockwise limit (45°). This closes internal contacts and completes circuit.

3.) Release plug. Plug will move outward to “LOCK” position. Check by trying to turn plug without pushing inward; plug
should not turn.

4.) To remove plug, push plug inward and turn to counter-clockwise limit (45°). Pull plug straight out.

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FIGURE 2

FIGURE 5

▲ NOTCH allows use of screwdriver or similar item to hold lid open for “hands-free” plug insertion or removal.

WIRE RANGE AND STRIPPING GUIDE

Rated for use with TYPE S, SO, ST, STO, SOOW portable cords or
equivalent, with COPPER conductors only, of the sizes listed.

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FIGURE 6

PLUG

APPLETON

KILLARK

LARSON

CROUSE-HINDS

CONNECTOR

CONNECTOR

RATING

PLUG

PLUG

PLUG

RATING

CAT. NO.

CAT. NO.

CAT. NO.

CAT. NO.

125V, 20A, 1 hp

EPCO-20A

ENP-5151

WIRING (See Figure 6) :

1.) NOTE: Use only copper wire with this device (10, 12 or 14 AWG). Recommended wire strip length – ½ inch nominal.

Loosen all (3) Terminal Contact Screws and insert wire through the Wiring Entrance holes, into proper terminals: Green
lead (Ground) to terminal with ground mark & Green screw head; White (Neutral) lead to terminal with Silver screw head
(125V. only); Black and/or Red [Line lead(s)] to terminal(s) with Brass screw head. Hand tighten terminal screws
(recommended torque 8 in.-lbs).

TABLE 1

125V, 15A, 1 hp

UGP-15231(QW)

(E or N)CP-1523

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MAINTENANCE DATA

recommended.

These devices require no maintenance other than a periodic cleaning and a check for proper operation. Also, check cord
and fasteners for damage and/or wear. Inspections should be performed on a regular basis (minimum yearly); determined
by the environment and usage.
WARNING: Disconnect and Lock Out supply circuit before starting maintenance work.

1.) To clean receptacle, it is recommended that a soft, non-metallic bristle brush be used.

2.) Check tightness of all accessible screws.

3.) Inspect the entire assembly (including cord) for damage, wear & proper function. If necessary, consult Larson
Electronics factory for availability of replacement parts and discontinue use of the equipment until repairs are made.

An Electrical Preventive Maintenance Program, such as the National Fire Protection Association Bulletin NFPA No. 70B, is

Technical information, advice and recommendations contained in these documents is based on information that Larson Electronics believes to be
reliable. All the information and advice contained in these documents is intended for use by persons having been trained and possessing the requisite
skill and know-how and to be used by such persons only at their own discretion and risk. The nature of these instructions is informative only and does
not cover all of the details, variations or combinations in which this equipment may be used, its storage, delivery, installation, check out, safe operation
and maintenance.

There are no warranties, expressed or implied, except that all goods shall conform to their description, subject however to commercial tolerances and
variations.

All sales are made on the express understanding that there are no express warranties other than those contained in a specific agreement between
Seller and Buyer and that there are no implied warranties that the goods shall be merchantable, nor are there any warranties which extend beyond the
description on the face hereof. In the event of the breach of any warranty or alleged breach of any warranty by Larson Electronics, the Buyer shall not
be entitled to consequential or incidental damages. The obligation of Larson Electronics under its warranty shall be limited to repairing or replacing
FOB Larson Electronics' plant or allowing credit at Larson Electronics' option, any part or parts which may prove to be thus defective, provided the
Buyer(s) gives Larson Electronics prompt notice of the defect or defects. It is expressly agreed and understood that this remedy of repair or
replacement or credit at Larson Electronics' option is the exclusive remedy of the Buyer of this product.

Since conditions of use of the product are outside of the care, custody and control of Larson Electronics, the purchaser should determine the
suitability of the product for his intended use, and ass

umes all risk and liability whatsoever in connection therewith.

MAINTENANCE MANAGER: Please record the following information for your records:

COMPLETE CATALOG NO. ________________________________________________________________

(As shown on nameplate)

INSTALLED BY _________________________________________________________________________

DATE OF INSTALLATION _________________________________________________________________

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