Larson Electronics EPCO-20A Series Instruction Manual

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LARSON ELECTRONICS
9419 US-HWY 175
Kemp, TX 75143 USA
INSTALLATION, OPERATION & MAINTENANCE DATA SHEET
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.
READ THIS SHEET CAREFULLY BEFORE BEGINNING INSTALLATION.
WARNING:Electrical power MUST BE OFF during installation, or performing any maintenance. Disconnect primary
power source and lock out. This device must be installed by trained, qualified and competent personnel. Installation
must comply with local, state and national regulations, as well as safety practices for this type of equipment.
FIGURE 1 General view of EPCO Series CONNECTORS
BREECH LID SHOWN
FLIPLID SHOWN
Breech - N4X whenCapClosed, 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 setscrew and turn clamp guide
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 theonion skin grommet are to REMAIN by simply removing the “inner layers”
until the grommet slips over thepower cable. Remove the“inner layers” as needed from thegrommet, one layer at a
time, by pushing through to solid side and tearing off. See Figure 3.
4.) Place the onion skin grommet over thepower 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 thecable jacket and individual wires. Recommended conductor connection is crimp fork or
ring terminals; or loop thewires 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 tightenterminal 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 down power cable into connector body. Force power cable into connector body to provide a
minimum 1/8” strain relief in the wire between clamp and insulator. Slide grommet washer into clamp guide assembly.
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.
LID ASSEMBLY or replacement
1.) Remove the existing lid assembly 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 thelid assembly with the flat stepfeature of thereceptacle body and install the lid assembly to
thereceptacle, 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 thelid 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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FIGURE2
▲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.
FIGURE 5
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FIGURE 6
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 Brassscrew head. Hand tighten terminal screws
(recommended torque 8 in.-lbs).
TABLE 1
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
125V, 15A, 1 hp UGP-15231(QW) (E or N)CP-1523
ENP-5151
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Technical information, advice and recommendations contained in these documents is basedon informationthat Larson Electronics believes to be
reliable. All theinformation and advice contained in these documents is intended foruse by persons havingbeen trained and possessing therequisite
skill and know-how and to be usedby such persons only at their own discretionand risk. The nature of these instructions is informative only and does
not coverallof thedetails, 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 Buyerand that there are no impliedwarranties that thegoods shall be merchantable, nor are there any warranties which extend beyond the
descriptionon theface hereof. In theevent of thebreach of any warranty or alleged breach of any warranty by Larson Electronics, the Buyershall not
be entitled to consequential or incidental damages. The obligation of Larson Electronics under its warranty shall be limited to repairingor replacing
FOB Larson Electronics' plant or allowingcredit 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 thedefect or defects. It is expressly agreed and understood that this remedy of repair or
replacement or credit at Larson Electronics' optionis theexclusive remedy of the Buyerof this product.
Since conditions of use of theproduct are outsideof the care, custody and control of Larson Electronics, the purchasershould determine the
suitability of the product forhis intended use, and assumes allrisk and liability whatsoeverin connectiontherewith.
MAINTENANCE MANAGER: Please record the following information for your records:
COMPLETE CATALOG NO. ________________________________________________________________
(As shown on nameplate)
INSTALLED BY _________________________________________________________________________
DATE OF INSTALLATION _________________________________________________________________
MAINTENANCE DATA
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 theentire assembly (including cord) for damage, wear & proper function. If necessary, consult Larson
Electronics factory for availability of replacement parts anddiscontinueuse of theequipment until repairs are made.
An Electrical Preventive Maintenance Program, such as the National Fire Protection Association Bulletin NFPA No. 70B, is
recommended.
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