Hubbell HBL420MI7WRC, HBL420MI7W Installation Manual

HUBBELL CIRCUIT -LOCK

U.S. Patent No. 5,298,701

GENERAL INFORMA TION

1. NOTICE: For installation by a qualified electrician in

accordance with national and local electrical codes and
the following instructions.

2. CAUTION: RISK OF ELECTRIC SHOCK. Disconnect
power before installing. More than one disconnect
switch may be required to de-energize this
equipment before servicing. Disconnect ALL
power supplies to enclosure before exposing
interior.

3. NOTICE: Separate overcurrent protection must be

provided in accordance with National Electrical Code
Article 220 or Canadian Electrical Code, Section B, as
appropriate. Overcurrent protection MUST NOT exceed
the ampere rating of the receptacle [ref.: National
Electrical Code® section 430-42(c) or Canadian
Electrical Code, Part 1, Rule 28-602(3)(c)(i)].

4. Suitable for use on a circuit capable of delivering not
more than 10,000 rms symmetrical amperes at the
voltage rating of the receptacle.

5. This enclosure includes a lockout provision to isolate
the receptacle and connected equipment from the
power supplied to the enclosure as a method of
compliance to OSHA Lockout/Tagout Regulation 29,
CFR Part 1910.147. The ON-OFF control knob (in the
OFF position) accepts up to 5/16 inch (8 mm)) diameter
shackle of a suitable padlock or Lockout device. This
feature does NOT isolate the power supplied to the
enclosure during internal servicing of the enclosure.

6. NOTICE: This enclosure must NOT be used as a
junction box for feed-through connections.

7. WARNING: RISK OF ELECTRIC SHOCK. Bonding
between conduits must be provided.

A.Mounting Instructions:

1. This enclosure must always be mounted vertically with receptacle end down.

2. This enclosure may be mounted for top, bottom or back conduit entrances. Bottom feed is recommended whenever possible,
Fig M1. Back feed is permitted in Type 4X applications only. Fig. M3.

3. For Type 4X and T ype 12 applications, enclosure must be mounted by means of mounting feet. DO NOT drill, punch or nail
mounting holes through the enclosure.

4. Mount the feet to the enclosure using the screws provided. Tighten to 10-12 lb•in (1.2 - 1.4 N•m).

5. Mounting feet will accept up to 5/16 inch (8 mm) diameter screws (not provided). Mounting pattern is shown in Fig. M1.

6. Remove the four (4) cover mounting screws and remove cover. Switch handle must be in “OFF” position to remove cover.

7. Drill or punch hole at the desired conduit entry location:
a. 1-3/8 inch (34.9 mm) diameter for 1 inch trade size conduit hub.
Molded drill spots on the outside top, bottom and back surface show the locations. Fig. M3.

TM

English

20 AMP PIN & SLEEVE MECHANICAL INTERLOCK

BOTTOM FEED

(RECOMMENDED METHOD OF ENTRY)

OPTIONAL

CENTER

LOCATION

FOR 3 POINT

MOUNTING

Dimensions in inches [mm]

6.87

[174.50]

4.75

[120.65]

•

®

11.00

[279.40]

10.12

[257.05]

GROUNDING

(BONDING)

PLATE

•

•

•

7.75

[196.85]

FIG. M1 • 20 AMP

•

8.00

[203.20]

UNIT RATING

MOUNTING FEET

ADJUST TO ANY 1

OF 3 POSITIONS

CONDUIT HUB

INSTALLATION INSTRUCTIONS

8. Use ONLY Listed/Certified conduit hub rated for Type 4X and T ype 12 applications (one supplied) such as:
RACO #1704 for 1 inch trade size

9. Install the conduit hub. Be sure that the “O” ring is properly seated in its groove.

10. Install the grounding (bonding) plate under the conduit nut. T ighten nut securely for a watertight seal and grounding continuity.
1 1. Any unused conduit entrance holes must be sealed with Listed/Certified closure plugs rated T ype 4X and type 12. (Hubbell Cat.

No. MICPK30).

12. NOTE: The metal closure plug must be grounded (bonded) back to the inside green & yellow grounding buss. Grounding

(bonding) wire connection required.

13. Use of user-installed conduit entrances above the switch are not recommended in applications where condensation may be

present in the conduit (high humidity and extreme temperature change locations). When using the top feed conduit entrance,
drip loops must always be formed as indicated in fig. M2.

Wiring Device-Kellems
Hubbell Incorporated (Delaware)
185 Plains Road
Milford, CT 06460-8897
[phone]

PD2139 (Page 1) (English) PRINTED IN U.S.A. 8/06

INSTALLATION INSTRUCTIONS (CONTINUED)

B. Wiring Instructions

1. Select conductors having 90°C or higher rated insulation and sufficient ampacity in accordance with
the 60°C column of the National Electrical Code® T able 310-16 or Canadian Electrical Code T able 2.

2. CAUTION: USE COPPER CONDUCTORS ONLY.

3. DO NOT TIN CONDUCTORS.

4. Make sure the connected equipment rating does not exceed the rating of this device. See General
Information #4 regarding overcurrent protection.

5. T erminal capacity as indicated in Table 1

6. Strip conductor insulation ½ inch (13 mm).

7. Select proper wiring diagram. Loosen terminal screws. Insert conductors fully into proper terminal.

8. Tighten terminal screws to torque indicated in T able 2:

9. TAKE CAUTION THA T THERE ARE NO STRA Y WIRE STRANDS.

10. Tighten the grounding buss mounting screw to 10-12 lb•in (1.2-1.4 N•m).
11 . Reinstall the cover. The handle must be in the OFF position. Make sure the rope gasket is

properly seated in the groove. Tighten the four cover screws to 10-12 lb•in (1.2-1.4 N•m).

12. Consult factory for auxiliary contact availability.

TABLE 1

Switch #8 to #14 A WG
Ground #8 to #22 AWG
Neu t r al #8 to #22 AWG
Auxiliary

contact

TABLE 2

Switch 12 lb•in (1.4N•m)
Ground 16-18 lb•in (1.8-2.0 N•m)
Neutral 13-15 lb•in (1.5-1.7 N•m)
Auxiliary

contact

20A

#14-18 AWG

20A

10-12 lb•in (1.2-1.4 N•m)

THIS DEVICE CARRIES A MAXIMUM RATING OF:

CA T. NOS. AMPS RATING HORSEPOWER USE PIN & SLEEVE WIRE

[kW] PLUG CAT. NO. PER FIG .

HBL420MI5W 20 600VAC 3Ø 10 [7.45] HBL420P5W W1
HBL420MI7W 20 480VAC 3Ø 10 [7.45] HBL420P7W W1
HBL420MI9W 20 240VAC 3Ø 5 [3.73] HBL420P9W W1
HBL420MI12W 20 120 / 240VAC 2 (208-240VAC, L-L) [1.5] HBL420P12W W2

PROVIDE

CONDENSATE

DRIP LOOP
AS SHOWN

FIG. M2 • TOP FEED

20 AMP

•

FIG. M3 • BACK FEED

(TYPE 4X INSTALLA TIONS ONL Y)

MOLDED IN DRILL POINT
(ONE TOP, ONE BACK,
ONE BOTTOM)

GROUNDING

(BONDING)

PLATE

•

•

20 AMP

GROUNDING

(BONDING)

PLATE

FIG. W1

X

L1 L2 L3

T1 T2 T3

G

GREEN/YELLOW

WIRING DIAGRAMS

G

YZ

GROUNDING

(BONDING)

G

•

GROUND
BUSS
(GRN/YEL)

PLATE

GREEN/YELLOW

FIG. W2

LLGW

L1 L2 L3

T1 T2 T3

G

NG

•

•

GROUND
BUSS
(GRN/YEL)

NEUTRAL
BUSS
(BLUE)

PD2139 (Page 2) (English) PRINTED IN U.S.A. 8/06

3 POLE 4 WIRE

3 Ø

L2

L1

L3

3 POLE 4 WIRE

EDISON SYSTEM

N

L1

L2