Product Brochure
49
Capacity: 400 amperes continuous, 480 amperes continuous/480 amperes maximum - 600 volts a.c.
Application: For use with 3 or 4 wire, single phase and polyphase self-contained, Type K watt/hour meters.
Enclosures: Constructed of 14 gauge galvannealed steel suitable for indoor or outdoor installations. Aluminum enclosures also available-
contact factory. All enclosures are NEMA type 3R.
Bypass: Separate manual type (2 required for K-5, 3 required for K-7) or rotating link. Both types have 100% bypass capacity.
Blocks: Glass fiber reinforced polyester plastic. High strength, arc and track resistant.
Terminals: 1/2” - 20 plated steel studs with nuts and captive Belleville washers to accommodate various pressure type lugs for conductors
from #6 to 800 MCM Cu or Al. Require 3/4” socket wrench.
Meter Mounting: Stud type 5/16 - 24. 1/2” wrench required. Studs are positioned so the meter cannot be installed upside down.
UL: Type K-7 and K-7T are UL listed except as restricted by NEC wire-bending requirements. Both types may be wired for under
ground feed using parallel conductors on the line side. Type K-7T may also be wired using overhead feed with parallel
conductors on the line side. All devices require parallel wiring on the load side for UL listing. Type K-7 devices are U.L. listed
for up to 600 amperes capacity when wired to NEC capacity.
GENERAL INFORMATION:
Ground Lug
(included)
H56427-M (2 Req.)
(Two #2 to 500 KCM)
H56732-M (4 Req.)
(Two #4 to 500 KCM)
UNDERGROUND
SERVICE
(GROUP P)
H56732-M (8 Req.)
(Two #4 to 500 KCM)
Ground Lug
(included)
OVERHEAD
SERVICE
(GROUP Q)
UNDERGROUND
SERVICE
(GROUP R)
H56427-M (3 Req.)
(Two #2 to 500 KCM)
Ground Lug
(included)
H56732-M (5 Req.)
(Two #4 to 500 KCM)
TORQUE DATA:
Connection Part No. Stud Size Wrench Size Torque
Lug Mounting H56271 1/2” - 20 3/4” Hex 500 in-lbs.
Nut/Washer
Meter Mounting H56271-2 5/16” - 24 1/2” Hex 150 in-lbs.
Nut/Washer
Lug Wire - - 5/16” Allen 275 in-lbs.
Binding Screws 3/8” Allen 375 in-lbs.
1/2” Allen 500 in-lbs.
K-Base Torque Specifications
Ground Lug
(included)
H56732-M (6 Req.)
(Two #4 to 500 KCM)
OVERHEAD
SERVICE
(GROUP N)
CONNECTIONS:
K-BASE BYPASSES:
Instructions for installing and operating K-7 rotating link bypass #69623
To install bypass:
1. Remove the 3 nuts “A” from the studs extending from the 3 bypass bars.
2. Assure that bypass feet are vertically positioned in relation to the bypass handle as shown and the 3 handle
screws are tight enough so that bypass feet do not turn.
3. Install bypass assembly with the handle screws toward the top edge of the bypass handle as shown. Slide the
3 bypass feet over the exposed studs, through the holes in the bypass feet.
4. Loosen the 3 handle screws approximately 1/8 turn using a small standard-tip screwdriver.
5. Re-install nuts “A” and tighten securely so that bypass feet are in the vertical, non-bypassed position.
To operate bypass:
1. Loosen the 3 nuts “A” located on the 3 bypass bars, 1 full turn.
2. Loosen the 3 nuts “B” located on the line side current connectors, 4 full turns.
3. Slide the bypass handle from right to left, until the curved slots in the bypass feet rest against the studs on
the current connectors.
4. Securely tighten all 6 nuts “A” and “B”, while ensuring the bypass feet remain resting against the connector studs.
CURRENT CONNECTIONS
BYPASS FOOT
(3) TYPE.
HANDLE SCREW
(3) TYPE.
BYPASS HANDLE
K-7 Block Assembly
BYPASS BAR (3) TYPE
A
A
A
K-7 Bypass #58888
K-7 Bypass #58888, 3 required. For use
when removing meter from K-7 mounting
device.
1. Loosen nuts “A” and “B” 4 full turns.
2. Place bypass under nuts, shorting
across from current connectors to
bypass bars.
3. Tighten all nuts securely.
NUT WITH
BELLEVILLE
WASHER
FLAT
WASHER
Install Flat Washer On Top
Of Connector Lug
Product Schedule 448
K-7 Bypass #H58888