Table 3

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pplelectric > Rules For Electric Meter and Service > Table of Contents > metering tables > Meter Service Devices > table 3

Table 3

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Effective December 15, 2008
Updates All Previous Tables

Polyphase, Single Position
OVERHEAD ENTRANCE
100, 200, 400 or 600 Amp, 208/120 Volt Wye or 240/120 Volt Delta
200 or 400 Amp, 480/277 Volt Wye
7 Terminal

MFG. & CATALOG #

SERVICE AMPS

DIMENSIONS (INCHES)

TERMINAL SIZE (AWG OR KCMIL)

BYPASS TYPE

HxWxD

MIN.

MAX

SEE NOTE #2

CUTLER HAMMER

1004138A-CH

200

34 x15x5

4

500

Lever

DURHAM

1004138A

200

34 x15x5

4

500

Lever

MURRAY

RH-173GR

200

17x10x5

6

350

Lever

RH-173GRJ

200

17x10x5

6

350

Lever

RK7-9564

600
(Cl 480)

43x20 x6

See Note #9

Bolt-In

LANDIS & GYR

40007-01GP

200

17x10x5

6

350

Lever

44707-02PP

400
(Cl 320)

34x20x6

See Note #8

Lever

9817-9564

600
(Cl 480)

43x20 x6

See Note #9

Bolt-In

MILBANK

U-7573

100

14x8x4

8

2/0

Lever

U-7421

200

17x10x5

2

350

Lever

U-4168

400
(Cl 320)

34 x19x6

See Note #8

Lever

SIEMENS

S40007-01

200

17x10x5

6

350

Lever

S40007-01GP

200

17x10x5

6

350

Lever

S47707-81TH

200

28x14x6

4

600

Lever

S44707-02PP

400
(Cl 320)

34x20x6

See Note #8

Lever

S9817-9564

600
(Cl 480)

43x20 x6

See Note #9

Bolt In

SQUARE D

1004138A-SQD

200

34 x15x5

4

500

Lever

480V CIRCUIT BREAKER/METER BASE COMBINATION

MFG. & CATALOG #	SERVICE AMPS	DIMENSIONS (INCHES)	LINE TERMINAL SIZE (AWG OR KCMIL)		LOAD TERMINAL SIZE (AWB OR KCMIL)		AIC @480V
		HxWxD	MIN	MAX	MIN	MAX
MILBANK
U5767-x-200-CB	200	43x13x5	#1/0	350	#6	350	35,000

MOST RECENT CHANGES

DATE	MFG.	CATALOG #	STATUS	REASON
12/2008	Milbank	U5767-x-200-CB	Approved	New

*NOTES:*
1.	All meter bases listed in this table are "ringless" style and are rated 600 volts AC unless otherwise noted.
2.	All polyphase socket style bases must contain a lever bypass rated 100% continuous duty.
3.	The manufacturer's catalog number must be stamped on the outside of the meter base so that it will be visible after the base is installed. The number must not be stamped on the cover.
4.	When aluminum conductors are used, the electrical contractor must apply the corrosion inhibiting compound recommended by and in the manner prescribed by the cable manufacturer.
5.	All 200 amp meter bases capable of accepting 500 Kcmil conductor must be marked "200 Amp Capacity".
6.	The third jaw from the left (as viewed from the front) on the bottom row of the seven jaw block must be connected to the neutral using a #14 awg or larger copper wire.
7.	Hub requirements:
	Connector Size	Minimum Hub Size
	350 Kcmil 500 Kcmil 800 Kcmil	2 1/2 inch 3 inch 3 1/2 inch
8.	Class 320 Meter Bases: All 320 amp meter bases contain stud terminals. Only UL approved lay-in or box style connectors suitable for use with copper or aluminum conductors can be installed for wire termination on the studs. Compression connectors are not permitted. The upper right hand jaw (as viewed from the front) must contain an "anti-inversion" insert to prevent inverted meter installation or installation of a lower class meter.

CLASS 320 METER BASE
CONNECTOR REQUIREMENTS

	Line Side Terminals	Line Side Neutral Terminals	Load Side Terminals
WIRE RANGE	Single Only 350 to 750 Kcmil	4/0 Awg to 500 Kcmil	Single--Up to 600 Kcmil Double--Up to 350 Kcmil

APPROVED CONNECTORS FOR
CLASS 320 METER BASES

MFG.	LINE SIDE TERMINALS	LINE SIDE NEUTRAL TERMINALS	LOAD SIDE TERMINALS
LANDIS & GYR, MURRAY, SIEMENS	56476	60162	Single - 60162 Double - 56732
MILBANK	K3863	K1540	Single - K1540 Double - K1350

Class 480 Meter Bases:

All 480 amp meter bases contain stud terminals.
Only L&G anti-rotational, box-style connectors can be installed for wire termination on the studs.
Compression connectors are not permitted.
Single or double port terminals are permitted on the line side studs.
Single, double or triple port terminals are permitted on the load side studs.
All overhead entrance bases have two (2) hub openings on top of base.

APPROVED CONNECTORS FOR
CLASS 480 METER BASES

MFG.	LINE SIDE TERMINALS	LINE SIDE NEUTRAL TERMINALS	LOAD SIDE TERMINALS
*LANDIS & GYR, MURRAY, SIEMENS*	*Single Port Kit*
	3 - #56476 (250-800 Kcmil)	1 - #60162 (#4-600 Kcmil)	3 - #56476 (250-800 Kcmil) 1 - #60162 (#4-600 Kcmil)
	*Double Port Kit*
	3 - #56732-M (#4-500 Kcmil)	1 - #56732-M (#4-500 Kcmil)	4 - #56732-M (#4-500 Kcmil)
	*Triple Port Kit*
	Not Permitted	Not Permitted	4 - #68752-1 (#6-250 Kcmil)