Table 4

Approved Meter Service Devices

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Effective September 4, 2020
Updates All Previous Tables

Polyphase, Single Position
Underground Entrance
200 or 400 Amp, 208/120 Volt Wye or 240/120 Volt Delta
7 Terminal

MFG. & CATALOG # SERVICE AMPS DIMENSIONS (INCHES) TERMINAL SIZE (AWG OR KCMIL) BYPASS TYPE MAX UG WIRE SIZE
HxWxD MIN. MAX SEE NOTE #2
 EATON
1008543-CH 400 (CL 320) 397/8 x 20 x 61/2 See Note #8 Lever 750 
 GE
1008543-GE 400 (CL 320) 397/8 x 20 x 61/2 See Note #8 Lever 750 
 MIDWEST
1008543-MEP 400 (CL 320) 397/8 x 20 x 61/2 See Note #8 Lever  
MILBANK
U-3786
(side-wired)		 200 19 x 18 x 61/2 6 350 Lever 350
U-4168
(side-wired)		 400
(Cl 320)		 343/4 x 19 x 61/2 See Note #8 Lever 750
 SCHNEIDER/SQUARE D
1008543-SQD 400 (CL 320) 397/8 x 20 x 61/2  See Note #8 Lever 750 
SIEMENS
S9804-9096
(side-wired)		 200 201/4 x 161/4 x 5 4 600 Lever 350
S9804-9142
(side-wired)		 200 201/4 x 161/4 x 5 4 600 Lever 350
S44707-02PP
(side-wired)		 400
(Cl 320)		 34 x 20 x 61/4 See Note #8 Lever 750
TALON (formerly Landis + Gyr (L+G))
9804-9142
(side-wired)		 200 201/4 x 161/4 x 5 4 600 Lever 350
44707-02PP
(side-wired)		 400
(Cl 320)		 34 x 20 x 61/4 See Note #8 Lever 750

MOST RECENT CHANGES

DATE MFG. CATALOG # STATUS REASON
09/2020 Eaton, GE, Midwest, Schneider/Square-D 1008543 Added Mfg. requested socket addition to the table
12/2017 Eaton/Cutler Hammer CH9802K7 Removed 600 Amps (CI 480) (Bolt-in metering)
12/2017 Siemens S9817 9802 Removed 600 Amps (CI 480) (Bolt-in metering)
12/2017 Talon 9817 9802 Removed 600 Amps (CI 480) (Bolt-in metering)
12/2017 Note 9   Removed Class 480 V Meter Bases
12/2017     Removed 480 V Circuit Breaker/Meter Base Combinations

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. Conduit Requirements:
    • 200 Amp Service - The conduit KO directly under the line (utility) terminals must accept a 3 inch conduit.
    • 400 Amp (Cl 320) Service - The conduit KO directly under the line (utility) terminals must accept a 4 inch conduit. The conduit KOs directly under the load terminals must accept two(2) 3 1/2 inch conduits.
  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