Table 3
(print from .pdf)
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 |
|
9. |
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) | |