Meter
Socket

Maximum

Service Conductor

Approximate
Socket Size in Inches

Type Of

Code

Amperes

Size

D

W

L

Service

Application

S-100

100

Maximum
Size
#1 AWG

3-1/2

8-1/2

10

Overhead
Only

100 Amperes or Less
and services requiring
current transformers

U-150

150

1/0-2/0

4-1/2

8-1/2

14

Underground
Only

150 Amperes or less

S-200

200

1/0
250 KCM

4-1/2

8-1/2

14

Overhead
Only

150 & 200 Ampheres
Residential

U-200

200

1/0
250 KCM

4-1/2

8-1/2

14

Underground
Only

200 Amperes
Residential

H-200

200

1/0
250 KCM

4-1/2

8-1/2

19

Overhead
Or
Underground

200 Ampere
commercial & industrial
with demands under 35
kVA

400 Ampere
Transocket

400

250-750
KCM

11

24

30

Overhead
Or
Underground

200 to 400 Ampere
with demands over 35
kVA

GV2

150

GV & GH
Line

4

8-1/4

20

Overhead
Only

Vertical 2 position gang
socket for two
individual 150 ampere
services

GH-2
GH-2-2

150
200

Side
1/0 To
250 KCM
Load

4-3/4
5

20-1/2
28

12
16

Overhead
Or
Underground

Horizontal gang meter
sockets for 2 to 6
positions

GH-3
GH-3-2

150
200

Side
Maximum
2/0 Al
or

4-3/4
5

32-1/2
36

12
16

Overhead
Or
Underground

GH
For individual services
rated 150 amperes or
less.
Total service
requirements

GH-4
GH-4-2

150
200

1/0 Cu
GH - # - 2
Line

4-3/4
5

41
45

12
16

Overhead
Or
Underground

Shall Not Exceed!
300 Amperes for Cu or
225
Amperes for Al

GH-5
GH-5-2

150
200

Side
1/0 To
600 KCM
Load

4-3/4
5

49
55

12
16

Overhead
Or
Underground

GH - # - 2
For individual services
rated 200 amperes or
less.
Total service
requirements

GH-6
GH-6-2

150
200

Side
Maximum
250 KCM

4-3/4
5

57-1/2
62

12
16

Overhead
Or
Underground

Shall Not Exceed!
400 Amperes for Cu or
400 Amperes for Al

Instrument-Cabinet
Installations

200 And
Up

One or
More Per
Phase

8 x 14 inch Single Meter Socket Overhead
or Underground
See Table III

Where The
Service Size
Exceeds
Those
Described
Above