Three Phase Underground 480V

Master Sketch Table

09-2018

These sketches provide rules for three-phase underground (480V) service. Specifications for underground service are at the bottom of the page.

SKETCH # DESCRIPTION

Sketch 8C

Meter panel installation for use in conjunction with instrument transformer metering

Sketch 8D

Meter panel mounting arrangement for use with instrument transformer metering

Sketch 15

Instrument transformer and mounting for installation in instrument transformer cabinet underground. 3 wire, 1200A max

Sketch 15A

Instrument transformers and mounting for installation in instrument transformer cabinet underground service. 800A max

Sketch 16

Pad mounted metering and service termination cabinet up to eight 750 KCMIL conductors per phase. 2000A max.

Sketch 16A

Pad mounted metering and service termination cabinet up to twelve 750 KCMIL conductors per phase. 3200A max.

Sketch 20

Barriers for equipment installed in location with vehicular traffic

Sketch 23

Typical arrangement of instrument transformers in switchgear cubicle

Sketch 40

Typical arrangement of structural facilities installed by customer to accommodate underground service from a 3 phase pad-mounted transformer

Sketch 47

Customer wood pole

Sketch 49

Typical Connectors to be provided by the customer for serving a single point of connection for multiple enclosed service entrance conductors

Sketch 50

Termination compartment service entrance arrangements

Sketch 54A

Termination cabinet for 1 set of cable

Sketch 55

Clearances between gas facilities and electric meters

Sketch 55A

Clearances between objects and electric meters

Specs

SPEC # DESCRIPTION

6-14-125

Placing Plants, Shrubbery or Structures around pad-mounted devices

6-15-160

Customer Installed Precast Manhole

6-15-180

Customer Installed Duct System

6-17-122

Customer Installed Three-Phase Pad-Mounted Precast Transformer Foundation. 75KVA to 2500KVA Capacity

6-17-163

Customer Installed Transformer Vault. 30KVA to 2500KVA Capacity

6-18-115

Installation Instructions for Customer Installed Conduit Systems on PPL Terminal Poles

6-19-100

Customer Low-Voltage Switchboards. Service Cable Terminal Compartment.

6-22-187

Installation Instructions for 3-Phase, 200 Amp Switchgear Foundation

6-22-197

Installation Instructions for 3-Phase, 600 Amp Switchgear Foundation

6-22-198

Three-Phase Pad-Mounted Manual or Automatic Source Transfer Switch

6-22-199

PPL EU Ultra Service Park Typical Utility Plan