TO: ALL AT&T INSTALLATION SUPPLIERS



TO: ALL AT&T ENGINEERING SUPPLIERS Date: 03/03/2016

EFFECTIVE DATE: 5 days from posted date or as per Supplier’s Contract

Submitter’s Name: Charles Matlack

TP: TP76400 Subject: Conductor Size Action: Add: Modification: Delete:

Section: 12 Section Title: Power Systems

Subsection: 8 Section Title: AC Power Distribution

Subsection: 8.7 Subsection Title: Branch Circuits

Prior to Change:

TABLE 12-12 – MINIMUM CONDUCTOR SIZE PER BRANCH CIRCUIT

|Ampere Rating |Conductor Size |

|15 Amp |#14 AWG |

|20 Amp |#12 AWG |

|30 Amp |#10 AWG |

|50 Amp |#8 AWG |

Post Change:

TABLE 12-12 – MINIMUM CONDUCTOR SIZE PER BRANCH CIRCUIT

|Ampere Rating |Conductor Size |

|15 Amp |#14 AWG |

|20 Amp |#12 AWG |

|30 Amp |#10 AWG |

|50 Amp |#8 AWG |

|60 Amp |#6 AWG |

Questions relative to this ERCN should be addressed to Serena Kwong at 510-796-1097

Serena Kwong

Specialist –Technical Process /Quality

sk5945@

Access the TP's on the Extranet Site –

Concurred

Area Mgr Eng Network Quality

Implementation Eng & Common Systems Date: 01-25-16

(Mike Cassidy)

Principal-Network Design Engineer (Subject Matter) Date: 01-21-16

(Charles Matlack)

Release Approved

Specialist –Technical Process /Quality Date: 03-03-16

(Serena Kwong)

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