SAES-T-912 PDF - Communications Feeder Cable - PDFYAR - Engineering Notes, Documents & Lectures

This article is about SAES-T-912 which is about Communications Feeder Cable and download SAES-T-912 PDF for telecommunication and electrical engineers, supervisors and project managers, telecom QCs, telecom QC Supervisors. This is saudi aramco standards of Telecommunication Engineering based on international codes and standards and useful for telecom and electronics engineering knowledge to get job as engineers, QC Supervisors and QC managers, Engineering managers and technicians.

SAES-T-912 PDF Download

SAES-T-912

SAES-T-912 PDF Download

Communications Feeder Cable

SAES-T-912 Standard is a document that outlines the mandatory requirements for the design, extension, and placement of outside plant feeder cables for buried and underground applications. The standard provides guidelines to ensure the proper installation and performance of feeder cables in telecommunication systems. It covers various aspects related to the design, routing, burial depth, protection, and testing of feeder cables. Compliance with this standard is essential to ensure the reliability and functionality of telecommunication networks.

Industry Codes and Standards for SAES-T-912

The industry codes and standards relevant to SAES-T-912 include:

General Telephone and Electronics:

National Electrical Code (NEC): A standard that sets guidelines for electrical installations to ensure safety.

National Electrical Safety Code (NESC):

A code that provides guidelines for the installation, operation, and maintenance of electric supply and communication lines.

National Fire Code (NFC):

A code that addresses fire prevention, fire protection, and life safety in various types of buildings and occupancies.

Institute of Electrical and Electronics Engineers (IEEE):

IEEE STD 634: A standard that specifies the qualification test requirements for cable penetration fire stops.

Rural Electric Administration (REA):

REA-PE-39: A standard that covers the requirements for multi-pair, plastic-insulated, filled, telecommunications cable.

Underwriters Laboratories, Inc. (UL):

UL 910: A standard that defines the test method for fire and smoke characteristics of electrical and optical-fiber cables used in air-handling spaces.
UL 1479: A standard that outlines fire tests for through-penetration firestops.

These codes and standards ensure compliance with safety, fire protection, and performance requirements for electrical and telecommunications installations, as well as specific testing methods for fire and smoke characteristics.

Important Design Requirements

The important design requirements for feeder cable design in accordance with SAES-T-912 are as follows:

A. Avoid cable complement multiplication to prevent excessive duplication of cable pairs.
B. Use filled core type feeder cable with filling compound meeting the requirements of SAES-T-920 and REA-PE-39. Outer sheath, conductor insulation, metallic shield(s), and armor (if required) should also comply with these standards.
C. Consider the following points for central office cable terminations and extensions:
a) Feeder cables from the central office should have the appropriate number of pairs and gauge economically justified for the planned feeder area.
b) Plan new terminations when the cable route reaches 75% fill at the central office.
c) Size feeder cable extensions to meet initial and forecasted growth requirements. Plan extensions when cable-fill reaches 80%.
D. Specify cable gauge based on user loop requirements and limiting factors such as resistance, capacitance, and attenuation. Refer to GTE 832 series for additional design parameters.
E. Place feeder cables following established “Fundamental Feed Routes” without violating feed route boundaries to ensure efficient cable distribution.
F. Avoid proposing aerial feeder cables except for temporary service, as it does not align with long-term objectives.
G. Submit route layout sheets with each specification submittal to justify additional feeder cable placement. Refer to GTE 912-100-071 for additional design objectives.
H. Place cable stubs at anticipated branch splice locations to service areas as per the Outside Plant Plan. Stub sizing should be determined as follows:
a) Select stub size to avoid future changes, either matching the main cable size or larger (1/3 the size of the main cable or three times the size of the ultimate branch pairs, whichever is larger).
b) Use appropriate gauge for stubs based on main cable gauge (24 gauge for 26, 24, and 22 gauge main cables, and 22 gauge for 19 gauge main cables).
c) Organize pair counts of stubs in continuity, such as 1-300, 601-1200, 401-800, etc.
I. Size feeder cables terminated in the Facility Area Connector (FAC) to match the size of the “In Count” termination field, reducing potential troubles caused by workman activity.
J. Select ducts in conduit systems for feeder cable placement considering the following:
a) Avoid blocking other vacant ducts and racking positions.
b) Select ducts from the lowest appropriate positions.
K. Include wall-to-wall and center-to-center measurements on construction drawings to minimize cable waste and ensure sufficient cable for splicing, stubbing, and racking.

FAQs about SAES-T-912 PDF Download

Q1: What type of feeder cable should be used for buried and underground applications?

A: Filled core type feeder cable should be used, complying with the requirements of SAES-T-920 and REA-PE-39. The outer sheath, conductor insulation, metallic shield(s), and armor (if required) should also meet these standards.

Q2: How should feeder cables be sized and extended from the central office?

A: Feeder cables should have the appropriate number of pairs and gauge for the planned feeder area. New terminations and extensions should be planned based on cable-fill levels, with terminations at 75% fill and extensions when cable-fill reaches 80%.

Q3: What factors should be considered when specifying the gauge of feeder cables?

A: The cable gauge should be based on user loop requirements and limiting factors such as resistance, capacitance, and attenuation. Additional design parameters can be found in the GTE 832 series.

Q4: How should feeder cables be placed to ensure efficient cable distribution?

A: Feeder cables should be placed following established “Fundamental Feed Routes” without violating feed route boundaries. This ensures optimal cable distribution throughout the network.

Q5: Are aerial feeder cables recommended for long-term use?

A: No, aerial feeder cables are generally not recommended for long-term use, except for temporary service. The design objectives align with underground and buried cable placement.

Q6: What should be included in the route layout sheets for feeder cable placement?

A: Route layout sheets should be submitted with each specification submittal to justify additional feeder cable placement. Refer to GTE 912-100-071 for additional design objectives.

Q7: How should cable stubs be sized at branch splice locations?

A: Cable stubs should be sized to avoid future changes, either matching the main cable size or larger (1/3 the size of the main cable or three times the size of the ultimate branch pairs, whichever is larger). The appropriate gauge should be used based on the main cable gauge.

Q8: How should feeder cables terminated in the Facility Area Connector (FAC) be sized?

A: Feeder cables terminated in the FAC should be sized to match the size of the “In Count” termination field, reducing potential troubles caused by workman activity.

Q9: What factors should be considered when selecting ducts for feeder cable placement?

A: Ducts in conduit systems should be selected to avoid blocking other vacant ducts and racking positions. Ducts should be selected from the lowest appropriate positions.

Q10: What measurements should be included on construction drawings for feeder cable design?

A: Construction drawings should include wall-to-wall and center-to-center measurements to minimize cable waste and ensure sufficient cable for splicing, stubbing, and racking.

SAES-T-912 PDF – Communications Feeder Cable

SAES-T-912 PDF Download

Communications Feeder Cable

Industry Codes and Standards for SAES-T-912

Important Design Requirements

FAQs about SAES-T-912 PDF Download

Q1: What type of feeder cable should be used for buried and underground applications?

Q2: How should feeder cables be sized and extended from the central office?

Q3: What factors should be considered when specifying the gauge of feeder cables?

Q4: How should feeder cables be placed to ensure efficient cable distribution?

Q5: Are aerial feeder cables recommended for long-term use?

Q6: What should be included in the route layout sheets for feeder cable placement?

Q7: How should cable stubs be sized at branch splice locations?

Q8: How should feeder cables terminated in the Facility Area Connector (FAC) be sized?

Q9: What factors should be considered when selecting ducts for feeder cable placement?

Q10: What measurements should be included on construction drawings for feeder cable design?

1 thought on “SAES-T-912 PDF – Communications Feeder Cable”

Leave a Reply Cancel reply