Separation From Sources of Interference
Unshielded data cables should not be installed near sources of electromagnetism. There is a standard that specifies these distances for structured data cabling systems. EIA/TIA-569, the cabling pathways standard, specifies the following Minimum Separation Distance from Power Source at 480V or less:
| Condition | < 2kVA | 2-5kVA | < 5kVA |
|---|---|---|---|
| Unshielded power lines or electrical equipment in proximity to open or non-metal pathways | 5 in. | 12 in. | 24 in. |
| Unshielded power lines or electrical equipment in proximity to grounded metal conduit pathway | 2.5 in. | 6 in. | 12 in. |
| Power lines enclosed in a grounded metal conduit ( or equivalent shielding (in proximity to grounded metal conduit pathway). | 6 in. | 12 in. | |
| Transformers and Electric Motors | 40 in. | 40 in. | 40 in. |
| Fluorescent lighting | 12 in. | 12 in. | 12 in. |
Guides
- Lamp Guide: General Information
- Lamp Guide: Fluorescent
- Lamp Guide: HID
- Lamp Guide: Incandescent
- Line Noise
- Power Surges and Spikes
- Brownouts
- Blackouts
- Heat Dissipation in Electrical Enclosures
- Hazardous Location Basics
- Basic Proximity Sensor Operations
- Occupancy Sensor Design Guide
- Occupancy Sensor Application Guide
- Color Application for HID Lamps
- Cutler-Hammer Heater Coil
- General Electric Heater Coil
-
Electrical Tables
- Allowable Ampacities Insulated Conductors
- Conduit Fill Table
- NEMA Straight Blade Configs
- NEMA Locking Blade Configs
- Common Conversion Factors
- Derate 3 Conductors in a Raceway
- Direct Current Motor Full Load Current
- Approximate Full Load Amperes
- Full Load Current: Three Phase AC Motors
- Full-Load Current: Single Phase AC Motors
- Specific Resistance
- Temperature Conversion Table
- UL Fuse Classification Chart
- Buck Boost Transformer Full Load Amps
-
Calculations
- Ohm's Law
- Electrical Formulas
- Full Load Formula
-
Datacomm Tables
- Attenuation for Coaxial and UTP Cables
- Backbone Runs: UTP Cable
- Basic/Channel Link Attenuation
- Basic/Channel Link Next Loss
- Cable Administration
- Category Cables
- Circuit Protection
- Common Ethernet Systems
- Common Types of Cabling
- Computer Circuits
- Copper Wire Limitations
- Digital Patch Cable (DPC) Coding
- 10Base-T Crossover Patch Cord
- 10Base-T Straight Thru Patch Cord
- General Cable Installation Rules
- UTP Cable Attenuation
- Installing Category Data Cables
- Parameters of EIA/TIA 568
- Separation from Sources of Interference
- Structured Cabling (568) Systems
- Standard Networking Configurations
- Telecommunication Outlet Specifications
- UTP Connecting Hardware