Branch Circuits and PDU's

  1. Following NFPA 75 Rules

    Data centers have their own standards for fire protection as identified under the National Fire Protection Association (NFPA 75). A closer look at Chapter 5 Section 4 pertaining to Raised Floors we find the following standards: 5.4* Raised Floors. Where raised floors are used, they shall comply with 5.4.1 through 5.4.4. 5.4.1 Structural supporting members for raised floors shall be...
  2. New Rules For 2017 NEC 110.14

    New in the NEC Handbook - 2017 edition 110.14 Electrical Connections 110.14(D) Installation. Where a tightening torque is indicated as numeric value on equipment or in installation instructions provided by the manufacturer, a calibrated torque tool shall be used to achieve the indicated torque value, unless the equipment manufacturer has provided installation instructions for an alternative method of achieving the...
  3. Accommodating Rush Orders

    Not every order is a rush job, but quick turn will always be an important part of the data center industry. At PDU Cables, we recognize this and are prepared to meet our customer's needs, be it delivering cables in a month, a week or a day. Running a Second Shift is the Key to Accommodating Rush Orders Running two...
  4. Is Being Mission Critical Necessary

    "Not every server is mission-critical. Not every data center needs to be, either." I saw that quote in a recent article about how some data centers are looking to offer options on power redundancy to clients who can get by with something less than five-nines. Branch Circuit Power Distribution Cables are a Critical Component of Successful Load Delivery For data...
  5. Electrical Device Torque Settings

    Electrical device manufacturers recommended torque settings that range from 12 to 90 inch pounds depending on the device type, when terminating conductors. Device torque settings can vary dramatically between manufacturers for the same device. As an example, for a CS8369 device one manufacturer recommends 25 to 30 pounds, while another recommends 45 to 54 pounds. That's a very broad range...
  6. Commissioning with Load Banks

    Commissioning with Load Banks Click here for a pdf to view, print and share Commissioning is defined by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) as a quality-oriented process for achieving, verifying, and documenting that the performance of facilities, systems and assemblies meets the defined objectives and criteria. When building or upgrading your data center it...
  7. Rack PDU Power Strips

    Tips on Selecting Rack PDUs "Power Strips" The term PDU refers to two major classes of hardware power devices. The first and typically most common one in the data center facility world refers to the higher-cost floor mounted power distribution devices that transform large capacity UPS power output feeds into distributed power feeds within a server room. These floor-mounted PDU...
  8. Testing & Exercising Branch Circuit Breakers

    Testing and Exercising Branch Circuit Breakers A slow tripping circuit breaker will not only result in unnecessary disruptions to electrical service, but maintaining high fault currents for extended durations can stress the network and cause damaged to equipment.  Defective circuit breakers can allow extensive damage, personal injury, or make an outage more widespread and expensive when a fault occurs. Any...
  9. Infrared Scanning

    Avoid Outages with Infrared Scanning If you think what you can’t see doesn’t exist…think again! Better yet…think infrared scanning! Infrared (IR) scanning is used to see radiation given off by objects.  While infrared radiation is not visible to the naked eye, objects still radiate (heat) even in the dark.  The hotter the object is, the more it radiates heat.  A...
  10. Infrared Electrical Panel Inspection

    Conducting Infrared Electrical Panel Inspections  Why Infrared Scanning Increased resistance and heat are the primary reasons most electrical components fail.  Before electrical components fail, they heat up.  Infrared scanning is used to inspect electrical equipment because excess heat is usually the first sign of trouble.  Loose connections, imbalanced and or overloaded circuits, defective breakers, damaged switches, faulty fuses, and material...

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