Browsing articles tagged with "Portfolio and field reports incorporating breaker distribution panels serving branch circuits"

60A Main Lugs Only (MLO) Distribution Breaker Panel (DP)

Jul 12, 2011   //   by Robert Monk   //   Job Roll, Residential Renovation, Whole-house Rewires  //  2 Comments

This project is a rewire of a 2-story row home in the Art Museum district of Philadelphia, with an expansion of breaker panel capacity via a new, 60A-rated MLO distribution breaker panel (DP) located at the opposite end of the basement from the service equipment/main distribution breaker panel (MDP).

Breaker panels

may sometimes be referred to their grandfathers in residential electrical, the ‘Fuse Panel’. Also, on a more technical level may be referred to as “Distribution Panel”. And, getting more technical, the first type of computers were known as “switch boards”. Modern day Breaker Panels draw on there design from the earliest Switch Boards.

Fun Facts:

  • The first true Computer Engineers were women whom operated and maintained the switch boards for heavy artillery during World War 2.
  • The computing power of all of the allied forces of World War 2 combined would be equal to the computing power of an electronic greeting card.

Resources:

See also:

Wikipedia- Circuit Total Limitation

Wikipedia - Distribution Board 

Home Depot – Breaker Panels & Circuit Breakers

Fuse cabinet as distribution panel

Apr 22, 2011   //   by Robert Monk   //   Electric 101 Blog, Field Reports Blog, Trouble & Repairs blog  //  No Comments

Fuse cabinet as distribution panel

Many homes in West Philadelphia feature a distribution panel remote from the main service equipment. In older installations, this may be a wooden cabinet with a picture-framed wooden or glass-pane door, usually located in a stair- or hallway, and lined with a felt-like friable material that may be asbestos.

Several fuse-holder modules provide for branch circuit over-current protection. Unlike with modern wiring, the fuses may protect both the grounded (neutral) and ungrounded (‘hot’) conductors of 120V circuits, so a single circuit may have two fuses in it.

 

These fuse cabinets may not meet the demands of modern electrical usage

More on working with, or replacing old fuse cabinet type distribution panels >>

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