Difference between revisions of "Dating Old Electrics"

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(linkify)
(al cable etc)
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*TRS (Tough Rubber Sheath) 1945-1962
 
*TRS (Tough Rubber Sheath) 1945-1962
 
*Capothene and Ashothene sheath cables: 1952 - 1960
 
*Capothene and Ashothene sheath cables: 1952 - 1960
*PVC inner PVC outer [[Cable|T&E]] style cables with no cpc ([[House Wiring for Beginners|lighting circuits]]): 1955-1966
+
*PVC inner PVC outer [[Cable|T&E]] style cables with no cpc (no earth wire) ([[House Wiring for Beginners|lighting circuits]]): 1955-1966
 
*Imperial PVC cables: 1955 - 1971
 
*Imperial PVC cables: 1955 - 1971
 
*2.5mm PVC/PVC T&E with 1mm cpc: 1971 - 1981
 
*2.5mm PVC/PVC T&E with 1mm cpc: 1971 - 1981
 
*Twin twisted [[flex]]ible cords: before 1977
 
*Twin twisted [[flex]]ible cords: before 1977
 
*Rubber/PVC mix T&E cable: 1958 to 1961  
 
*Rubber/PVC mix T&E cable: 1958 to 1961  
 +
*CMA (Cable manufacturers association) cable: ceased in the 1940s
 +
*Non-association cable: pre apx 1948
 +
*Aluminium cable:
 +
*Copper coated Aluminium cable:
  
 
Earth wire in cables:
 
Earth wire in cables:
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*Double pole [[fuse]]d switchgear on ac Installations: pre 1955
 
*Double pole [[fuse]]d switchgear on ac Installations: pre 1955
 
*Wood backed Wylex [[fusebox]]es: still being installed in 1983
 
*Wood backed Wylex [[fusebox]]es: still being installed in 1983
*Slate fusebox with bare [[screw]]s for fusewire links: in use in late 1800s, obsolete by the 1930s
+
*Slate fuseboard with bare [[screw]]s for [[fuse]]wire links: in use in late 1800s, obsolete by the 1930s
*Wooden box with wooden lid fusebox: standard in 1930s
+
*Wooden fusebox with wooden lid: standard in 1930s
  
 
Sockets:
 
Sockets:
*Accessories mounted on wooden blocks: before 1966
+
*Accessories mounted on wooden [[pattress]] blocks: before 1966
 
*Round pin socket outlets: mostly before 1955, but sometimes used much later
 
*Round pin socket outlets: mostly before 1955, but sometimes used much later
*Square pin 13A sockets: post 1945
+
*Square pin 13A sockets: post 1945 - may be on older wiring though
 
*2 pin 5A sockets:
 
*2 pin 5A sockets:
 
*No sockets upstairs:
 
*No sockets upstairs:

Revision as of 00:34, 4 November 2010

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Some dates - but may contain errors, and sometimes things did get installed later than they should strictly have been.

Cables:

  • Lead sheath cable: before 1948, except on farms
  • TRS (Tough Rubber Sheath) 1945-1962
  • Capothene and Ashothene sheath cables: 1952 - 1960
  • PVC inner PVC outer T&E style cables with no cpc (no earth wire) (lighting circuits): 1955-1966
  • Imperial PVC cables: 1955 - 1971
  • 2.5mm PVC/PVC T&E with 1mm cpc: 1971 - 1981
  • Twin twisted flexible cords: before 1977
  • Rubber/PVC mix T&E cable: 1958 to 1961
  • CMA (Cable manufacturers association) cable: ceased in the 1940s
  • Non-association cable: pre apx 1948
  • Aluminium cable:
  • Copper coated Aluminium cable:

Earth wire in cables:

  • Separate bare copper earth wires run alongside twin cable:
  • Black earth conductors: before 1966
  • Green protective sleeving: before 1977
  • Green & yellow earth sleeving: 1971 onwards

Main earth bonding:

  • No main equiptential bonding conductor: before 1966
  • 2.5mm main equipotential bonding conductors: 1971-1972
  • 6mm main equipotential bonding conductors: 1966 - 1983
  • 10mm main equipotential bonding conductors: post 1983

Fuseboards:

  • ELCB (Voltage operated circuit breaker): pre 1981
  • Double pole fused switchgear on ac Installations: pre 1955
  • Wood backed Wylex fuseboxes: still being installed in 1983
  • Slate fuseboard with bare screws for fusewire links: in use in late 1800s, obsolete by the 1930s
  • Wooden fusebox with wooden lid: standard in 1930s

Sockets:

  • Accessories mounted on wooden pattress blocks: before 1966
  • Round pin socket outlets: mostly before 1955, but sometimes used much later
  • Square pin 13A sockets: post 1945 - may be on older wiring though
  • 2 pin 5A sockets:
  • No sockets upstairs:


See Also