Difference between revisions of "Dating Old Electrics"
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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: | ||
Line 30: | Line 34: | ||
*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 | + | *Slate fuseboard with bare [[screw]]s for [[fuse]]wire links: in use in late 1800s, obsolete by the 1930s |
− | *Wooden | + | *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
Some dates - but may contain errors, and sometimes things did get installed later than they should strictly have been.
- 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
- 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: