Difference between revisions of "Dating Old Electrics"
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[[image:Mains adaptor 5A wooden 2855-4.jpg|300px]] | [[image:Mains adaptor 5A wooden 2855-4.jpg|300px]] | ||
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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 (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 | ||
| + | |||
| + | 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 fusebox with bare screws for fusewire links: in use in late 1800s, obsolete by the 1930s | ||
| + | *Wooden box with wooden lid fusebox: standard in 1930s | ||
| + | |||
| + | Sockets: | ||
| + | *Accessories mounted on wooden blocks: before 1966 | ||
| + | *Round pin socket outlets: mostly before 1955, but sometimes used much later | ||
| + | *Square pin 13A sockets: post 1945 | ||
| + | *2 pin 5A sockets: | ||
| + | *No sockets upstairs: | ||
| + | |||
==See Also== | ==See Also== | ||
| − | [[Special:Allpages|Wiki Contents]] | + | * [[Special:Allpages|Wiki Contents]] |
| − | + | * [[Special:Categories|Wiki Subject Categories]] | |
| − | [[Special:Categories|Wiki Subject Categories]] | ||
[[Category:Electrical]] | [[Category:Electrical]] | ||
| + | [[Category:History]] | ||
Revision as of 22:27, 3 November 2010
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 (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
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 fusebox with bare screws for fusewire links: in use in late 1800s, obsolete by the 1930s
- Wooden box with wooden lid fusebox: standard in 1930s
Sockets:
- Accessories mounted on wooden blocks: before 1966
- Round pin socket outlets: mostly before 1955, but sometimes used much later
- Square pin 13A sockets: post 1945
- 2 pin 5A sockets:
- No sockets upstairs: