Old cable types
Posted: Tue May 04, 2021 9:17 pm
Hey Team,
Was just a job the other day a saw some oldish TPS which was solid core 2.5mm primary insulation on the earth as well, not bare earth in sheath.
What date did the standards prevented the uses of solid core cable other than 1mm? Just want to get a better upstanding of when types of cable were in use.
Furthermore, the work I was doing wasn’t on the said conductors but likely to go back in future and it got me thinking.
Am I right in assuming, that even though this type of cable are now prohibited, that as it was compliant at the time of installation that as long as the cable is electrically safe that it can remain in service, repaired, maintained etc and not required to be removed?
The ESR number escapes at the moment regarding existing works, fittings, installations and appliances (often referred to as “grandfather” clause) that governs these types of things.
I know many companies sell to customers that there house or property “is required by law” to be rewired as the cable is now “illegal”. I am not disagreeing that damaged or old cable (VIR or TRS) is a risk, but that is there statement of it being legally required to be removed as untrue, unless that cable is electrically unsafe?
Obviously if insulation breaking off conductors or brittle when moved, which as we all know is common then clearly it is electrically unsafe. But the mere presence of said cables does this constitute the explanation that it needs to be removed?
I hope that question made some kind of sense, thought I ask here as the Facebook pages are getting a bit punishing and the knowledge here is great.
Was just a job the other day a saw some oldish TPS which was solid core 2.5mm primary insulation on the earth as well, not bare earth in sheath.
What date did the standards prevented the uses of solid core cable other than 1mm? Just want to get a better upstanding of when types of cable were in use.
Furthermore, the work I was doing wasn’t on the said conductors but likely to go back in future and it got me thinking.
Am I right in assuming, that even though this type of cable are now prohibited, that as it was compliant at the time of installation that as long as the cable is electrically safe that it can remain in service, repaired, maintained etc and not required to be removed?
The ESR number escapes at the moment regarding existing works, fittings, installations and appliances (often referred to as “grandfather” clause) that governs these types of things.
I know many companies sell to customers that there house or property “is required by law” to be rewired as the cable is now “illegal”. I am not disagreeing that damaged or old cable (VIR or TRS) is a risk, but that is there statement of it being legally required to be removed as untrue, unless that cable is electrically unsafe?
Obviously if insulation breaking off conductors or brittle when moved, which as we all know is common then clearly it is electrically unsafe. But the mere presence of said cables does this constitute the explanation that it needs to be removed?
I hope that question made some kind of sense, thought I ask here as the Facebook pages are getting a bit punishing and the knowledge here is great.