- Joined
- 27 Jan 2008
- Messages
- 24,891
- Reaction score
- 2,876
- Location
- Llanfair Caereinion, Nr Welshpool
- Country
The normal long lead vacuum cleaner and lawn mower is no problem as class II equipment but did some testing in a school where I found some projectors, vacuum cleaners and extension leads which were class I as purely due to length of lead they should fail. In my house not a problem all sockets RCD protected but non protected in the school.
For the extension leads RCD plugs were fitted with them I considered even a 1 ohm as being a pass. But I ended up failing the vacuum cleaners and old projectors as double the permitted even though common sense tells me really no problem.
The other problem was some monitors although class I the only metal showing was the plug which would connect to the PC so there was the resistance of supply lead and computer connection lead so again double the permitted resistance which these I passed them as sure if I opened case to get connection they would pass.
I was rather surprised to find no RCD protection in the school and for the extension leads I noted the disconnection time on the paperwork. But should they buy more RCD plugs and fit to the projectors and vacuum cleaners without opening the units it would be impossible to test the RCD plugs other than the test button.
What do others on here do with RCD plugs on other than extension leads when PAT testing? Do you just use test button or do you open appliance to be able to test with meter.
For the extension leads RCD plugs were fitted with them I considered even a 1 ohm as being a pass. But I ended up failing the vacuum cleaners and old projectors as double the permitted even though common sense tells me really no problem.
The other problem was some monitors although class I the only metal showing was the plug which would connect to the PC so there was the resistance of supply lead and computer connection lead so again double the permitted resistance which these I passed them as sure if I opened case to get connection they would pass.
I was rather surprised to find no RCD protection in the school and for the extension leads I noted the disconnection time on the paperwork. But should they buy more RCD plugs and fit to the projectors and vacuum cleaners without opening the units it would be impossible to test the RCD plugs other than the test button.
What do others on here do with RCD plugs on other than extension leads when PAT testing? Do you just use test button or do you open appliance to be able to test with meter.