Recent content by jon47

Originally it would have been lime plaster, this helps solid walls to breathe, lime wash paint would have been used to finish. Using gypsum (pink finishing plaster) on solid walls can lead to damp problems. Another thing to note is that pointing to the external brickwork should also be lime...

Test equipment should be calibrated. A good quality DMM which tests milli ohms and mega ohms combined with the knowledge of how to test circuits fully will give more of an indication than one of those plug in testers. you won't be able to test an RCD or test Ze, Zs (except by calculation and...

As Ericmark says an RCD will not protect you from arc flash or exploding bits of metal when you cause a short on a live circuit (or from the desire to jump backwards off the ladder).

If you want to be safe your options are: using a harness so if you get a shock you don't fall from height (has a double bonus that if you slip and no shock is involved you are protected from falling as well), use a non conducting ladder so you are electrical separated from earth.

The wiring regulations do not apply retrospectively so if the fuse board and wiring was up to standard when it was installed or last altered and has been maintained as such then no further work is required. If the installation is altered i.e. new sockets or shower etc. then the alterations must...

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I think an r1+r2 test would be better than using the 'test lamp' method.