insulation resistance test on shower circuit with neon isolater

[n180]

On a new install of a shower circuit, with a neon isolater, is it better to use choc blocks to bypass neon isolater or would it be ok to just test live-earth (live being neutral and live combined) and miss the live-live test?

If testing just live-earth, would you write it down in details of departures that live-live was missed and would you just put n/a in the schedule of tests under live-live test?

Thanks in advance.

 

[SparkyChick]

Ideally on a new circuit, you'd disconnect the neon. Alot of the switches these days have a means of doing this. MK for example, their 45A DP isolator, the neon has crimp connectors on that simply 'plug in' to contacts on the switch body. One can be pulled out for IR testing.

 

[freddo]

Similar with the Crabtree pull cord switches, dropping the cover disconnects the neon.

Even easier, use switches without neons!

 

[Ian1981]

IR test it before connecting to the neon by temporarily linking the load and supply together

 

[Deleted member 9648]

It would not be a departure to test LN-E as the regulations permit this method. If I use this test it is stated in the extent of work and 'lim' is recorded in the L-N test result in the schedule. However I normally use this method only on existing circuits, on a new circuit where there are no worries over unknown connected equipment I will test L-N and disconnect loads/neons. An exception would be lighting where it's likely control gear/drivers etc will already be connected before IR tests are carried out and would be impractical to disconnect.

 

[ChrisElectrical88]

I normally use Clik shower pulls with 10mm cable. Pull switch last thing to connect (Except neutral in shower ans dist board) and test each way from this point. Saves messing about connecting to disconnect again.