Recent content by says-les

Good point

We go to length by design to ensure shock protection. Zs must be measured and be below a certain figure. If the user is working at the end of a 30 Metre extension, he is risking a shock if a fault to earth occurs while using an earthed metal tool. The disconnection time will exceed 0.4 sec...

With your reply in mind, a spur from a ring should only feed one single or twin 13Amp socket. There are two in this case, but no matter how you argue, it is a dedicated cooker final circuit, and I observed it while investigating why the lower oven was not heating. I was NOT doing an inspection...

Inspection of a domestic kitchen showed that two twin 13A sockets were spurred off the cooker outlet. Cooker exists fed from cooker outlet as well. What C rating do you give? What to say/report to customer?

During an inspection it was observed that twin flush sockets were installed on a finished engineering brick wall. The installer had simply left a half brick space for each socket resulting in no proper landing for the over-sized space. How would you remedy this?

I understand. Thank you.

I am having trouble getting the Thea Microwave sensor to calibrate properly for movement of a human walking below it. It is loosely fitted inside a 5ft twin led batten, corrosive type by Ansell. The leds are fitted to a steel tray inside the luminaire and when up in a single garage rafters...

Turned out that it was the armature from a large motor which weight a few cwts and needed a wheel barrow to shift from the armature winding dept to the stores where I worked at 15.

Was sent for a 3ft ASTRALISER

Thanks for that info and advice. What is the diff between these sensors and the micro sensors that can be installed inside a luminaire?

That is the point, the normal switch control would be unable to over-ride the sensor. would connecting the floating contacts of the sensor in parallel across the line and switch-wire During a meeting the room would be plunged into darkness after the sensor timed out. I can't see how this would...

Been asked if I could install a PIR detector to bring on luminaires in a meeting room which has two way switching. I have seen this in new builds but this is an existing build. What happens when there is a meeting taking place and movement ceases. How is this arranged and what materials are...

What is RO7?

Just wanted verification - thank you.

Fit a new RCD