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Hi Guys, I am currently designing a pitched roof for a pergola in my back yard. I think it'll be useful to see the design first, so here's the link: https://s17.postimg.org/nftggm80v/pergola.png The span for the entire construction is approx 7.8m x 2.4m. The rafters are placed at 1.8m...

Is there any viable method to test for and quickly identify issues that are instigated by a broken PEN conductor ? Obviously, this is a potentially fatal flaw with TN-C-S configurations, but how would you go about identifying it in the event it did arise ? I would imagine things would go into...

Hi Guys, Just got a quote from the DNO for 200 quid to up the cut-out fuse from 40 to 60. Sounds a bit steep?? How much do you guys usually expect to pay for a fuse upgrade? Not had many so I don't have much to go off. Allegedly, they were offering to do it for free not long ago.

I will be running some 16mm^2 3-core SWA. Most of the run has bends which are within an acceptable min bend radius. However, the final end of the run goes 2.5m up an exterior wall, w/ a sharp 90 degree bend through masonry and some 1st floor joists to the CU. The problem is I don't have much...

Hi Guys, Does anyone here use RCBOs/MCBs between the mains and an outbuilding CU? I've heard of people using time-delayed RCDs at the mains, but what if the run between the buildings is damaged for whatever reason and there is a short between L-N?

Hi Guys, Is it normal to have a 400v mains isolation switch for a 240v supply?

Hi Everyone, We laid down a slab a few months ago. The readymix guy ran out of concrete and we had to get another one out to finish the job. This resulted in the last segment being about 10mm higher than the rest of the slab (due to thicker consistency). The slab size is 5600mm X 5400mm. The...

Hi Guys, I have purchased a sectional door that will be installed on the inside of my garage. I took some measurements of the garage opening, and it is 20mm taller than the door. How can I "fill in" this gap? I tried to do a 3 coat (2 scratch) s/c render (+waterproofer) on the underside of the...