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I intend having all the slates re-layed on the roof of my 99 year-old house, in order to repair several leaks. There is an attic room in most of the main roof, with sloped ceilings along both sides. The rafters here are 3.5" deep, so there is only this space above the original lime ceiling...

Retainer wall: I am planning to have a low 5 course 9-inch wall (can be either Flemish or Flemish Garden Wall bond) built to enclose two sides of a small patio, using old imperial-size local bricks. I wish to have three Flemish-bond attached piers, 3 courses higher; one at the square return and...

I am about to re-make a hearth to take a stove. I have dug out down to soil level and blinded over with sand, and my next step is to put in insulation onto a tanked DPC liner, in order to lay a concrete base up to screed level. What are the current regs. re insulation in this situ, please. I...

My BT drop line terminates inside my roof space to a block terminal (BT52A). this a 4-core junction box with screws. Phone cable then extends from here to another 6-way (BT35A) junction box in a more suitable place for distribution. Does anyone know if I can extend to new jack by using the...

Is 1.5mm sq T&E adequate, as 2-core, for a security light with built-in sensor (circuit protected with RCD in CU)? Will 2-core be adequate if I want a separate sensor too? Thanks.

Scenario: 1908 large three-storey Midlands town house, re-wired over twenty years ago. I could not know if the supply system would be generically classed as TN-S, TN-C-S, TT or other. There is a short length of approx 2 inch diam steel pipe from the original solid floor under the stairs...

In a ring circuit can the length of spurs be additional to the 50m maximum for the ring, or do all the spur lengths have to be counted as part of the 50m maximum? In a ring circuit, in order to determine the safe length for any one spur cable does the voltage drop have to be calculated...

ban-all-sheds wrote: "The worst case voltage drop in a ring is equivalent to the drop of a run of 2.5mm2 cable ¼ the total length of the ring." Is the voltage drop in the cable length of a ring circuit not calculated in the same way as in the single cable length of a radial circuit? When I...

I want to power three or four outside security lights off a ring main in the attic. I intend to spur one 1.5mm cable from a switched FCU. I shall have to insert some junction boxes also in this spurred radial circuit to branch off to each light. What are the limits for the (total) lengths of...

I wondered if there any general quidelines regulating the placing of PIR type floodlights (switched by movement), or the sensor type (switched by onset of darkness) to the front of a house which faces the street and almost directly over the pavement. I am interested in a product by Micromark...

My attic has internal walls of 3" deep x 2" wide timbers supporting lath and plaster. I have had to route some 2.5mm sq cable, though keeping it always horizontal or vertical, outside or offset of a direct alignment with one socket. Wherever the cable passes through a stud (it is less than 2"...

Can anyone recommend an IEE guide covering most of the basics for house wiring. A version of OSG is offered by Amazon at about £14, then there is another guide at £76. Does this price difference reflect breadth of content eg. Thanks

In my house now there are really too many ceiling and wall lights on one 5amp lighting circuit. Pendants number 14 and wall lights number 8. The average wattage is around 50 (there are roughly as many 60s as 40s) as we don't need to switch them all on together fortunately, we never test the...

Instead of inserting a junction box, is it okay to hard wire a switched FCU directly into a ring circuit (2.5mm cable, 30amps cartridge fuse in CU). I want to spur, via a frost stat, to a double socket (with a 13amp fuse). I have two heaters in the roof protecting all my water pipes etc. I am...