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Most systems are designed to just have the door release on the Yale lock so the mortice would have to be left undone when the system was in use. You can get all sorts of systems, most are fairly basic and would only require a Cat5 (or similar) cable run from each point back to the control unit...

Something very wrong there, i had a similar thing happen when the main neutral at a hotel was left disconnected on the main supply. Somehow it had found a neutral through somewhere else but as it broke down the voltage started to spike. This was on a 3 phase system mind, do you have a 3 phase...

Is this a new circuit your having installed or do you already have a cooker cable installed which you want to put a switch on that fits a single box operating your usual cooker outlet? I've read this whole post twice and i'm still a little baffled. Scolmore do the Click Mode range which looks...

Wish i could do work like that. Who's to say those units aren't on an isolation transformer? Don't need an earth then....

Yes that is pulse override. In which case connect the earth to earth (obviously) the black (with a bit of blue sleeving/tape) to the neutral of the fitting and the grey (with a bit of brown sleeving/tape) to the live of the fitting. The brown needs to be put in a block connector on it's own...

Looks like you've got a permanent live and switch live as well. That would have allowed you to operate the existing light either on the PIR (comes on when people walk past) or by having the light on permanently by operating the switch. You've got 2 choices now. You can have the light either just...

It's never an easy one knowing what the best option is for tv aerials. Usually i would put 3 satellite grade coax cables to the lounge tv position. That will atleast cover you for Sky+/Freesat as well as your regular digital tv and DAB/FM. Generally most people just want a regular tv point in...

Here is a link to the LABC website which details the bodies who cover Part P registration. Any contractor who claims to be Part P registered will appear on the listings on the appropriate websites. There will usually be a contractor search page on each site which allows you to find Part P...

Not to worry gopukhanna, hijacking isn't a threatening or bad term on a forum, it's just a term used when the topic goes off topic nothing else. I've posted on your topic some details you may find useful.

If it's a like for like swap Part P does not apply regardless of which room it's in. The circuit is not being altered so nothing is actually changing. gopukhanna you may want to start a new thread regarding your question rather then 'hijacking' this one. Your more likely to get an answer to...

A 3 phase ground source heat pump?! How big is this house! Considering the gas or oil consumption that would be involved in a property the size i'm thinking of GSHP must surely be a viable alternative. So long as it's coupled to an under floor heating system on a well insulted house (which new...

If there is a dimmer on the hallway it's most likely knackered anyway courtesy of the CFL on it. It does sound a bit like a loose connection but that would usually result in the light flickering or pulsing a lot.

If your wanting to save energy when using recessed lights in my experience you have a few options. If i was allowing for recessed halogen lights in a room that size i would usually specify ELV fittings (MR16) as they give a much brighter light per watt compared to mains voltage halogen (GU10)...

From what i can gather he has a standard split load, 16th edition style consumer unit with a main switch and a 30mA RCD protecting the socket circuits. Obviously this would mean there is no RCD on the lighting circuits etc and with a high Ze leading to a low PSC on a TT system an earth fault...

Ah the joys of DMX, couldn't imagine having an analogue set up in this day and age. We're currently renovating our theatre (nearly 9 years in now!) and are getting to the stage where we're getting alot of professional shows in. Really need to upgrade the lighting though when we can get some...

No not another theatre spark, i just do some lighting and sound for shows at a local theatre. My day job is all domestic and commercial electrical work thankfully as i don't think i could handle working with the lovies 7 days a week! :lol: Sounds like it's going to be a bit of a mission...

Basic scenario here to explain what you put. Say you have your main consumer unit in your house beside the incoming supply. You then have another consumer unit in your detached garage fed from say circuit 1 of your main consumer unit. You would carry out a Ze test on just your main earth at the...

What sort of sockets are on this trunking? 13A, 15A round pin, 5A round pin or 16A commando? What are you planning on plugging in to these sockets? Are we talking Par 56, Fresnels or something completely different?

Those through crimps are only designed for one conductor in each end. Reds are for 1-1.5mm, blue for 2.5mm and yellow for 4-6mm. If your extending multiple wires then block connectors or 3 pole push connectors would be a better bet. Is this a theatre install?

What sort of NIC certificates are you trying to fill in Kev? I hope they're green ones if your not an NIC member. I'm guessing here but are you looking at the section on the top of the schedule of test results which asks for a Zs, PSC and RCD readings? If this is the case make note of the part...