Testing Electrical Installation Part One

[16vastraturbo]

ive been looking at trade qualified.co.uk has anybody use these before? they offer a course which comprises of, (Inspection Testing and Certification of Electrical Installations City & Guilds 2391),The 17th Edition, City & Guilds 2382, PAT - City & Guilds 2377, (Domestic Installer Certificate - Full Scope for Part P certification),Essential Electrics - CITB, Appointed Persons First Aid Health and Safety Executive, CSCS Site Safety Card,

is this worth doing will it allow me to work for my self?

[pentagonelectrical]

All circuit design should be done on a individual basis. An RCD can experience nuisance tripping but is a very good safety device - thats the situation. If all circuits in a special location are RCD protected, supplimentary bonding MAYBE excluded (but why would you exclude it??). Any circuit must be RCD protected if cable depth less than 50mm from surface (unless cable has an earthed metalic sheath) but lighting isnt generally held by hand and is therefore less of a shock risk....

[mozer30]

TO all you people say lighting should not be protected by an rcd,what about lighting to a special location? would you run a separate circuit to that location? i was under the impression that ALL circuits in a special location have to be protected by an rcd regardless of cable depth? forgive me if im wrong? im training myself

[Enzo0777]

How do you know that the 2.5mm cable is big enough to carry 8.1 Amps. Cant find it anywhere.

[sean64354]

@Enzo0777 Hi friends this situation that you want to know for each cable amps we have a specific table for electrician which helps us to know the exact size of cable for any amps and also we have the volt drops table also . for the 2.5mm carrying capacity is 19.5amps max .

[Enzo0777]

@sean64354 Thanks Sean is it in the on site guide or in the 17th edition regs. Im studying to become an electrician, busy with level three. If you could let me know what page or table this could be.

Many Thanks

[GEOFFFREWIN]

Nice neat work. Would of done loop test on all socket outlets myself especially as their is no problem accessing them so close.

As said, good work and I'm sure a good apprentice.

[PrankzCCFC]

im thinking of doing a level 3 apprenticeship in electrical installation, is this a good idea? bearing in mind that i dont have any knowledge? + if anyone in coventry is taking apprentices let me know as i have heard that not many electricians take on apprentices anymore

[MrWatcher1234]

this is a really neat job, conduit work is impressive. Just a few questions, would u have allowed ur apprentice to run corrugated conduit at all? Like the short run from the switchboard to the timer and the 2 top left hand corner elbow runs into the switchboard. How long did it take him to do just the conduit work(including mounting block and switchboard etc)? oh btw in australia all new domestic installs has to have RCD protected lights.

[aussiesparky2010]

@MrWatcher1234 true should have no elbows, and no need for corrugated the timer should be mounted against switchboard, this is a good job but always remember u can do better

[chiefbag]

Lighting circuits should not be protected by an RCD.

Also there should be an Isolator switch rather then using a RCD as the main breaker on the incomer. I suppose in the sequel you will show us how you drove a supplementary earth rod beside the shed for good measure.

Amateurs

[pentagonelectrical]

Lighting circuits can be protected by an RCD, if the supplying cables are embedded in plaster etc below 50mm from surface, the circuit must be RCD protected.

The BS61008-1 RCD Main Switch is a suitable isolator, please see table 53.2 in the 17th Edition wiring regs. The installation has a BS60947-3 Isolation Switch at the "incomer" in the main property.

A earth rod wasnt required, the main earthing was used from the installations TNS supply. No additional bonding required. Thanks.

[chiefbag]

@pentagonelectrical It is not good practice to have an inline RCD only in special circumstances, not as a cheap solution for a sub distribution board. You have made measurements which are in no way relevant and/or misleading to the process of testing electrical installations. 1: Took current measurement on a restive device. 2: carried out a low loop impedance test on on circuit, not showing the furthest socket. 3: No reference to exterior lighting claimed. 4: 1 Earth fault will kill all power

[chiefbag]

@pentagonelectrical To Quote yourself Hi,

In this particular application, we considered it acceptable to have all circuits on a single RCD. The reason is that it is installed effectively in a garden office, disconnection is unlikely to cause any problems as the equipment is also powered from a UPS and the RCD can easily be reset within the back-up period.

We did not install a fused switch prior to the consumer unit as it is protected by a 45Amp Type D MCB - no RCD on the supply."

Cowboys

[andymcc99]

@chiefbag Your a mile out, take a look at the latest regulations and then try commenting some useful stuff for people viewing these videos. As someone has already stated and RCD can be used on the lighting circuit and should be used if the were abouts of the cables installed on the circuit cannot be 100% sure, yes thats not the case here but its good practise to install an RCD for every circuit they is not anything wrong with using one.

[TheKrysssy]

good to see you know your wiring rules

[GregBaby]

@chiefbag lighting circuits shouldnt be protected by an rcd? wrong! it depends on the circumstance even this being all wired through surface mounted conduits can you not see that it is an outbuilding?? Wouldnt be good to see the wooden structure burn down would it? and as far as driving in a supplementary earth rod WHY? the correct measurement of ze for this db would confirm the earth being adequate for the install a 3c swa with an integral cpc and the earthed armouring? your the amateur lol

[Techozek]

@chiefbag

What in the world of fuck are you talking about? All circuits shall be protected by a 30mA RCD if they embedded less than 50mm from the surface of a wall.

Isolator switch rather than using RCD as main breaker??? Jeez...

YOU are the amateur.

[xxBRITAINxx]

did u say 13mA or 30mA

[Flo4u2u]

Thanks you great video make me a better electrician! Thanks again I wait for new lessons!

[lankeylively]

hey is it me or do all your conductors in there look perfectly neat and no crossing over each other ??

[dougieladd]

Very nice work. I'm a total dummie with electrical, I'd probably blow myself to kingdom come. But it's really nice to see professiona,l dedicated jobs still being done in this country. Very neat and tidy. Excellent!

One question... is the language you're speaking English :)

[Welthauptstadt1]

Nice tip about the neutral cpc continuity :)

[MrSparkymark72]

Nice job, but not all the equipment looks like they are between 450 and 1200mm. Also you should null out the shorting out leads, not just the test leads. Very neat though.

[sniperusg50]

nice job how much did it cost?

[bizzyfingers]

nice neat work

[pentagonelectrical]

Yes, all items installed at the correct heights.

[airsearescue]

no tape measure but I presume this equipment is installed according to part M section 8 of building regs 450mm-1200mm from finished floor level. You did say this was to be an office/study (habitable)

[Schmiki24]

You heat with electricity? What a waste of energy!

[Breezy129]

Thks for these videos really helped me out for my practical exam

[freemind4ever]

lol fluke,megger, ha ha, try kewtech, kt-64 or kt-65 the guy who designed the fluke, then went to robin/ kewtech with all the feed back he had of sparkys, made the kt-64, the guys name if u dont believe me, which is fair enough is paul rutter, check it out

[ldelectricalsolution]

your trainee has done a top job does he want a job lol

[pentagonelectrical]

It is a good idea to isolate the Consumer Unit before opening, it is a potential risk that the Components on the DIN Rail (Main Switch, MCB's etc) could be loose and cause injury if they fall out when removing the cover for example.

Hope your study goes well.