Search results

Local switching..... If i want to change a lamp (current using equipment) then isolation by the functional switch is adequate... If i want to repair the hoover etc then either unpluging it and removing from source is adequate... In both above instances switching off at MCB for maintenance is...

The over current protection device in any circuit should be rated in conjunction with the lowest rated conductor in the circuit. Ceiling rose drops wont be subject to an overload. Ive come across lighting circuit`s wired in 1.5mm with 1mm switch drops ( twin brown) and as long as the OPD is...

When carrying out maintenance work on a particular piece of equipment the isolation switch is in your control....without locking off the MCB in a consumer unit situated in another part of the building how can this be in your control?

Hi guy`s and gals Due to a small kitchen im looking to put my washing machine into the detatched garage which is around 3 meters from the house (and the main water supply pipe). Im looking at tapping in and running pipe through the house wall and laying in a trench to the outbuilding but my...

Wow............ Cable from your consumer unit (supply or feed) goes to the terminals marked feed and the terminals marked load take the conductors that go to storage heater.

As is mentioned above it`s totally up to the spark doing the work whether he is happy signing off someone else`s work. If it was me i would go through your install with you marking up in chalk where you are to chase cables and backbox`s in as in kitchens a lot of the routes taken are governed...

Like Tim i was always told the S in Zs stood for supply :?

It all comes under Identification of conductors, if a conductor is to be used as a CPC then it should be identifiable by the colour`s green and yellow and im not 100% sure on this but i think in 3 phase systems that the use of alphanumerical identification is not allowed on cpc`s and they,like...

What other circuit`s are on the RCD side in the Consumer unit? Do you have any computer`s ,pond equipment or boiler supplied by circuit`s protected by the RCD with also protects your oven?

Total Domestic One man band so try not to touch rewires (unless the money`s right) :lol: I also do contract work for a local sound proofing comany where i just basically extend sockets/switches from the old brick wall`s to soundproof boards.

Certainly your sockets and any circuit`s entering the bathroom will have to be RCD protected to 30mA BUT if you have a lighting or other circuit that is surface mounted then because of ADS time`s not likely to be met then those circuits will have to be RCD protected to the tune of 100mA type S...

Yeah upstream RCD protection for me,then anything you add in the future will also be automatically protected. ooops by upstream i mean using an RCD in the C/UNIT in the form of either group protection or singular RCBO. Just bare in mind pond pumps can offer leaky earth current`s and on some...

I get on great with my Metrel Installtest....i bought it when i was training so have done all my work with it.....battery life isn`t too bad either but then again...i`ve never used owt else :roll:

:P sorry atm (email address removed.)

There loads of good books out there that will help with the courses your enroling in. The 4 main ones i have and find invaluable are all IEE`s books.... 1.On site guide (small brown and white book) 2.Electricians guide to building regs (lime green book) 3.BS7671 (the big brown bible 16th...

Yes Plugwash its a dedicated 3ph motor so as you and Steve say its not a problem. The reason i was concerned was the same company had installed a single ph piece of machinary rated at 45amps and used 2.5mm single core cables.

Nice one Steve.... :wink:

Hi guys Im a domestic installer and know very little about industrial electrics but yesterday we had some machinery installed and wired in so last nite,as you do i was inspecting the installation and noticed... 3PH ...6mm Insulated single core phases with a 4mm neutral !!! Is this good...

unfortunately a good search is needed to follow the cable from shower to C.U but if you cant be sure then use the worse case scenario ... All relevant installation methods can be found in various publications (IEE on site guide or BS7671 16TH edition)

For testing cable gauge then a micrometer is what you need. You can buy these from places like MAPLIN or the like, i did and only use it for instances you describe when you cant be 100% sure what size cable your dealing with, although with a few years experience you`ll know a size just by first...