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Thanks Noz, I would prefer it before the metal enclosure.  I don't think, with regards to TT this amendment hasn't been thought out.

Hi, I have watched the wylex Amd 3 video.  On TT systems they have a upstream REC2 enclosure with a 100ma S type RCD.  I have spoken to the tech helpline & they say it cannot be used as the enclosure is plastic.  This would really be ideal for TT systems, what your thoughts. Cheers

I was always under the impression that you could not get a 30ma s type rcd.  As 30ma is for shock protection so there should be no delay.  I remember asking about this at college & that is what i was told.

Apprentice87, that is explained really well.  You have explained this in much simpler terms than I&T book. Cheers

Hi, Matty, thank you for that calculation is was good piece of advice.  where did obtain the figure 0.9 for buried direct?  Also where did you get maximum circuit length from? Are you using the 3% VD.as lights on the circuit.   Also if you dont mind could you check this calculation for efli...

Thanks for advice

That is why i wanted in writing from the manufacturer.  Their installation instructions.

Thank you sidewinder

Sidewinder, I haven't measured it yet, i only had a brief look as i was waiting for the manufacturers specification.

I am also concerned about the efli, which is 0.29 for 63a type c circuit breaker.  Any advice

Andy consumer control unit, & rcd is to go into consumer protecting the bed.  Blue duck can you suggest another isolator.

Hi, I have a job to connect up a Single phase sunbed in a salon.  I have telephone the manufacturer for the spec of the sunbed.  They have told me I must use the following; 63A type c circuit breaker, 10mm cable into 63a rotary isolator & the circuit is to be protected by a 100ma rcd.  I...

Hager Sollysta looks good & no problems at all.

If i was you i would stick with your building work, while doing a day a week at college.  I decided to change career at 36 & looked at the short courses but decided not to bother because of the cost.  I thought if i went to college i'd only have to pay £450 for my first year & if i...

When making a query to the tech helpline with regards to tails, on consumer change (domestic).  The service head fuse was 60A, they said I still had to upgrade the tails to 25mm regardless.

Cheers Andy, I know they still comply, I just change anyway.  I have spoken to customer's who have been told they need a new fusebox as 3036's are illegal.  I also read a periodic inspection report not so long ago & the electrician had code 1 for a 3036 fusebox.

Nicky Tesla,  I totally disagree with you, All work should be carried out to the current regulations.  I also find that putting a small ccu next to the existing ccu with an rcd device,  doesn't really take long & protects the whole circuit.  If the protective device is a 3036 I also change...

This has drove me nut's for a couple of days.  It has finally sunk in, I think!!!  Pro Daves 12th post has it in a nutshell as an electrician explained to me this morning.  I have never been taught this at all.  Not even in the 2391.  Thank God for TEF & the clever chaps who help us and keep...

Hi says-les, He could not really explain it to me or tell why putting an rcd into the circuit would not be acceptable.

Hi, I spoke an electrician friend of mine this morning he said I am wrong, He explained it is to do with short circuit line to neutral & told me to have a look at the tables of chapter 7 of the osg guide.  I have had a look & it does say NPsc  with a 30ma rcd.  So how does this work for...