Ask The Trades - Rewireable fuses

LSpark Global Moderator Trade Member Author Offline Posts: 8069 Total Thanks: 3 For This Post: 0 London, UK United Kingdom Gender: Trade: Electrician	Re: Rewireable fuses Reply #17 - May 7^th, 2009, 1:15am I think you're missing the point, the regulation stipulates minimizing inconvenience, not removing it completely. And the main objective after minimizing inconvenience is to reduce possible danger, which is why most contractors are adopting the sockets down with lights up approach.
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Lectrician

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Re: Rewireable fuses
Reply #18 - May 7^th, 2009, 6:33am

Quote:

All im saying is, they are not fully compliant, according to the reg

Thats why I am arguing - because they DO comply.

I'm sorry but I am going to disagree complety.

Alot of consultation went on before these consumer units where put into production, the manufacturers didn't just take it upon themselves to design.

There are best practice guides from the NIC which shows how to use the boards in regards correctly splitting circuits.

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Re: Rewireable fuses
Reply #19 - May 7^th, 2009, 6:54am

LSpark wrote on May 7^th, 2009, 1:15am:

I think you're missing the point, the regulation stipulates minimizing inconvenience, not removing it completely. And the main objective after minimizing inconvenience is to reduce possible danger, which is why most contractors are adopting the sockets down with lights up approach.

Im just thinking a fault on an upstairs ring that knocks out the downstairs lights is inconvenient, especially if its night time and the CU is downstairs somewhere. Some people have lights plugged in etc... to the downstairs ring, but not everybody (OAP's). Same goes if a fault on a downstairs ring knocks out the upstairs lights, people go toilet at night, no lights means a higher risk of tripping and falling down the stairs.

BTW, the username LS is much better than the Krap one you had before Grin

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« Last Edit: May 7^th, 2009, 6:55am by cosbycarl »

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LSpark Global Moderator Trade Member Author Offline Posts: 8069 Total Thanks: 3 For This Post: 0 London, UK United Kingdom Gender: Trade: Electrician	Re: Rewireable fuses Reply #20 - May 7^th, 2009, 8:32am Quote: BTW, the username LS is much better than the Krap one you had before Agreed..it just didn't work out well in reverse.. such a shame.
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squirrel

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Re: Rewireable fuses
Reply #21 - May 7^th, 2009, 8:56am

Quote:

Im just thinking a fault on an upstairs ring that knocks out the downstairs lights is inconvenient, especially if its night time and the CU is downstairs somewhere. Some people have lights plugged in etc... to the downstairs ring, but not everybody (OAP's). Same goes if a fault on a downstairs ring knocks out the upstairs lights, people go toilet at night, no lights means a higher risk of tripping and falling down the stairs.

I think a bit of common sense should be applied to each installation.

Most people, if they get up in the dark, will switch the bed side light on first.

If socket cct has tripped they'll try the lights.

As an aside to this if the CU is in a cupboard I fit a sperate feed from the non RCD for a cupboard light

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« Last Edit: May 7^th, 2009, 8:57am by squirrel »

I've heard it all, I've seen it all, I've done it all&&I just don't remember any of it!

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Lectrician

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Re: Rewireable fuses
Reply #22 - May 7^th, 2009, 9:01am

In my old house I actually have a maintained EM light fitting under the stairs where the consumer unit was. I had a door switch on the hinge side of the door which brought the light on in 'mains mode' so you could see under the cupboard for your shoes, and if the power failed the EM light would come on so you could find that dreaded B6 that had tripped!

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« Last Edit: May 7^th, 2009, 9:01am by Lectrician »

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Re: Rewireable fuses
Reply #23 - May 7^th, 2009, 6:28pm

Lectrician wrote on May 7^th, 2009, 9:01am:

In my old house I actually have a maintained EM light fitting under the stairs where the consumer unit was. I had a door switch on the hinge side of the door which brought the light on in 'mains mode' so you could see under the cupboard for your shoes, and if the power failed the EM light would come on so you could find that dreaded B6 that had tripped!

Thats good thinking of you, not a lot of people would think to do that in their own home!!

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« Last Edit: May 7^th, 2009, 6:28pm by cosbycarl »

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Goodsparks GDPR opt-out Total Thanks: 109 For This Post: 0	Re: Rewireable fuses Reply #24 - May 7^th, 2009, 8:10pm Quote: Thats good thinking of you, not a lot of people would think to do that in their own home!! Yep.... Some of us sad people would.....
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Y3 GDPR opt-out Total Thanks: 109 For This Post: 0	Re: Rewireable fuses Reply #25 - May 7^th, 2009, 8:26pm Thats really tidy. Whats the copex in the trunking for? What make consumer units are they? (they look really spacious) What's the top one for, I can see a timer there? Thanx for the pics on this one!!
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Goodsparks GDPR opt-out Total Thanks: 109 For This Post: 0	Re: Rewireable fuses Reply #26 - May 7^th, 2009, 8:59pm Kopex is for the alarm keypad on the other side of the wall. Boards are memshield, top one's for most of the switched lighting (bath / hall / outside) 24v contactors mean the lights will come on/off when the alarm is set (when I get around to finishing it all off). Seemed like a good idea at the time..........
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LSpark

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Re: Rewireable fuses
Reply #27 - May 8^th, 2009, 10:37am

Quote:

Thats good thinking of you, not a lot of people would think to do that in their own home!!

Yep.... Some of us sad people would.....

Your an electrician so you don't count, ordinary persons usualy wouldn't know much about emergency lighting, or wouldn't consider it.

And by the way, like your wiring, but it's a bit over-kill for domestic surely, still I guess we have a A-Type MEM SPN db too so can't really say too much Roll Eyes

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Lectrician Administrator Trade Member Author Offline Ask The Trades Posts: 8815 Total Thanks: 109 For This Post: 0 Braunton, North Devon United Kingdom Gender: Trade: Electrician	Re: Rewireable fuses Reply #28 - May 8^th, 2009, 12:35pm I like the A boards from MEM - built to last. Must remember to order an incomer each time though - I seem to always forget when I use them!
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The_Trician

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Re: Rewireable fuses
Reply #29 - May 8^th, 2009, 1:58pm

I've only ever seen these A boards employed in installations where home automation is used.

They must be bloody expensive.

Not much change out of a couple of hundred for a 10 way without incomer & CPDs?

Is the busbar all-insulated? I had to feed some bottom entry cables up behind the mcbs in one set-up, and was bricking it about an exposed unseen live busbar lurking behind the MCBs!

TT

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Thats the trouble with a colostomy - you can never find the shoes to match the bag.......

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Lectrician

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Re: Rewireable fuses
Reply #30 - May 8^th, 2009, 2:30pm

The busbar is enclosed in white plastic.

Imagine their type B TP boards, shurnk and turned 90 degrees, with one side of the busbar not present.....if that makes sense!

The A board is really just a single phase B board.

They do expansion cabs which are the A board with no guts, just dinrail. These can be bolted to the top of the A or B boards and through wired.

The A boards are not that much more expensive than their box standard metal clad range of single phase consumer units, but they do need the incomer which puts it up a tad.

We use them fairly often in commercial applications and don't find the price too much of an issue.

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Twobarrows GDPR opt-out Total Thanks: 109 For This Post: 0	Re: Rewireable fuses Reply #31 - May 8^th, 2009, 2:35pm Nice one fatty, you consistenty add absolutely no value to this forum! Quote: Quote: Do rewireable fuses have to be replaced under latest regs? No Take a look at 533.1.1.2
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Goodsparks

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Re: Rewireable fuses
Reply #32 - May 8^th, 2009, 2:41pm

13 way board and the 15 way enclosure (top pic) that lec mentioned were about 80 quid the lot. MCBs and RCBOs were a mix of leftovers really.

Really like the memshield 2 stuff, chunky and well made. (Gland plates take a bit of drilling with the 2" starret though as they are pretty thick)

Got a dual rail 20 way merlin boad off ebay for the shed, that will be overkill

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ChubbyPhaseWire GDPR opt-out Total Thanks: 109 For This Post: 0	Re: Rewireable fuses Reply #33 - May 8^th, 2009, 7:30pm Quote: Nice one fatty, you consistenty add absolutely no value to this forum! Quote: Quote: Do rewireable fuses have to be replaced under latest regs? No Take a look at 533.1.1.2
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