3036 fuses - when?

[Larnacaman]

Alchemist, There is no way you should receive (or accept) a "Torrent of abuse " on this forum . Other Forums ... I couldn't possibly comment!!!"Torrents of abuse" tend to come from " Know it alls" who use the internet to **** people off and generally bully people . Not what this Forum is about . :Welcome:

Well pointed out Evans Electrical, and well said too!!! Those ''know it all's'' tend to know far less than they think they do too....

 

[alchemist]

Does it need upgrading if not up to the 17th edition? What if there are no RCD's? opcorn

As I understand, it doesn't have to be upgraded or have RCDs. Regs aren't retrospective.

I recommended a CCU upgrade though, particularly to get the benefit of RCDs. I gave no RCDs a code 4. If there were sockets in the bathroom i'd have given a 1 - as it would be, frankly asking for someone to get electrocuted.

I found the ring main was open circuit on all 3 conductors. I gave that a 1. Actually I think it should have been a 2 but I feel comfortable with 1, because if they overload one leg of the ring they risk melting some cable and it might conceivably end up starting a fire, because their 3036 won't break.

At least a modern MCB would trip under that circumstance as I believe it is triggered by temperature for overcurrent?

 

[Larnacaman]

As I understand, it doesn't have to be upgraded or have RCDs. Regs aren't retrospective.At least a modern MCB would trip under that circumstance as I believe it is triggered by temperature for overcurrent?

alchemist,

Correct, The regs have Never required retrospective upgrading from a previously complying installation. Many can't quite understand that and think, the installation in now ''unsafe'' ....It Is Not!!!!

Both forms of over current protection is based on temperature/heat. The MCB via a bi metal element (over current or timed) and the fuse by the heating effect of the current passing thru the correctly sized fuse wire.

Which is why it is very important in 3036 rewireable fuses to only use a correctly sized fuse wire. Often the ability to rewire these rewireable fuses, has lead to the use of a higher current capacity fuse wire, than the circuit(s) were designed for, ....so have always been prone to abuse...

.

 

[sparkytim]

Are any of the existing sockets LIKELY to be used to supply equipment out side? (Lawn mower, hedge trimer, Vac clean the car etc)

If so as RCD protection WAS a requirement previous to the 17th then that would require a Code 2.

 

[Larnacaman]

Not necessarily so, .....There are installations that fully complied with the Regs of there time, Before RCDs were available.

It wasn't until sometime in the life of the 15th edition that ''outside'' socket outlets needed RCD protection and not until the 16th, that a socket outlet, that was ''likely'' to supply outdoor equipment required RCD supplementary protection...

EDIT....

Sorry Tim, misread your post.... Yes if it was required previously, then that requirement still exists today....

 

[binky]

Was the back of the fuseboard wood? if so its at least 25 years old roughly. Did have a date for phasing out of woody wylexs but have forgotten it and can't think where i saw it.

 

[Larnacaman]

binky,

As i remember those old Wylex CUs, ...they were completly backless, just the back square frame was made of wood. The idea, was actually not a bad one, where all the circuit cables came directly out from the wall. But a real pig if you needed to add a surface circuit or an extension. Normally you had to chop the back wall behind the wood frame to get the cable into the CU!! lol!!! :coffee

 

[Nicky Tesla]

Alchemist, There is no way you should receive (or accept) a "Torrent of abuse " on this forum . Other Forums ... I couldn't possibly comment!!!"Torrents of abuse" tend to come from " Know it alls" who use the internet to **** people off and generally bully people . Not what this Forum is about . :Welcome:

SHUT IT FREAK....LOL Wet Fish