Discuss Old WLYEX fusebox in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

Ok well I'm not familiar with bs7671 don't work here ,so can be shot down
These days is does, but probably at the time of installation (16th edition) then supplementary bonding was enough for a bathroom installation.

The Best Practice Guide #4 would have C3 for this case (no RCD but bonding good) or C2 if no supplementaty bonding when inspecting things.
How long until the heater tank develops a fault
So long as the CPC is good then ADS is ensured.

Of course, even if the regs did not say so you would still want an RCD for other reasons. Like protecting against the results of cable damage, or to reduce the risk of a double fault being fatal (so #1 loss of CPC and then #2 insulation failure).
 
As I posted in another thread on here recently, the first electric shower I installed had the bare heating wire in direct contact with water flowing through a perspex block. 4mm2 cable, rewireable fuse, and RCDs hadn't been heard of.
 
Ok well I'm not familiar with bs7671 don't work here ,so can be shot down

How long until the heater tank develops a fault
Obviously not talking about all cases but, believe me, there really are much worse things being installed these days than many of the well constructed installations of the period we're talking.
Regulations have tightened and improved, in most cases to good effect. Work standards haven't.
 
Some older installations are a work of art compared with the lashes in new wiring you see today

some recent stuff I come across looks like it was thrown in by a bunch of trained apes
 
These days is does, but probably at the time of installation (16th edition) then supplementary bonding was enough for a bathroom installation.

The Best Practice Guide #4 would have C3 for this case (no RCD but bonding good) or C2 if no supplementaty bonding when inspecting things.

So long as the CPC is good then ADS is ensured.

Of course, even if the regs did not say so you would still want an RCD for other reasons. Like protecting against the results of cable damage, or to reduce the risk of a double fault being fatal (so #1 loss of CPC and then #2 insulation failure).
The rcd will clear the fault
 
The problem with minor upgrades is it tends to prolong the life of the installation

Beyond what it should be
Not quite sure what point you are trying to make here, this is very cheap minor improvement to make a guy's final years a bit easier when a major upgrade might cause that much stress it would see him off and having an RCD would not stop it happening
An instantaneous shower needs an rcd imo

Not sure what bs7671 says on that
I have to chuckle at the blind faith that people have in RCD's when they are more prone to failure than the MCB
That's no problem

Just saying looking at that board with the instantaneous electric shower on an MCB i wouldn't be happy
I never realised as a child the level of risk I was exposed to when the sockets, the shower and for that matter the whole installation had no RCD's then I started work and for a number years myself and the people I worked with did not routinely install RCD's because they weren't around then. But back then equipment was built to last and we worked with what we had and rarely tested anything other than a Pyro when ELCB's (current type) became available we were taught that they were only for secondary protection these days the quality of some equipment that is installed is debatable so I can only surmise that RCD's are needed as primary protection to cover up for poor installation design and the poor quality kit that is available and also to protect people from their own stupidity or that electrician that doesn't know what he is doing
 
I never realised as a child the level of risk I was exposed to when the sockets
Many years ago the real driver for RCD use was folk being killed outside when they mowed through a cable or similar while barefoot or in sandals.

I am in favour of RCD, but also don't like the moves to make them mandatory in all cases (2nd amendment proposal) as I know full well there are places like data centres where RCD are unsuitable for reliability/accumulated leakage issues, but that you still want a non-sparky to be able to swap out a UPS or similar in a hurry if it fails.
 
Many years ago the real driver for RCD use was folk being killed outside when they mowed through a cable or similar while barefoot or in sandals.
I can understand where you're coming from. They were required for domestic TT's and for sockets intended for external use.
Just found this from 15th edition guide....1981, when they were really coming into use.
You can see how things have come on reading the point about them not being suitable for TNC/earth concentric systems. Mind you, although those systems were starting to multiply.....by far the most installations were TNS, anyway.

Old WLYEX fusebox IMG_1828 - EletriciansForums.net
 
You can't be serious? I know it's an outlay and he is a pal but in the long run you are doing him no favours. Nor yourself if it comes back to bite you on the arse.
Stick him a cheap consumer unit in with RCD protection.
 
You can't be serious? I know it's an outlay and he is a pal but in the long run you are doing him no favours. Nor yourself if it comes back to bite you on the arse.
Stick him a cheap consumer unit in with RCD protection.
Another case of that blind faith, it seems......or John McEnroe.
 

Reply to Old WLYEX fusebox in the Electrical Forum area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock