What size RCD for mainswitch

[nrg]

Hi

I recently visited a property who had an old style (Black with yellow button) RCD that was not functioning. It has an old re-wireable fuse board rated at 60amps for the main switch. I replaced the old RCD with a new one (customer didn't want a new CU) and tested to make sure it tripped as should an it did. My question is what size should I have installed (Ampage) when it has a 100amp 1361 Type II Service Head ?

Thanks

 

[davesparks]

An existing 3036 board is perfectly safe if it has not suffered any damage.
For you to say that the installation needs a new CU to be safe is the scaremongering tactic of a cowboy.

If after discussing the possible advantages of replacing the CU the customer doesn't want it done then there is no problem with that.

 

[7029 dave]

Ay but, people want rcd protection these day don't they.?

 

[davesparks]

Do they?

I don't!

 

[Prat P]

An existing 3036 board is perfectly safe if it has not suffered any damage.
For you to say that the installation needs a new CU to be safe is the scaremongering tactic of a cowboy.

If after discussing the possible advantages of replacing the CU the customer doesn't want it done then there is no problem with that.

I would consider it good practice to keep an installation up to date and replacing parts of an old 3036 board would not be what I call good practice although your opinion is different,it does not make me a cowboy. We all employ lateral thinking in this job and it could equally be argued only a cowboy would consider continuing to maintain a board that is/or is becoming obsolete to be acceptable!! For valid reasons why see my previous comment regarding age of equipment etc...
who the hell wants to be looking for fuse wire in 2014 ? Pmsl

 

[7029 dave]

That is called a voltage trip, there was never an RCD there, now you have installed one what is your next move ?

Up front as well.

 

[davesparks]

I would consider it good practice to keep an installation up to date and replacing parts of an old 3036 board would not be what I call good practice although your opinion is different,it does not make me a cowboy. We all employ lateral thinking in this job and it could equally be argued only a cowboy would consider continuing to maintain a board that is/or is becoming obsolete to be acceptable!! For valid reasons why see my previous comment regarding age of equipment etc...
who the hell wants to be looking for fuse wire in 2014 ? Pmsl

And if the customer doesn't want their perfectly safe 3036 board replaced? Would you just walk away and not do anything about the faulty voelcb ?

Plug in 60898 MCBs are a viable upgrade for such boards without changing the whole board

 

[Prat P]

And if the customer doesn't want their perfectly safe 3036 board replaced? Would you just walk away and not do anything about the faulty voelcb ?

Plug in 60898 MCBs are a viable upgrade for such boards without changing the whole board

If after being made aware of the facts the customer didn't want to replace th board as long as I have done my job as best as I could by giving correct advice,then obviously just change the main switch or whatever needs replacing,that is not quite the same as 'doing what you are asked to do or walk away'. Keywords being GOOD PRACTICE. I am genuinely struggling to call the maintaining of a rewirable board GOOD PRACTICE , in the given scenario but horses for courses.

 

[Guest77]

I would consider it good practice to keep an installation up to date and replacing parts of an old 3036 board would not be what I call good practice although your opinion is different,it does not make me a cowboy. We all employ lateral thinking in this job and it could equally be argued only a cowboy would consider continuing to maintain a board that is/or is becoming obsolete to be acceptable!! For valid reasons why see my previous comment regarding age of equipment etc...
who the hell wants to be looking for fuse wire in 2014 ? Pmsl

I have to agree with dave spark, sorry but there you are, and I still am intreagued why you removed a perfectly good double pole isolator from the system, you only had to remove the earth wire and the black and yellow thingy lol would have been wonderful for anyone in the future replacing the DB should the householder decide to spend some of their money.

 

[Guest77]

Post the Invoice?

Yes I don't doubt it

 

[Guest77]

If after being made aware of the facts the customer didn't want to replace th board as long as I have done my job as best as I could by giving correct advice,then obviously just change the main switch or whatever needs replacing,that is not quite the same as 'doing what you are asked to do or walk away'. Keywords being GOOD PRACTICE. I am genuinely struggling to call the maintaining of a rewirable board GOOD PRACTICE , in the given scenario but horses for courses.

The fact is an RCD was fitted in place of a double pole isolator, if RCD protection is something the householder requested then a split dual RCD board not much more expensive than the work already carried out, the householder got robbed, they have to pay twice now

 

[Silly Sausage]

No didn't confirm that the head was actually 100amp

I'm intrigued now, if you didn't pull the fuse, did you work Live?

 

[Guest55]

I thought this forum was here to help improve the quality of electrical installations in the UK

well you are wrong by a country mile sunshine.

we're not here to hold the hand of those whom are not sure of what the ---- they are doing.

try your local college.

 

[Prat P]

The fact is an RCD was fitted in place of a double pole isolator, if RCD protection is something the householder requested then a split dual RCD board not much more expensive than the work already carried out, the householder got robbed, they have to pay twice now

That was 1 of my points,someone then suggested using plug in mcb's but they wouldn't have offered the RCD protection that GOOD PRACTICE recommends,all this messing around replacing voltage trips with RCD could be avoided,THE BOARD WANTS AN UPGRADE. NO RCD PROTECTION. Job done.

 

[TJ Anderson]

If after being made aware of the facts the customer didn't want to replace th board as long as I have done my job as best as I could by giving correct advice,then obviously just change the main switch or whatever needs replacing,that is not quite the same as 'doing what you are asked to do or walk away'. Keywords being GOOD PRACTICE. I am genuinely struggling to call the maintaining of a rewirable board GOOD PRACTICE , in the given scenario but horses for courses.

Well, you have given them the choice, that is all you can really do. Assuming it is still TT, I would have thought an insulated Dual RCD Consumer unit would have been a worthwhile upgrade, in particular reducing the disruption of single circuit earth faults.

 

[Guest77]

That was 1 of my points,someone then suggested using plug in mcb's but they wouldn't have offered the RCD protection that GOOD PRACTICE recommends,all this messing around replacing voltage trips with RCD could be avoided,THE BOARD WANTS AN UPGRADE. NO RCD PROTECTION. Job done.

Look if you spoke to the customer and they asked for an RCD upfront and were happy with that and thats all you did then fair enough.

 

[Prat P]

well you are wrong by a country mile sunshine.

we're not here to hold the hand of those whom are not sure of what the ---- they are doing.

try your local college.

Do they do a course at your local college for toning down your arrogance? Its nice to be important and its important to be nice....sunshine

 

[Prat P]

Look if you spoke to the customer and they asked for an RCD upfront and were happy with that and thats all you did then fair enough.

Read the thread from the start you will see that's what I suggested,others had the view that you just turn up do what your asked and walk away without making recommendations.

 

[gaz101]

old style (Black with yellow button) RCD that was not functioning.
how do you know
not meny people have a tester for a volt trip

gaz

 

[Deleted member 9648]

Do they do a course at your local college for toning down your arrogance? Its nice to be important and its important to be nice....sunshine

He's already done the 'toning up arrogance' course mate....he's earnt the right to be arrogant on here.

 

[Deleted member 9648]

old style (Black with yellow button) RCD that was not functioning.
how do you know
not meny people have a tester for a volt trip

gaz

press yellow button see if trips?