Obsolete/ Older DBs

[atm84]

To avoid me from banging my head against a wall, Can anyone tell me where in the regs it might say, that where the original breakers (MCBs, MCCBs, switch fuses units) are no longer available for a DB or Switch Panel and replacements ones would have to be retrofitted in their place (eg say a bigger mccb is required and square D ones are no longer made and Schneider ones are the current replacement) then the whole panel would have to be upgraded. I am often told by my Senior that the DB or Switch Panel must be replaced in this situation. However my theory is that if the disconnection times of the replacement breakers comply and that its a suitable fit then its not an issue. Could it be something to do with the Form of Segregation in the older boards and Panels that do not meet the current regulations. If so, can some one point me to the Reg number.

 

[Plonker 3]

Aurai, out work must comply with the relevant BS7671 not part P as that is only a building regulation that applies to domestic dwellings.

 

[telectrix]

al you have to do is weigh up the advantages, both those that are deemed necessary and those that will just improve/update the installation against the cost involved, and advise the customer in a honest manner. then the customer decides whether the cost is justified and says yea or nay.

 

[atm84]

Aurai, many thanks for your thoughts, however I was actually referring to commercial installs where Part P is not relevant. Sorry I should have made this clearer.