[ImBoredDotIe]

Hi,

Was just wondering what should be done when changing an old fuse box to a new distribution board with MCB's RCD's.

When putting in the new board, if some of the cables are too short, is it acceptable to join them in connectors once they are readily accessible? (In a large plastic joint box to act as a header)

I know its not best practice doing this but theres no need for a re-wire.

Thanks

[Bruthal]

A few din rail connectors with the propper locking ones each end of them on the rail in the new board can be used if the cables can reach that far and if there is room.

[TheBody]

Just be aware that in some (usually older) houses people sometimes added in sockets etc by taking neutral from a lighting circuit. This will cause rcd to trip in your new distribution board. Can be a pain in the ass to fix.

[2011]

Buy a board that is has row more than you need. The chance are all of the cables will reach the top row because they reached the previous fuses.

Use the top row to install DIN rail type connectors. These can be bought for just about any cable size.

In work we generally use Weidmuller

Crossed posts Robbie!

[Bruthal]

Originally Posted by 2011

Buy a board that is has row more than you need. The chance are all of the cables will reach the top row because they reached the previous fuses.

Use the top row to install DIN rail type connectors. These can be bought for just about any cable size.



In work we generally use Weidmuller

Its the great minds thing again 2011, as im guessing you answered the OP straight away
Yours is an improved version though.

[Bruthal]

Originally Posted by TheBody

Just be aware that in some (usually older) houses people sometimes added in sockets etc by taking neutral from a lighting circuit. This will cause rcd's to trip in your new distribution board. Can be a pain in the ass to fix.

Can be fun alright, i had a house before about 18 years ago where the RCD was tripping even with the main switch off after fitting the new board. And a few others with RCD tripping problems.

[Bruthal]

Originally Posted by 2011

Crossed posts Robbie!

I know, mad that is.

[2011]

Originally Posted by robbie7730

I know, mad that is.

Here is a picture of a junction box with both 230 VAC and 24 VDC cabling joined using DIN rail type connectors:

[ImBoredDotIe]

Originally Posted by 2011

Buy a board that is has row more than you need. The chance are all of the cables will reach the top row because they reached the previous fuses.

Use the top row to install DIN rail type connectors. These can be bought for just about any cable size.

In work we generally use Weidmuller

Crossed posts Robbie!

Thanks for the replies! The din rail option is a good one and better than the joint box idea!!! Fingers crossed theres not too many problems with the RCD!

[2011]

Originally Posted by ImBoredDotIe

Thanks for the replies! The din rail option is a good one and better than the joint box idea!!!

It is neat and provides a high quality connection.

[M cebee]

Theres a guide in back of rules

the board should be dropped to 2.25 going by the book anyhow

[M cebee]

Originally Posted by robbie7730

A few din rail connectors with the propper locking ones each end of them on the rail in the new board can be used if the cables can reach that far and if there is room.

that's the way a lot of the sub-boards are wired where i work robbie

they came pre-assembled with dinrail connectors on the top-row for the final circuit 'live' conductors

prob fairly standard i guess for sub-boards on large jobs

[2011]

Originally Posted by M cebee

that's the way a lot of the sub-boards are wired where i work robbie

they came pre-assembled with dinrail connectors on the top-row for the final circuit 'live' conductors

prob fairly standard i guess for sub-boards on large jobs

Yes, I just got this small sub distribution board made up:

[Bruthal]

Originally Posted by M cebee

that's the way a lot of the sub-boards are wired where i work robbie

they came pre-assembled with dinrail connectors on the top-row for the final circuit 'live' conductors

prob fairly standard i guess for sub-boards on large jobs

Yea any large boards for final circuits on indistrial sites i ever terminated would be all din rail connectors alright, usually in blocks labeled lighting, general services, power etc, with each block fed from its own main switch on the board.

I used din rail connectors on domestic boards a few times for situations such as in the OP here. Neat and good connections like 2011 said i think.

[IrishSparx]

heres a problem I have been informed about today by a customer!! 6 downlighters in a living room. one of the bulbs blow every couple of weeks . Lighting circiut trips, but also the rcd trips!! borrowed nuetral?? nuetral from light connected to rcd side may be the problem?? any thoughts??

I havent got a look at it, just somebody told me today it has been happening in there gaf. Saying every cupla weeks that same bulb would go. and with it the rcd trips. just had me baffled listening to it. dat fault would make ya pull ur hair out if it wasn jus as simple as moven the neutral. but u tink if it was anything to do with the bulb blowing then that wud be N/L no earth leakage??

Just wondering if anybody has come across this and if they have solved the problem??

Thanks!