night tariff meter change to standard tariff

[Colin188]

I've been asked by a customer to remove four nights storage units and replace the switched fused spurs with single 13amp sockets.
Each unit is fed from a dedicated consumer unit supplied from a economy 7 meter.
I need to remove the meter tails from the night tariff meter and connect the consumer unit that feeds the replaced spurs through the Henley blocks that feeds the main consumer unit.
Is this practice reportable under part P and does the electrical supply companies need be informed.

 

[Andy-1960]

If the off peak tariff is no longer being used I would recommend talking to the energy supplier as usually the normal tariff is more expensive when a split tariff is being used. So they may want to change the meter.

If you need to remove the tails from the off peak tariff meter this will mean cutting the seals and if they choose to change the meter they will know what you have done.

As far as Part P goes I think yes it is notifiable as it is a major modification.

 

[westward10]

Are you going to provide a single point of isolation for both boards.

 

[snowhead]

Ist point of contact for the Customer is the Energy supplier.
They need to know and agree to drop the E7 charges.

It may be that they'll leave the existing meter in and charge the same rate for both tariffs for now, then no tail shifting required.
Or if they want to change the meter then they'll have to move the tails.

 

[Colin188]

Are you going to provide a single point of isolation for both boards.

As the meter tails would be under 3 metres I did not think that single point isolation was needed as the incoming house service fuse would suffice

 

[westward10]

The householder should have a single point of isolation, the service fuse will not suffice.

 

[7029 dave]

The energy provider should do the conversion. It is their equipment, when I change from E7 to standard, e7 tails are disconnected put in blocks, meter changed to single tariff, then its over to Electrician to reconnect to 24hr supply.

 

[Colin188]

The householder should have a single point of isolation, the service fuse will not suffice.

Have not enough room to install single point isolation.
Cannot find any regulation that covers this.
Would signage surface

 

[westward10]

Have not enough room to install single point isolation.
Cannot find any regulation that covers this.
Would signage surface

Reg 537.1.4, signage may apply to large commercial/industrial sites where multiple supplies are present but see no excuse on a domestic. Will the sockets have rcd protection.

 

[Octopus]

The householder should have a single point of isolation, the service fuse will not suffice.

Another of the ill thought out changes to the regs..... If you don't have the knowledge to turn off two switches rather than one, words fail me

 

[Deleted member 26818]

"537.1.4 A main linked switch or linked circuit-breaker shall be provided as near as practicable to the origin of every installation as a means of switching the supply on load and as a means of isolation.
A main switch intended for operation by ordinary persons, e.g. of a household or similar installation, shall interrupt both live conductors of a single-phase supply."

 

[Deleted member 26818]

This requirement is not new, been around for decades.

 

[Colin188]

"537.1.4 A main linked switch or linked circuit-breaker shall be provided as near as practicable to the origin of every installation as a means of switching the supply on load and as a means of isolation.
A main switch intended for operation by ordinary persons, e.g. of a household or similar installation, shall interrupt both live conductors of a single-phase supply."

Reg 537.1.4, signage may apply to large commercial/industrial sites where multiple supplies are present but see no excuse on a domestic. Will the sockets have rcd protection.

No they will not as i will not be changing the consumer unit.
The only other way i can see around this is to supply the old ecconomy 7 consumer unit from a 32 amp mcb on the main consumer unit with 6mm t&e which has a double pole switch disconnector and a 30mA rcd and this should cover all the regs?

 

[Deleted member 26818]

No they will not as i will not be changing the consumer unit.

???

 

[westward10]

You are going to have to provide additional rcd protection because you are creating new socket outlets. The best way to do this is to replace both boards with a single unit.

 

[Deleted member 26818]

What you need to do, is get the DNO to remove the off peak meter and to have ready a dual isolator for them to connect the meter tails into.
Then you can connect both CUs into the dual isolator.
As Westward10 says, you will need to provide RCD protection for the sockets.

 

[westward10]

What you need to do, is get the DNO to remove the off peak meter and to have ready a dual isolator for them to connect the meter tails into.
Then you can connect both CUs into the dual isolator.
As Westward10 says, you will need to provide RCD protection for the sockets.

Problem here he is missing rcd protection with the existing board, suppose you could fit rcd sockets.

 

[Deleted member 26818]

I would assume the OP has already figured out how to provide the required RCD protection.

 

[7029 dave]

The op has not mentioned, whether the E7 CU has rcd protection.?It already may have.

 

[westward10]

I would assume the OP has already figured out how to provide the required RCD protection.

Not according to his reply in #13