UK Can you have 3 13 amp fcus in series on its own radial 16amp with each supplying single socket

[popeyedwazza]

Hi everyone. Im new here...

I need advice on wether it is safe and okay to have 3 × 13amp fcus on its own radial with each having single socket to supply a....

1st) fcu at 13amp-fridge/freezer

2nd) fcu at 13amp-washer/dryer combo

3rd) fcu at 13amp-Dishwasher

They will be protected by 4mm solid core twin and earth cable

Any help appreciated

Thanks in advance!

 

[mainline]

Hi everyone. Im new here...

I need advice on wether it is safe and okay to have 3 × 13amp fcus on its own radial with each having single socket to supply a....

1st) fcu at 13amp-fridge/freezer

2nd) fcu at 13amp-washer/dryer combo

3rd) fcu at 13amp-Dishwasher

They will be protected by 4mm solid core twin and earth cable

Any help appreciated

Thanks in advance!

You don't actually need fcus just 20 amp switches.
Also, the 4 mm depending on installation method etc could be a 32 amp.

 

[popeyedwazza]

You don't actually need fcus just 20 amp switches.
Also, the 4 mm depending on installation method etc could be a 32 amp.

That sounds much better. Didnt think of it like that. I was trying to be over cautious when hadnt needed. Do you think 16amp is too low. I thought 16-20amp was for radial and 32-40amp for ring

 

[popeyedwazza]

You don't actually need fcus just 20 amp switches.
Also, the 4 mm depending on installation method etc could be a 32 amp.

Also as they are built in i need the sockets behind the appliance aswel as an issolator to turn of when not needed/fault inspection ect. That was my reason for fcu so each had isolator?

 

[timhoward]

As above, the FCU's are not required, and in any case it's likely the 16amp MCB would trip before a 13A fuse.
It's hard to summarise installation methods and cable ratings.
One can say that with 4mm cable as long as you aren't stuffing it inside a wall and then surrounding it with insulation you will be ok on a 20 amp MCB.
(A 32 amp MCB is only ok if the cable is clipped directly to a wall for it's entire length, and not inside a stud wall or above a ceiling)

 

[timhoward]

Also as they are built in i need the sockets behind the appliance aswel as an issolator to turn of when not needed/fault inspection ect. That was my reason for fcu so each had isolator?

You can instead use a 20 amp double pole switch.
Something like this:

https://www.NoLinkingToThis/p/british-general-900-series-20a-1-gang-dp-control-switch-white/76090

 

[popeyedwazza]

As above, the FCU's are not required, and in any case it's likely the 16amp MCB would trip before a 13A fuse.
It's hard to summarise installation methods and cable ratings.
One can say that with 4mm cable as long as you aren't stuffing it inside a wall and then surrounding it with insulation you will be on a 20 amp MCB.
(A 32 amp MCB is only ok if the cable is clipped directly to a wall for it's entire length, and not inside a stud wall or above a ceiling)

Cable would be in some areas behind tiles and clipped in a cupboard

 

[popeyedwazza]

You can instead use a 20 amp double pole switch.
Something like this:

https://www.NoLinkingToThis/p/british-general-900-series-20a-1-gang-dp-control-switch-white/76090

Thats excellent. I shall indeed. Thanks

 

[mainline]

Cable would be in some areas behind tiles and clipped in a cupboard

You could always use 6 mm on a 32.

 

[westward10]

You could always use 6 mm on a 32.

How do you propose they terminate 2 × 6.0 into the terminals.