electric shower in outbuilding

[Toneyz]

What about a 80A 3 phase switch-fuse in another meter box next to one with meter/cut out or if you think that after diversity the demand will be no more than 50A from house consumer unit.

 

[davesparks]

What about a 80A 3 phase switch-fuse

I can kind of see where you're going with this, but I'm not sure you'll get one small enough to fit in a meter box sensibly.
Plus I don't like the idea of a metal switchfuse in a meter box which doesn't really provide much in the way of waterproofing

 

[Taylortwocities]

Where's the over current protection for that bit of white T&E cable. I can only see the service fuse..

 

[Toneyz]

I can kind of see where you're going with this, but I'm not sure you'll get one small enough to fit in a meter box sensibly.
Plus I don't like the idea of a metal switchfuse in a meter box which doesn't really provide much in the way of waterproofing

100A Eaton Glasgow (reduced fuse size) but all depends on if after diversity the outbuilding can come off house consumer unit on 50A mcb

 

[davesparks]

100A Eaton Glasgow (reduced fuse size) but all depends on if after diversity the outbuilding can come off house consumer unit on 50A mcb

In my xperience they go rusty rather quickly in damp environments like this.

I thought when you said TP switchfuse you were suggesting using the L1 fuse for the house and the L2 fuse for the outbuilding, I can't see why you'd want a TP one otherwise on a single phase supply.

 

[Toneyz]

In my xperience they go rusty rather quickly in damp environments like this.

I thought when you said TP switchfuse you were suggesting using the L1 fuse for the house and the L2 fuse for the outbuilding, I can't see why you'd want a TP one otherwise on a single phase supply.

TP and switched N and yes fuse for L1 and L2 I take the point of if in a damp environment .I think Legand do a IP enclosure with din rail and have DP switches and fuse holders could be an idea

 

[davesparks]

TP and switched N and yes fuse for L1 and L2 I take the point of if in a damp environment .I think Legand do a IP enclosure with din rail and have DP switches and fuse holders could be an idea

Personally I wouldn't be trying to reinvent the wheel, KMF switchfuses fit nicely in a meter box alongside the meter etc, so will be fine with two in an empty meter box.

 

[J.C.E]

the wylex amd 3 switch fuse isolators litterally just fit side by side!!!
enough room at the top to have a tails gland and make the swa off at the bottom

 

[davesparks]

the wylex amd 3 switch fuse isolators litterally just fit side by side!!!
enough room at the top to have a tails gland and make the swa off at the bottom

Again they are going to be painted metal which is not suitable for the environment of a meter cabinet, it will rust.

 

[Toneyz]

Again they are going to be painted metal which is not suitable for the environment of a meter cabinet, it will rust.

Sorry I thought that I replied to your concerns regarding rust I thought I posted back perhaps Legrand IP enclosure with main switch and fuses

 

[J.C.E]

Sorry I thought that I replied to your concerns regarding rust I thought I posted back perhaps Legrand IP enclosure with main switch and fuses

wouldnt comply with amd 3

 

[Toneyz]

wouldnt comply with amd 3

in a external meter box

 

[davesparks]

in a external meter box

Strictly speaking that is irrelevant to Amd3 compliance, the requirement for non-combustible CU specifies domestic premises. By definition the premises includes everything within the boundaries of the property whether internal or external.

 

[Toneyz]

wouldnt comply with amd 3

have you worked out what the load is after diversity that could be put on the 50A mcb

 

[J.C.E]

have you worked out what the load is after diversity that could be put on the 50A mcb

its 'future plans'- so they dont really know yet
I have allowed for a 63a switch fuse isolator with 35m of 16mm swa