Picture of the week!™

[RF Lighting]

Well folks, it's that time again!

What's wrong with this then?

Just OOI it is supplied via the isolator below, direct from a ~200A DNO incommer.

 

[aptsys]

The numpty's trimmed off the earth on the T&E at the bottom.

 

[securespark]

Is that the sole earth connection, to the angle iron?

 

[JohnD]

conductor sizes

 

[Adam_151]

conductor sizes

Careful there, John, if as I assume those feed switchfuses, then its likely overload protection can be ommitted (which would leave you to calaculate the fault current protection with the adiabatic), or if they are less then 3m and routed where mechnical damage is extremely unlikely then protection could be ommited alltogether! (though a couple do look less than 4mm, so probably cant go that far!!!!)

But then again, I've just come in from the pub, so I could be talking complete *******s!

(well not exactly omitted... placed downstream of conductor... ie switchfuse thats fed from it)

 

[bernardgreen]

How easy was it to open the door and expose those naked busbars ?

 

[Lectrician]

Main tails too small for 200amp, even if the outgoers are feeding switch fuses.

Holes in the sides of the busbar chamber not IPxxB

The rule about using smaller CSA's on supplies to switch fuses etc does not apply to cables below 4mm - There appears to be some 2.5mm there.

Enclosure looks accessible without the use of a tool - wing nuts are not exactly ideal!

Phases not idented correctly on individual outgoing reds.

 

[oharaf]

RF, i'm a new boy on the block, would I be wrong to say.

This is in need of up dating! or possibly perhaps what is not wrong with it?

The earth has me worried, exposed busbars are big concern particularly with those nice finger entries on either side.

What did you do????

 

[RF Lighting]

How easy was it to open the door and expose those naked busbars ?

Frighteningly

One finger tight wing nut to open the cover

 

[Adam_151]

How easy was it to open the door and expose those naked busbars ?

Frighteningly

One finger tight wing nut to open the cover

Protection against direct contact by being clearly identifiable as something that shouldn't have fingers poked into - yes, i'm joking... but the average Joe manages to avoid injury from lamp sockets and food processors

 

[Jim2287]

holes in the enclosure (20mm or so)

 

[Pensdown]

holes in the enclosure (20mm or so)

On a test certificate I call that the "blank look test".

When I see "Protection Against Direct Contact by Barriers or Enclosures Provided During Erection" ticked I normally get a blank look if I ask how they tested it.

 

[Adam_151]

Is that a distinction only on the NICEIC forms?, the IEE ones just have 'barriers and enclosures' and make no distinction between those included in a piece of type-tested equipment, and those fabricated during errection

 

[Pensdown]

It's the NIC's term as it also applies to "barriers or enclosure which although provided in factory-built equipment have been affected by the erection process" i.e. a spare hole when you hit the wrong knockout

Why say it in three words when you can use eleven and charge your members more for the test sheets

 

[daytona]

incorrect identification of conductors.
no busbar shield