Had a call today from a farm where I have done work in the past, but not for that last few years, same old story someone cheaper than me stepped in.
Anyway the farm has been visited by H&S and they were concerned that in two buildings there are two 125A TPN+E Commando/Reyroll Sockets mounted below a 3 Phase Distribution Board in each building with no Isolation Switch.
My first thoughts were, well you could open the door to the board and isolate there, so I opened the door and looked for the appropriate TP Mcb, thinking 63A.
This is when it started getting interesting, there was no TP Mcb but there was a 125A TP Switch Disconnecter, where you would expect the mcb to be.
This Distribution board has a 4 Pole 125A Switch Disconnecter and is fed from another building where I assume the main intake is, however I could not get access today so will be popping back.
the other building I had access to has he same.
The 125A supply is for a mobile grain dryer which can be put in either building, and as a 63A TP Mcb is the largest that can fit these boards, the electrician has fitted switch disconnecters, the son advised the dryer is over 63A.
So the fusing that supplies each main board is also the fusing for the 125A socket through the 125A switch disconnecter.
What's your views on this, my first thoughts were no this is not right, but I keep thinking if all cables sizes are correct, is it actually that wrong, with the fusing protecting cabling through it's length.
By the way I was asked to change the sockets to isolation type, that's all.
Anyway the farm has been visited by H&S and they were concerned that in two buildings there are two 125A TPN+E Commando/Reyroll Sockets mounted below a 3 Phase Distribution Board in each building with no Isolation Switch.
My first thoughts were, well you could open the door to the board and isolate there, so I opened the door and looked for the appropriate TP Mcb, thinking 63A.
This is when it started getting interesting, there was no TP Mcb but there was a 125A TP Switch Disconnecter, where you would expect the mcb to be.
This Distribution board has a 4 Pole 125A Switch Disconnecter and is fed from another building where I assume the main intake is, however I could not get access today so will be popping back.
the other building I had access to has he same.
The 125A supply is for a mobile grain dryer which can be put in either building, and as a 63A TP Mcb is the largest that can fit these boards, the electrician has fitted switch disconnecters, the son advised the dryer is over 63A.
So the fusing that supplies each main board is also the fusing for the 125A socket through the 125A switch disconnecter.
What's your views on this, my first thoughts were no this is not right, but I keep thinking if all cables sizes are correct, is it actually that wrong, with the fusing protecting cabling through it's length.
By the way I was asked to change the sockets to isolation type, that's all.
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