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what sort of service protective device is this?

Former Community Member
Former Community Member
hi went to look at a job and the main fuse is one I didn't recognise and couldn't find one like it online can anyone tell me the code for it?62db4c3504b194a9635f56c32652f402-huge-img_1511.jpg
Parents
  • That head is going to contain a BS 1361 fuse rating unknown. It is on a loop supply so not likely to be a 100A.


    You cannot have a vehicle charging point on a loop supply so if this is being considered contact the DSO (AKA DNO).


    BS 951 clamps were fitted to PILC lead sheaths by the million up until about 2005.Nowdays they are replaced with a Hepworth constant pressure spring fitted over a braid having cleaned up the lead with a bit of wire wool and then all taped over with self amalgamating tape. No more sweating a conductor on to the lead as that is indoor hot works which presses all the H&S alert buttons.


    Don't try and tighten the 951 yourself as you could crush the lead and short the conductors together through the paper insulation unless you are wearing your brown trousers and full face protection.

Reply
  • That head is going to contain a BS 1361 fuse rating unknown. It is on a loop supply so not likely to be a 100A.


    You cannot have a vehicle charging point on a loop supply so if this is being considered contact the DSO (AKA DNO).


    BS 951 clamps were fitted to PILC lead sheaths by the million up until about 2005.Nowdays they are replaced with a Hepworth constant pressure spring fitted over a braid having cleaned up the lead with a bit of wire wool and then all taped over with self amalgamating tape. No more sweating a conductor on to the lead as that is indoor hot works which presses all the H&S alert buttons.


    Don't try and tighten the 951 yourself as you could crush the lead and short the conductors together through the paper insulation unless you are wearing your brown trousers and full face protection.

Children
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