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AD3 says about contentment of fire .not which way the front door flap is up or down or side to side.
just think the mcbs are made of plastic .
just think the mcbs are made of plastic .
Discuss Using Type D MCB for discrimination in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
No props using a TPN one though.I agree that some type of fuse arrangement is the best option but is the supply not single phase? I have never seen an SP&N busbar chamber.
I agree but it is a big out lay when a main switch and service terminal blocks through to switch-fuses will serve the purpose.No props using a TPN one though.
AD3 says about contentment of fire .not which way the front door flap is up or down or side to side.
just think the mcbs are made of plastic .
I agree but it is a big out lay when a main switch and service terminal blocks through to switch-fuses will serve the purpose.
I agree with the OP though that on a new install, service terminal blocks (or Henley/Isco blocks that you love them being called) look like shyt. If I could hide them in the trunking then might consider it but if not I'd rather weigh out on a busbar chamber. Could pick up a 100A one up for about £180...in the grand scheme of things I don't think it's that much when rewiring a big HMO.I agree but it is a big out lay when a main switch and service terminal blocks through to switch-fuses will serve the purpose.
I agree that some type of fuse arrangement is the best option but is the supply not single phase? I have never seen an SP&N busbar chamber.
Good luck getting five 16.0 or 25.0 swa cables into that.
I think we've been here beforeBus bar chamber and switch fuses...it's fit for purpose and designed for the job. Out of meter into a 100A switch disconnector, into bus bar chamber, length of trunking slotted sat on top with paxolin between, bush switch fuses on to trunking, link bus bar chamber and switch fuses with singles in the trunking, gland SWA's into the switch fuses...Job done.
Think the OP is trying to reinvent the wheel though . I can understand where the OP is coming from as he might be competing against idiots that wouldn't know what discrimination is...Let alone how to design discrimination into the installation. If its detailed properly in a quote then it shouldn't be a problem...Unless the customer just wants the cheapest quote and couldn't give a hoot about the standard/functionality of the installation...Then if I was him I'd say good riddance.I think we've been here before
Think the OP is trying to reinvent the wheel though . I can understand where the OP is coming from as he might be competing against idiots that wouldn't know what discrimination is...Let alone how to design discrimination into the installation. If its detailed properly in a quote then it shouldn't be a problem...Unless the customer just wants the cheapest quote and couldn't give a hoot about the standard/functionality of the installation...Then if I was him I'd say good riddance.
I agree with the OP though that on a new install, service terminal blocks (or Henley/Isco blocks that you love them being called) look like shyt. If I could hide them in the trunking then might consider it but if not I'd rather weigh out on a busbar chamber. Could pick up a 100A one up for about £180...in the grand scheme of things I don't think it's that much when rewiring a big HMO.
Never mind a single phase bs88 board......I recently had a 'qualified' bloke telling me that bs88 3 phase were no longer satisfactory.....'you've got to have a TP breaker because if a fuse goes you won't isolate all phases'......plonker!I think you are spot on,
This installation seems to fit between commercial and domestic, both industries are served well, but there is nothing in this middle ground. Lots of commercial distribution options, but in this case it’s now obvious none of the manufacturers have designed a SP board for BS88 fuses.
I challenged the wheel, come come full circle. Cheers guys.
In this case that's probably going a bit too far, cost wise especially. Small bb chamber and sw/fuses, as Lee says.I agree with LSK
With what I have heard in regards to the design of this job already, you have to spend some sort of money on a decent well structured submains system.
Get a Ryefield and do it properly IMO.
Would hate to see cables flapping about connected into Henley’s.
63A sub mains board off a 32A MCB? - MyBuilder - https://www.mybuilder.com/questions/v/6030/63a-sub-mains-board-off-a-32a-mcb mmm.Hi MWG - I feel your pain and don't mean to add more, but iirc the supply is 100A and it's split 5 ways, so is 5 distribution circuits with 63A ocpd right? Perhaps the rooms can run on the 32A fuse arrangement or does the supply need looking at? Apologies if you've already covered this or if I've misunderstood
Buzz
what .Buzz
Wouldn't include link to" my builder " question board as that 1st response is not particularly accurate in this case , I wouldn't listen to his advice.
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