Found this whilst doing a EICR. Not the lack of markings but its connected up back to front. There did not seem to be any markings saying feed & load.
Would you mention this
- Thread starter SLIPSHOD & SLAPDASH
- Start date
Help Support Talk Electrician Forum:
- Joined
- Oct 22, 2010
- Messages
- 14,621
- Reaction score
- 1,170
Well, it's different!
why on Earth connect the fuse before the isolator?
seems a bit weird...maybe a new EU Reg.
why on Earth connect the fuse before the isolator?
seems a bit weird...maybe a new EU Reg.
so its a fuseswitch and not switchfuse
- Joined
- Nov 28, 2009
- Messages
- 14,837
- Reaction score
- 1,013
Deleted, I was wrong.
Last edited by a moderator:
Nothing against the regs in doing that.
I can't make out the rating of the switch, is the fuse protecting it?
IMO no code, what would you code it against? Other than 'that's not the way I'd do it'.
P.s. I wouldn't do it like that either without a good reason.
I can't make out the rating of the switch, is the fuse protecting it?
IMO no code, what would you code it against? Other than 'that's not the way I'd do it'.
P.s. I wouldn't do it like that either without a good reason.
Discrimination?
It goes against convention and someone could get bitten by it. Personally I’d alter it to the more conventional form.
Last edited by a moderator:
I have not had any luck trying to find the instruction leaflet for this unit. Its a Wylex 110M which has been superseeded, anyone got a link ?
My eyes were playing tricks following those strangely coloured , blue meter tails , specially where they cross behind the others . I thought the polarity was wrong but its not.
However I'm looking at it as ....incoming Live to possibly 80A fuse ..then to a DP switch to isolate the sub- main.
He's discriminated ( probably) by fitting a separate fuse from the Service fuse....he's fitted an isolator to the sub-main .... it does the job ....move on.
However I'm looking at it as ....incoming Live to possibly 80A fuse ..then to a DP switch to isolate the sub- main.
He's discriminated ( probably) by fitting a separate fuse from the Service fuse....he's fitted an isolator to the sub-main .... it does the job ....move on.
completely different. you expect the DNO fuse / terminals to be live at all times. you should also not be touching it either. with a switch fuse, its reasonable to expect the fuse / terminals to be dead when its switched off. at least in this case its a plug in fuse. imagine if it was something with a bolted in fuse. have fun changing that live
Last edited by a moderator:
What is that connecting the fuse to the switch?? Looks like a bent up bit of metal rod to me???
john..
john..
- Joined
- Nov 28, 2009
- Messages
- 14,837
- Reaction score
- 1,013
I believe it's an enamel covered copper link. I have seen that in CU's for the links between main switch and rcd. Never thought much of it as it can't take much to puncture the very thin enamel insulation.
looks normal, some CU manufacturers use a solid copper bar bent to shape with very little insulation
never really liked the idea. its a solid round bar, the actual surface contact area at the terminals will be much smaller than if it was a bit of copper thats a bit softer and takes shape better. but still, they cause less fires than 5DW's
- Joined
- Oct 22, 2010
- Messages
- 14,621
- Reaction score
- 1,170
I have a couple of 110Ms in the garage awaiting to be ebayed
ill see if there are any MIs in the box
ill see if there are any MIs in the box
- Joined
- Feb 14, 2010
- Messages
- 1,147
- Reaction score
- 222
That would be sufficent in my book to be able to quote 134.1.1 as a reg it is non-compliant against. "Good workmanship by competent persons or persons under their supervision....." even if its not specifically against the manufacturer's instructions, its opposite to the accepted custom and practice in the industry and therefore would not be considered "Good workmanship"
phil d
Well-known member
It was obviously wired by someone who didn't know what they were doing, the incoming live and neutral should have been connected to the bottom of the switch, this was a common thing with certain Wylex units iirc, whoever fitted it probably thought it should be fed from the top.
To be honest, I've seen this type of thing once or twice before, I even saw one on a small one way unit where the live feed went into the fuse, and the neutral feed went to the rail, the load was connected to the terminals of the switch.
To be honest, I've seen this type of thing once or twice before, I even saw one on a small one way unit where the live feed went into the fuse, and the neutral feed went to the rail, the load was connected to the terminals of the switch.
