Teaser for the Newbies...

[Benjamiin]

Regulation 541.8.436.769954223590.87549004.765 says do what you want, because if you dont then john down the pub who once wired an outside light on a plug top will do it!

 

[D Skelton]

My answer: Yes, but, as the plug is unfused I would be looking to make sure that an adiabatic equation was satisfied before I did. Specifically t ≤ (S[SUP]2 [/SUP]x k[SUP]2[/SUP])/I[SUP]2[/SUP]

Quite comfortable that I'm correct but I'm not too proud to look a ----- if I am indeed wrong. I'm happy to learn the error of my ways

Got me thinking though DW, something I've been doing less of these days on 'ere. Much appreciated!

 

[Darkwood]

Regulation 541.8.436.769954223590.87549004.765 says do what you want, because if you dont then john down the pub who once wired an outside light on a plug top will do it!

This regulation was omitted in the 15th edition and John down the pub also uses BS regs but im sure it stands for something different.

 

[Tiny Spark]

Well this is a interesting question!

I shall not be providing any reg numbers as I dont have a book to hand but I shall say no.
I shall withhold my reasons because I am evil and its tea time

 

[Tiny Spark]

Regulation 541.8.436.769954223590.87549004.765 says do what you want, because if you dont then john down the pub who once wired an outside light on a plug top will do it!

And what is wrong with plugging a outside light in to a socket circuit with a plug top?
Assuming it is adequately protected of course

 

[Lucien Nunes]

Ever tried clamping 1.5 in a 32A plug? Ordinary cheapo plugs don't make a good job of it. How would I know that?

 

[Victor]

Can you just change the plug?

Well are you qualified and have you got your part P?

If so then yes, if not, consult a qualified electrician!

LOL

 

[Tiny Spark]

Ever tried clamping 1.5 in a 32A plug? Ordinary cheapo plugs don't make a good job of it. How would I know that?

Double it over a few times and it will be fine

 

[Benjamiin]

Open up the jet wash, connect the earth with the live and do the same at the plug top, youve got a 3mm live and a 1.5mm neutral, job done, earth's are over rated anyway!!!

 

[Darkwood]

Well the hour is up so here it is ...

With ref' to 430.1 note 4 which states any flexible cables connecting equipment by plugs and sockets to a fixed installation are outside the scope of the BS 7671 with regards to overload protection hence you can see a 13amp fuse on a Vac but the flex is only 0.75mm or 1mm.

The flex fitted by the manufacturer is subject to their own guidelines and spec'd in accordance to the max load the appliance can draw, care to be taken that a standard fused plug top isn't fitted here as the plug top fuse may provide the protection for the flex and appliance.

My example was using an un-fused plug thus all measures will have been taken to ensure maximum current does not exceed flex rating be it motor overload, thermal fusing or control fusing... so the answer to my example is yes i can just up rate the plug top and this would be applicable most of the time but as i said earlier an appliance with a fused plug top will need to be considered with a bit more thought as the fuse could be in place for S/C protection only but may be providing overload protection too.

 

[Tiny Spark]

I would not class a jet wash as a fixed installation?
Unless it was one of those large industrial ones that cant be moved?

So assuming it was portable I would stand by my answer of no as a 1.5mm flex can carry 16A hence would be fitted with a 16A plug which would be fitted to a socket protected by a 16A breaker.
You could change the plug to a 32A plug and plug it into a 32A socket which had been protected by a 16A breaker and dedicated to such a use, However that would not stop someone removing it and pluging it into a full 32A protected socket outlet which would not offer the protection that the flex requires.

Thats my thoughts on the matter anyways LOL

 

[Darkwood]

I would not class a jet wash as a fixed installation?
Unless it was one of those large industrial ones that cant be moved?

So assuming it was portable I would stand by my answer of no as a 1.5mm flex can carry 16A hence would be fitted with a 16A plug which would be fitted to a socket protected by a 16A breaker.
You could change the plug to a 32A plug and plug it into a 32A socket which had been protected by a 16A breaker and dedicated to such a use, However that would not stop someone removing it and pluging it into a full 32A protected socket outlet which would not offer the protection that the flex requires.

Thats my thoughts on the matter anyways LOL

Never said it was fixed and if the manufacturer has an unfused plug fitted it is their responsibility to ensure the flex is suitable for the max current demand even in fault conditions ... they dont know that the socket you plug into is to BS standards and correctly installed so all overload protections necessary would be fitted to their appliance if deemed necessary, this is outside of the BS7671 so the manufacturers can't rely on an unknown system their product may be connected to, if they had a fused plug top this may provide the necessary protection if the item had a risk of running overloaded.

 

[plugsandsparks]

On a pragmatic level, i would look closely at the 32A plug to make sure the cord grip works on a smaller cable and that the terminals or spring clamp can actually make a good contact with the cable core.
Yes you could downgrade the breaker to a more suitable one, which i probably would do if the machine was largely going to be used in that location.

 

[Tiny Spark]

With ref' to 430.1 note 4 which states any flexible cables connecting equipment by plugs and sockets to a fixed installation are outside the scope of the BS 7671

You just did LOL

 

[ian.settle1]

This regulation was omitted in the 15th edition and John down the pub also uses BS regs but im sure it stands for something different.

BS = Beer and Smokes