Extractor Fan help

[Simonslimline]

irrevelant. what's more to the point is what is this northern barbarian ( pennychew) doing coming down to rape archy's cattle and rustle manchester women?

So is a cpc required in an installation/circuit that relies on double or reinforced insulation for both basic and fault protection?

 

[Bobster]

Think about where you might have seen a circuit without a 'cpc'.

As a second year app I'm guessing you've probably seen a few.

 

[Simonslimline]

Think about where you might have seen a circuit without a 'cpc'.

As a second year app I'm guessing you've probably seen a few.

Only some lighting circuits in older installations spring to mind.

 

[Bobster]

That was allowed at one point. Not anymore.

Maybe im being mean as you could argue the immediate circuit I'm thinking off falls outside of 7671.

 

[Silly Sausage]

So is a cpc required in an installation/circuit that relies on double or reinforced insulation for both basic and fault protection?

You could have Class 2 equipment that doesn't require an Earth, but .........
Or you could have a circuit which doesn't require a CPC, which would be ...?
Also, find the reg about taking a CPC to every point.

 

[Simonslimline]

That was allowed at one point. Not anymore.

Maybe im being mean as you could argue the immediate circuit I'm thinking off falls outside of 7671.

Im a bit lost now

 

[Bobster]

Dno...

 

[pennychew]

Dno...

Neither do I!

 

[pennychew]

I was thinking of a tt supply when you first commented

 

[Simonslimline]

Dno...

A distribution circuit with pen condcutor then I guess. So this would come under ESQCR?

 

[Simonslimline]

You could have Class 2 equipment that doesn't require an Earth, but .........411.3.1.1 still applies.
Or you could have a circuit which doesn't require a CPC, which would be ...? This is where im slightly confused.
Also, find the reg about taking a CPC to every point 411.3.1.1.

See bold text

 

[pennychew]

If that dog hadn't ate that van with my regs book in I'd have nailed this one by now

 

[Silly Sausage]

Or you could have a circuit which doesn't require a CPC, which would be ...? This is where im slightly confused.

Hint...Voltage bands!

 

[Simonslimline]

Hint...Voltage bands!

So ELV then.

 

[happysteve]

So is a cpc required in an installation/circuit that relies on double or reinforced insulation for both basic and fault protection?

Good question. Depends whether it's under effective supervision or not:



Relevant regs: section 412, specifically 412.1.3 and 412.2.3.2.

I was wondering about the protective measure of electrical separation. Let's say for argument's sake, limited to the supply of one item of current-using equipment supplied from one unearthed source with simple separation (413.1.2). Reg 413.3.5 seems to imply that no CPC is needed. I'm not sure what value a CPC would have where electrical separation is used as the method of fault protection.

If you're looking for the reg that says you have to run a CPC everywhere*, then have a butchers at 411.3.1.1 <--- EDIT: I see this was answered in the time it took me to write all this.

* almost everywhere. Lampholders having no exposed-conductive-part hold a special place in our hearts...