Double insulated down lights cpc

[Alextrician]

whats classes as the correct method of terminating an earth cable when you have double insulated fittings?

You can see on the picture I can’t get a wage inside nor a normal connector block it’s just too tight.

I have seen in the past the cpc being bent over and also snipped off which isn’t recommend just wanted to know the correct way of termination.

 

[Deleted member 26818]

No one is talking minimum csa or bonding or earthing conductors.

Well if minimum CSA is not an issue, why are you agreeing with Wilko?
How is it earthing and bonding conductors can be terminated without enclosures, but the CPC in this instance can’t?

 

[westward10]

I actually have no idea where you are going with this.

 

[Toneyz]

Well if minimum CSA is not an issue, why are you agreeing with Wilko?
How is it earthing and bonding conductors can be terminated without enclosures, but the CPC in this instance can’t?

It's obvious even without a regs book mechanical protection of the conductor especially small conductors of that size.

 

[Deleted member 26818]

It's obvious even without a regs book mechanical protection of the conductor especially small conductors of that size.

That equates to minimum CSA, which according to Westie isn’t an issue.
But as the Regs only state a minimum CSA for CPCs that don’t form part of a multi core cable, what is the issue?

 

[westward10]

When have I quoted minimum csa, as I say I have no idea where you are trying to take this.

 

[Deleted member 26818]

When have I quoted minimum csa, as I say I have no idea where you are trying to take this.

I’m trying to take it where you explain why you disagreed with my post.
So far all you have come up with is a Regulation which states it doesn’t apply to CPCs.

 

[westward10]

I have done that so you are either obtuse or trying to get a rise so I shall leave you to it.

 

[Deleted member 26818]

I have done that so you are either obtuse or trying to get a rise so I shall leave you to it.

Wait a minute, you cited a Reg. I then quoted that Reg. and pointed out the bit where it states that it does not apply.

All you’ve done since is post that it does apply and then made a comment in reply to someone else that suggests I am not willing to listen.
How about you stop with the insults and put a coherent argument forward as to why my suggestion is unacceptable.

 

[DPG]

I think we are in danger of expecting the regs to be absolutely specific about everything. Then the danger is that they end up even more like War and Peace than they are now.

The regs state an earth should be terminated at every accessory. It doesn't specifically say IN the accessory however, but you could assume that's the spirit of it.

 

[Octopus]

ding, ding.......... times out

Lets agree that ALL cables to downlights need to have a continuous CPC from the end of the circuit back to the CU

If a class 2 light is fitted, most of us here would sleeve the CPC and join using a push fit wago....

OK?

 

[Deleted member 26818]

I think we are in danger of expecting the regs to be absolutely specific about everything. Then the danger is that they end up even more like War and Peace than they are now.

The regs state an earth should be terminated at every accessory. It doesn't specifically say IN the accessory however, but you could assume that's the spirit of it.

The problem here, is that there is no terminal provided for the required CPC at the accessory.
This suggests either the accessory doesn’t comply with British Standards, or that a terminal is not required.
If a terminal was provided, it would either have to be outside of the enclosure or if inside, the terminal would have to be insulated as if it were live.
Now if members are so hell bent on enclosing the CPC terminal, then strip back the CPC and cover the CPC, terminal and cable with a choc box.

 

[DPG]

It's not that it doesn't comply with standards, it is just class II. I think terminating outside the fitting is best, as the accessory is not designed to have an earth brought into it.

 

[Deleted member 26818]

Apparently an earth terminal is available, at least according to one of the reviews.

 

[GBDamo]

After 12 hours in a classroom today studying this book I can clarify one thing regarding this issue.......

....and that is I’m none the wiser.







95% thanks for asking

 

[pirate]

As an amateur, I am really intrigued by this. I don't want to get into the semantics, just a practical solution. Let's suppose you have, say, 6 downlighters, loop in, loop out, one after another...no earth terminals on those fittings...if the "earth" isn't used/necessary, why not just "loop" it beside the light fitting, so ensuring there is a continuous cpc available if and when it may be required in the future? Containment isn't an issue if it's not being used, but is a question to be addressed if/when a class 1 fitting is substituted in the future?
Surely that is better than cutting it back/taping it to the outer of the t&e?
Pith helmet on...