Pull switch with neon for switched live

[JohnW2]

Only seen in toggle switches etc, never (AFAIAA) in electrical accessories.

Except momentary ones.

I need some enlightening here - what electrical accessories have "momentary DPDT centre-off" functionality?

Of course, if one moves to what I would call electrical switchgear (rather than electrical accessories), one does see DPDT (quite often with centre-off) functionality, as in the sort of changeover switches used to switch between grid and generator supplies, etc. Relays and contactors are also not uncommonly DPDT (although obviously with no 'centre off').

Kind Regards, John

 

[ban-all-sheds]

I need some enlightening here - what electrical accessories have "momentary DPDT centre-off" functionality?

Would you settle for SPDT centre off?

 

[JohnW2]

I need some enlightening here - what electrical accessories have "momentary DPDT centre-off" functionality?

Would you settle for SPDT centre off?

Not really My point was about the 'DPDT' aspect which seems non-existent in relation to (certainly 'domestic') electrical accessories, unless you can produce "the exception which proves my rule"!.

Kind Regards, John

 

[fiercertonks]

No earth required - the fan is double insulated.

 

[JohnW2]

No earth required - the fan is double insulated.

You are undoubtedly going to be told that, even if the fan is double insulated and needs no earth, you are still required by regulations to 'run a CPC (earth)' to it (not the least in case someone subsequently changes the fan to something which does require an earth). It also affords some potential protection should anyone put a nail, screw or drill through the cable at any time!

What sort of cable are you using, and are you using the core intended as an earth as a live conductor?

Kind Regards, John

 

[ban-all-sheds]

No earth required - the fan is double insulated.

You are undoubtedly going to be told that, even if the fan is double insulated and needs no earth, you are still required by regulations to 'run a CPC (earth)' to it

411.3.1.1 A circuit protective conductor shall be run to and terminated at each point in wiring and at each accessory except a lampholder having no exposed-conductive-parts and suspended from such a point.

 

[ban-all-sheds]

Would you settle for SPDT centre off?

Not really My point was about the 'DPDT' aspect which seems non-existent in relation to (certainly 'domestic') electrical accessories, unless you can produce "the exception which proves my rule"!

From memory I thought I could. A cursory search has only found SPDT. I'll have to try harder.

 

[JohnW2]

Not really My point was about the 'DPDT' aspect which seems non-existent in relation to (certainly 'domestic') electrical accessories, unless you can produce "the exception which proves my rule"!

From memory I thought I could. A cursory search has only found SPDT. I'll have to try harder.

Fair enough. However, you've more-or-less proved my point. If there are any 'electrical accessories' (as opposed to 'switchgear') out there which are DPDT (whether ordinary and/or centre-off and/or momentary), they are certainly very few and far between. I've certainly never seen a physical example, and I can't recall ever having seen any 'on offer'. However, there have been a few occasions on which I could have made good use of one!

Kind Regards, John

 

[fiercertonks]

How can I earth a fan when it's all plastic? Also it's in the attic.

 

[ban-all-sheds]

How can I earth a fan when it's all plastic?

You don't earth it - you just terminate the earth there.

Also it's in the attic.

Irrelevant.

What sort of cable are you using, and are you using the core intended as an earth as a live conductor?