Wylex twin screws

[AndyPRK]

I see there are doing twin screws now. Wonder if it was the DNO's request.


http://www.ebay.co.uk/itm/Wylex-2-P...362?pt=LH_DefaultDomain_3&hash=item4ae74d997a


Also did they ever do an enclosure to suit these ?

http://www.ebay.co.uk/itm/Wylex-100...619?pt=LH_DefaultDomain_3&hash=item4ae7793a73

 

[JohnW2]

I see there are doing twin screws now. Wonder if it was the DNO's request.

Who knows - but it doesn't surprise me. One the the good features of their wonderfully-engineered Standard Range of CUs was 'twin screws' for almost everything.

Also did they ever do an enclosure to suit these ?

Yes, but IIRC it was more of a 'cover' than an enclosure such as we would now use. The device screwed to the backboard and then the (backless) 'cover' screwed to the device. I think I've got one somewhere - if so, I'll take a photo!

Kind Regards, John

 

[kai]

It's a great idea - originally used on their rewireable boards in bygone years. I think it is wise of them, and maybe other consumer board makers, to re-introduce twin clamping terminal screws once more. (M2 boards already do).

 

[JohnD]

Is it not true that tunnel clamps don't need two screws?

View media item 820

 

[RF Lighting]

I can't see how tunnel clamps would work with more than one screw, but I do think that a hole in a piece of brass with two screws directly on to the conductor provides a better connection.

 

[securespark]

I'll second that.

The old MK DP switches had dual screws and some new accessories do too, like Click's 50A DP pullcord switch.

 

[JohnW2]

I can't see how tunnel clamps would work with more than one screw, but I do think that a hole in a piece of brass with two screws directly on to the conductor provides a better connection.

I agree.

As you say, I don't think that a tunnel clamp with more than one screw would really work - or, at least, achieve anything. However, one could presumably have a 'split' tunnel clamp - i.e. effectively two tunnel clamps, each with their own screw, separately and independently gripping the conductor.

It gets a bit more complicated if there is more than one conductor - but both approaches have issues in that situation.

Kind Regards, John.

 

[AndyPRK]

I have now noticed that they are allen key terminals.

When you look closely, there appears to be a brass block through the hole, so could well be grub screws and not tunnel clamps.






EDIT:

Appear to do a twin screw allen key and normal screw head models:


http://www.ebay.co.uk/itm/291451130937?_trksid=p2060778.m1438.l2649&ssPageName=STRK:MEBIDX:IT

 

[RF Lighting]

That does look very similar to the terminals on proper henley blocks (and I don't mean any old service block btw)

 

[ban-all-sheds]

Also did they ever do an enclosure to suit these ?

If it's the same as the switch I have, it's got a DIN rail mounting bracket and it's 3 modules wide, so any small enclosure would do.

 

[Spark123]

http://www.ebay.co.uk/itm/WYLEX-3-M...618?pt=LH_DefaultDomain_3&hash=item1c4fc91d6a