Hi
Permanent live into one side on th N/0 contacts on time clock. Other side of N/O time clock contact to supply photocell. Switched live of photocell onto contractor.
Override switch between permanent live side N/O on time clock and contractor.
Hope this helps.
Hello timhoward
Hummmmmmm this is getting quite deep now, and interesting, we may never get to the bottom of it but lets give it a go 😀😀
Had trawl through the book and came up with this.
411.3.1.2 does reference '' Within a Building'' it however doesn't reference outside of the building...
Lucian
This brilliant. I cant believe you have gone to this amount of effort to help.
Perhaps the best way would take an average of the 125mm² and the 151mm². That's probably a reasonable assumption.
You did mention the lack of 19/.103, this should be 19/153.
if you could assist with the...
Thanks pc1966
Good suggestion. The outer sheath should be easy enough, the thickness will be a bit more difficult though as the cables are in service.
I can ask if there is an old section about to measure. Fingers crossed.
Steve
Hello Lucien
Thanks for your reply. I never cease to be amazed what info is available if you ask.
More than happy to wait a few days. It will probably take that long to dust the cobwebs off.
You are correct with your observations on the cable sizes. Decimal point in the wrong place.
As you...
Unfortunately I am unable to find resistance values for old imperial conductors. 35mm sq and 95mmsq equivalents.
Additionally I an unable to locate the resistance values of the lead sheath .
One option is to measure the longest length cable and do some maths. Problem is it is not possible...
Unfortunately that's not an option at the moment. These cables need to be incorporated into an existing system, with designs demonstrating compliance.
All cables have had insulation resistance tests carried out on them and have perfect readings.
The cost would prohibit replacement at the moment.
Hello
I understand that this may be an impossible one to answer, but I have been surprised on many occasions with what info is out there if you only ask. So here goes.
I am trying to locate historical cable data sheets for paper lead cables that were probably installed in the 1960s
I think...
Gentlemen you have cracked it.
I think it’s time for new glasses
The jumper was on left and centre not right and centre.
Thanks again from a grateful Sparky.
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