help identify service head and cutout or isolator switch

heavyduty · 27 Apr 2011

Hi

I am a complete donut when it comes to this stuff.

Please can someone tell me what those two components underneath the henley blocks are?

Is that a double pole isolator switch on the left and a service head on the right? Can a DNO change both of these things?

I told you I was a putz...

Many thanks,

Rav

Untitled

heavyduty
27 Apr 2011
1

securespark · 27 Apr 2011

Under the Henley blocks to the LHS of the meter is an old Wylex standard CU 2 way and to the right of that, the intake and cutout. TN-S by the look.

DNO may change the cutout if the fuse cannot be upgraded (if you request a 100A supply) or if the Ze is awful (> 0.8 ohms).

ban-all-sheds · 27 Apr 2011

On the left is a 2-way fusebox, not a DP isolator (although it has one as its main switch). It's nothing to do with the DNO - they won't change it.

But they might get snotty about it being on the same board as their cutout, especially if it's in the way of a new one.

Why do you want a new one, BTW?

And has that fusebox got an earth connection?

Stoday · 27 Apr 2011

It looks as though the Henly blocks replaced some other sort of gear.

ban-all-sheds · 27 Apr 2011

Probably a wooden board with a 4-way Wylex.

ricicle · 27 Apr 2011

What puzzles me is that someone who confesses to being a 'donut' and a 'putz' knows what Henley blocks are

heavyduty · 27 Apr 2011

ricicle said:
What puzzles me is that someone who confesses to being a 'donut' and a 'putz' knows what Henley blocks are

lol. indeed, a little knowledge is a dangerous thing. i'm piecing it together by reading as much as i can online and have picked up on some of the lingo.

i've booked a qualified electrician to update everything to the new 17th edition specification but feel i should have a basic understanding (e.g. 'this does that'), and not be utterly oblivious to what work needs to be carried out and what components are involved and how they all integrate.

Rav

westie101 · 27 Apr 2011

Yes looks like a 60/80A cut-out with a 2c.0225 (16mm) copper cable, quite capable of being uprated to 100A but looks to be in good condition.

BAS is right about the board, but I doubt the CU would be in the way.

diynot

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help identify service head and cutout or isolator switch

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