Member postings for Chris Pearson 1

Here is a list of all the postings Chris Pearson 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Peculiar electrical problem
24/09/2023 18:43:38
Posted by Peter Cook 6 on 24/09/2023 11:58:56:

Sounds like individually the invertors don't have enough leakage to trip the RCD, but when on together the sum total is big enough to so do.

Agreed.

Unfortunately, sufficiently sensitive clamp meters which could measure the current in the CPC are rather expensive.

And yes, you could put a AVO meter in series with the CPC, but there are risks attached!

Thread: Gib Adjusters and the English Language!
22/09/2023 12:17:57
Posted by Nigel Graham 2 on 21/09/2023 22:16:50:

My steam-wagon's ancestors were built in Bourton, near Gillingham. The North Dorset one.

I asked a friend from Sherborne, not ever so far from there, if Gillingham or Jillingham.

"Gillingham - hard G", he replied. "Soft G for the Kent one. Easy to remember - we're 'ard in Dorset!"

IIRC the one near Beccles on the Norfolk/Suffolk border is pronounced locally with a hard G.

What you need in this instance is a copy of the BBC Pronouncing Dictionary of British Names.

21/09/2023 20:19:37
Posted by Paul Rhodes on 21/09/2023 14:22:21:

As in all language there is not a correct pronunciation, merely one in common usage which often alters through time.

Gibraltar was originally a Moorish colony named after its conquerer as Jabel Tarik...Tarik's mountain. So easy to see the corruption to Gibraltar with a soft G or J.

Having worked there, I can certainly confirm that the "G" in "Gibraltar" is a soft g

Let us pity poor Johnny Foreigner who is learning English - how is he to know how to pronounce the language when we cannot agree amongst ourselves?

21/09/2023 08:04:43
Posted by Peter Greene on 21/09/2023 01:11:06:

My OED CD for what it's worth gives:

gib, n.5

(dʒɪb, gɪb)

Which seems to suggest that either one is at least common usage.

As does the online version of the OED. That is for British English, but apparently it is always a soft "g" in the USA.

Personally, I have always used a soft "g".

Thread: electrical fault puzzle
19/09/2023 22:59:36
Posted by Robert Atkinson 2 on 19/09/2023 12:37:48:

That is very strange. Turning on either set of lights causing an over-current trip implies a common fault or fault load before the switch just under the trip point. Neither of these has an obvious cause. It would require knowledge of the exact wiring arrangement right down to the connection methods used.
What type and rating of lights?
What rating circuit breaker?
What brand of switches etc?

The next step as an electrician would be some measurements, insulation resistance and load current and a detailed inspection..

Well yes.

If we exclude an (earth) fault and inrush, what is left?

If the cables are T&E in plastic mini-trunking, how could they have been damaged? In any event, surely they can be inspected.

19/09/2023 20:53:32

I still think that you need to look at the inrush current. It may be marginal, and it may be temperature dependent.

This may help.

Thread: Tap compatability
19/09/2023 20:23:15
Posted by JasonB on 19/09/2023 19:34:50:

Below 1/4" UNF and UNC use a number system rather than the nominal diameter so yes #10-32 UNF is their nearest to 3/16" dia and you can happily thread 3/16" rod to that size.

If you happen to have 2BA that will also do for 3/16"

Ignoring the angle!

Thread: electrical fault puzzle
19/09/2023 20:21:25
Posted by Robert Atkinson 2 on 19/09/2023 19:45:12:

Yes he has " Consumer unit is a main 60ARCD with 4 MCB's the lighting circuit NIDCB06 "

So RCD on input and 6A MCB feeding four switched light circuits. My understanding is that the fault WAS if EITHER of the two internal light circuits were switched on the 6A MCB tripped.

I see what you mean - appropriate spacing might have helped. Given that the incomer is not tripping, that seems to rule out an (earth) fault.

Another possibility is excessive inrush current, which is tripping the type B MCB.

19/09/2023 19:10:42
Posted by pgk pgk on 19/09/2023 11:47:59:

Breakers fir each row of wall sockets, one breaker shared between both runs if ceiling lights and fourth breaker for external security lights .

You haven't specified the type of "breaker". Is the relevant one an RCBO or MCB; and what is the type and current rating please?

Thread: Myford ML 7 Top Slide
15/09/2023 22:15:44

I cannot answer the first question, but the grubscrews are filling the holes which are used to locate the ratchet of a 4-way tool post. They keep out your frass.

Thread: Building a car from scratch
08/09/2023 21:09:11
Posted by duncan webster on 08/09/2023 00:59:12:

I remember 14% mortgages ...

That'll test your household budgeting! I bought my first house circa 1986 with mortgages at that level. A modern car was out of the question, which meant that mechanical skills including welding were essential. How times change!

ETA: 5% MIR is normal.

Edited By Chris Pearson 1 on 08/09/2023 21:10:01

Thread: A blast from the past
08/09/2023 20:55:12
Posted by Ady1 on 08/09/2023 19:53:06:

You used to see electric irons plugged into lightbulb sockets. Happy days.

Ah yes. With the shadows moving around in time with the motion of the smoothing iron.

Thread: Courier problems
08/09/2023 09:12:44

When we moved in, our house did not appear in the postcode database, which caused all sorts of bother when filling in our address online, etc.

Not only did it have a different name when it was built, but it was also in a different street. thinking The water board still uses the old address, but the bills always find us.

06/09/2023 22:31:19
Posted by Chris Crew on 06/09/2023 18:31:08:

He had left it at a bungalow on the opposite side of the lane no more than 30 yards from my address.

So you didn't recognise your neighbour's front door?

Thread: Acetylene bottles in the home workshop
06/09/2023 15:54:24

The simple response to somebody who says that something is illegal is to ask them to cite the relevant statute.

(Edited to undo "autocorrect" yet again!)

Edited By Chris Pearson 1 on 06/09/2023 15:55:10

Thread: Courier problems
06/09/2023 15:52:41

My sympathies. I have found DHL satisfactory until this week.

A consignment of wine arrived from Waitrose 4 days late. A dozen bottles were no longer in their cases and the labels are stained. No explanation has been given.

I have rejected the damaged goods today and await a response.

Thread: Building a car from scratch
06/09/2023 15:45:56

Good effort, but is a kit truly built from scratch?

Along similar lines, I would not call one of these cooking from scratch.

Edited By Chris Pearson 1 on 06/09/2023 15:47:27

Edited By Chris Pearson 1 on 06/09/2023 15:47:38

Thread: Acetylene bottles in the home workshop
05/09/2023 18:54:46

I have been a customer of BOC for decades. I have never had any difficulty obtaining gas or equipment. Undoubtedly, there will be restrictions in a workplace, but AFAIK, there are none at home. If there were restrictions in the domestic setting, I doubt that they would have made deliveries.

Thread: Ignition Electrodes
05/09/2023 18:51:25
Posted by John Doe 2 on 04/09/2023 23:33:49:

Only problem might be persuading them to sell one to you, since I bet you are not Gas-safe registered ! But worth a try.

Screwfix (Plumbfix/Electricfix) will not sell me boiler thermocouples. Happily, the plumbers' merchant across the road will do so. I now have a few in stock.

Thread: An unexpected weight
05/09/2023 18:47:45

I once had an "engineering" task which was to make a cardboard bridge of a certain width which was to be supported on tin cans (obviously, at each end) and to bear the weight of a third can with a minimum weight of 400 g. The aim was to maximise the length of the bridge.

Clearly, the nearer that I could get to 400 g for the load, the better.

Even ignoring the weight of the tin, I found no produce with a net weight of 400 g. 'Tis odd!

Edited By Chris Pearson 1 on 05/09/2023 18:48:09

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