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Safe-T-Cut Tripping Too Often

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1 hour ago, sometimewoodworker said:

First get everything ready to go in the house.

 

Second  turn everything off inside the house then Go out to your meter and disconnect the cables there.

 

Yes you will be dealing with live power cables if you disconnect the PEA ones or at least a live terminal block, however as you say you've worked on live wiring before you must know enough not to kill your self. If you do disconnect the PEA cables remember to insulate them. It is much safer (not completely safe but safer) to disconnect the house supply connections.

 

Reconnect the new isolation switch and house power to it, test everything, turn everything off. Reconnect your meter then turn everything back on in the house, if no breaker  trips and there is no bang you probably have not messed up.

 

I have listed each major step not because you need them listed but someone else may.

Have just had a look at my system. I don't want to disconnect the mains from the meter if I can help it, just in case they say I have been trying to do something like fiddle with my electric.

 

Have just had another look at my box see snap enclosed. This has been wired by the GREAT Electric company. The two Green wires going to top of box are the mains left being the L right being the N. Nice to see that they have used different colours.

 

All I will have to do is take out the L wire connect that with the new box same with the N. Or other way round. I can then hang it down out of the way. Whilst I disconnect the old thing and then replace it. Should be simple enough provided I don't touch any part of the box with live wire.

 

I was thinking to myself No wonder there are problems with electrics here when they Electric Comp: cant even get things correct.

 

 

IMGP0027.JPG

Edited by fredob43

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14 minutes ago, fredob43 said:

Have just had a look at my system. I don't want to disconnect the mains from the meter if I can help it, just in case they say I have been trying to do something like fiddle with my electric.

 

Have just had another look at my box see snap enclosed. This has been wired by the GREAT Electric company. The two Green wires going to top of box are the mains left being the L right being the N. Nice to see that they have used different colours.

 

All I will have to do is take out the L wire connect that with the new box same with the N. I can then hang it down out of the way. Whilst I disconnect the old thing and then replace it. Should be simple enough provided I don't touch any part of the box with live wire.

 

I was thinking to myself No wonder there are problems with electrics here when they Electric Comp: cant even get things correct.

 

 

IMGP0027.JPG       

 

Well you are fiddling with your electric aren't you?

The PEA isn't bothered with people disconnecting their power from the meter and they will easily see that your consumption hasn't dropped.

 

The wiring in and to the box is nothing to do with the PEA. They are responsible for the wiring to your meter only. Everything after that is your responsibility so it was the guy who wired up the house who decided to use green cable.

 

As a minimum you should wrap those with different colours of electrical tape, so you have a fighting chance of knowing wich one is live.

 

Edited by sometimewoodworker

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12 minutes ago, sometimewoodworker said:

 

The wiring in the box is nothing to do with the PEA. They are responsible for the wiring to your meter only. Everything after that is your responsibility so it was the guy who wired up the house who decided to use green cable.

 

As a minimum you should wrap those with different colours of electrical tape, so you have a fighting chance of knowing wich one is live.

 

When I had the electric upgraded I went into the E/Company and they sent their man round to do said upgrade. It was him that did it that way. They did get the earth wire correct that's green. As can been seen on right side of snap. He also fitted the new meter. So they do do other things even after the box. Just seems not very well.

 

As I have said I did do all the wiring in my house. All the colours are correct The only thing that is incorrect is what a stupid Thai did.

Edited by fredob43

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1 minute ago, fredob43 said:

When I had the electric upgraded I went into the E/Company and they sent their man round to do said upgrade. It was him that did it that way. They did get the earth wire correct that's green. He also fitted the new meter. So they do do other things even after the box. Just seems not very well.

That was not an official PEA job, but a person who happens to do a day job as a PEA employee doing private work.

 

Unless of course you have a bill from the PEA in which case you should call them and get them to change to the correct colour cable.

 

 

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2 minutes ago, sometimewoodworker said:

That was not an official PEA job, but a person who happens to do a day job as a PEA employee doing private work.

 

Unless of course you have a bill from the PEA in which case you should call them and get them to change to the correct colour cable.

 

 

I got a bill from PEA with total cost around 20th bht including the new Meter. Not bothered to much as it's to late to get it sorted now, they did it some 3 years ago.

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6 minutes ago, fredob43 said:

I got a bill from PEA with total cost around 20th bht including the new Meter. Not bothered to much as it's to late to get it sorted now, they did it some 3 years ago.

Are you sure there is not a main distribution panel somewhere else?  Those green wires look very small for an upgraded electric main feed.  But perhaps just my failing eyesight.    

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38 minutes ago, lopburi3 said:

Are you sure there is not a main distribution panel somewhere else?  Those green wires look very small for an upgraded electric main feed.  But perhaps just my failing eyesight.    

They as far as I know are 50+amp. So enough.

 

I have a double system from the meter. The one shown is for the front part of house, I have another set up for the back part. That powers the 5 fridges 3 large glass fronted ones. 2 chest freezers. 2 Kitchens one western and one Thai, plus the lighting and general power. They also have their own circuit breakers 5 boxes at the last count. I'm so over powered, just in case I ever get a problem with one set up I still have power at least somewhere. Even the lighting in all the rooms 8 are on a double system just in case one lot goes out one part will still work. I think it's called over doing it.

Edited by fredob43

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Might be something simple like you opening the fridge every 10 mins to get a beer and the fridge has a long cooling cycle and a short defrost cycle causing ice to build up in the fridge. You go away and the fridge changes it cycle. Defrosting ice can fall on the defrost heater connections or the extra water produced can short the wiring somewhere in or under the fridge. Easy fix give up the cold beer.


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31 minutes ago, fredob43 said:

They as far as I know are 50+amp. So enough.

 

With a 63A incoming breaker? Any indication what size they actually are? They should be marked.

 

On a 63A incomer I would expect to see at least 10mm2 (70A), preferably 16mm2 (90A).

 

EDIT Looking at that snap I see a worrying number of neutrals on the neutral bar. i.e. one other than the incomer and that's black (should be white or blue). The lives appear to be a brownish cream, should be black or brown.

 

EDIT 2 Do those green wires go all the way back to the meter or are they spliced somewhere?

 

What size meter do you have, it should be marked 15/45 or 30/100.

 

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21 minutes ago, Crossy said:

 

With a 63A incoming breaker? Any indication what size they actually are? They should be marked.

 

On a 63A incomer I would expect to see at least 10mm2, preferably 16mm2.

 

 

Just looked and there are no marks I think that's because they are large green wires they have used. This set up shown only powers the lounge and two of my 5 double bedrooms, Oh and two loos. They are about 10+ times thicker??? than 25amp power wires if that's any indication.

Edited by fredob43

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6 minutes ago, fredob43 said:

This set up shown only powers the lounge and two of my 5 double bedrooms, Oh and two loos.

 

So it's actually a sub-board off another main panel somewhere.

 

6 minutes ago, fredob43 said:

They are about 10+ times thicker??? than 25amp power wires if that's any indication.

 

Not really, the outside diameter difference between 2.5mm2 (20A power) and 16mm2 (90A incomer) is only about 2X (4mm and 8mm). If you really want to be sure you need to measure the diameter of the copper with a vernier/micrometer and calculate the cross-sectional area. 

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4 minutes ago, fredob43 said:

They are about 10+ times thicker??? than 25amp power wires if that's any indication.

I must say they sure do not appear that way - they look to be single strand of about 2mm (smaller than most of the breaker runs).  It looks to be an undersized feed from another panel rather than a feed from electric meter.  

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I may have been a bit harsh with the beer comment but it would be worth checking the defrost heater is working on the evaporator coils.


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27 minutes ago, lopburi3 said:

I must say they sure do not appear that way - they look to be single strand of about 2mm (smaller than most of the breaker runs).  It looks to be an undersized feed from another panel rather than a feed from electric meter.  

As I have said I have a double set up, when the power wire from the meter come into the house they split into two parts the first one goes to this box and the second goes to 5 boxes with their own circuit breakers. That powers the rest of the house. I cant show the split but can show snap of the upgraded Meter. If it helps.

 

 

IMGP0001.JPG

Edited by fredob43

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34 minutes ago, Crossy said:

 

So it's actually a sub-board off another main panel somewhere.

 

 

Not really, the outside diameter difference between 2.5mm2 (20A power) and 16mm2 (90A incomer) is only about 2X (4mm and 8mm). If you really want to be sure you need to measure the diameter of the copper with a vernier/micrometer and calculate the cross-sectional area. 

I did reply to your post but it got lost. Yes it's a sub board it powers the front part of house, lounge two bedrooms and two loos. The rest is powered by the other 5 boxes with their own circuit breakers.

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