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no apparently thats pigeons your thinking of,all though they,re all a pain in the arse in my job!
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Discuss Tell us about your faults! in the Australia area at ElectriciansForums.net
OP
Bobster
Simple job today auto drain solenoid on a compensation vessel had stopped working after a recent fire on site. It was obvious the cables had been damaged and replaced and whoever had done it must have forgotten to replace the fuse.
Ok walk to the substation I'm pretty sure has the DB that the supply comes from. Check all the boards no sign of where its fed from.
After half an hour of tracing the cable back to the same sub I found where it was fed from. Out of a 63A Red Spot DB marked up on the front 'welding socket supplies'
Whoever put it in, to give them there due, had used a correctly sized fuse and marked inside the door.
Ok walk to the substation I'm pretty sure has the DB that the supply comes from. Check all the boards no sign of where its fed from.
After half an hour of tracing the cable back to the same sub I found where it was fed from. Out of a 63A Red Spot DB marked up on the front 'welding socket supplies'
Whoever put it in, to give them there due, had used a correctly sized fuse and marked inside the door.
OP
Bobster
Oh and I found this in the sub, our very own guard rat. Must have touched something it shouldn't and someone stuck him to the top of a piece of switch gear.
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Re: Tell us about your faults !
i wish i had thought of that for the old boards with obselete breakers. can i strap a match between 3 single phase ones and use as a 3 phase? obviously i would make sure they are all rated the same, couldnt have a 32, 16 and 6 as that would just be unprofessional!
i wish i had thought of that for the old boards with obselete breakers. can i strap a match between 3 single phase ones and use as a 3 phase? obviously i would make sure they are all rated the same, couldnt have a 32, 16 and 6 as that would just be unprofessional!
OP
Graeme Harrold
Got an 11K line running over the house, and our unfortunate daughter watched 1x unlucky and 1x stupid seagull blow them selves to bits as the bridged the wires..........
OP
Knobhead
I’ve had a 11KV board explode due to vermin getting in to the bus-bar chamber. Anything that gets rid of them is OK by be.
Got in sever trouble on a Norwegian north sea crossing. The crew didn’t like us squeezing calcium carbide into a ball of bread and throwing in to the air.
Not our fault the seagulls would swoop down and snatch it before it hit the water!
Do a bit of chemistry and you’ll work out the result.
Gets rid of vermin! QUICK!
Got in sever trouble on a Norwegian north sea crossing. The crew didn’t like us squeezing calcium carbide into a ball of bread and throwing in to the air.
Not our fault the seagulls would swoop down and snatch it before it hit the water!
Do a bit of chemistry and you’ll work out the result.
Gets rid of vermin! QUICK!
OP
ocso1979
Re: Tell us about your faults !
Good morning,
I have got silly trouble,I am foreign electrician and try apply for ECS card ( I have passed my test)but I cant really fin anyone who could write me a recommendation as it need in section 10 in application form.I have tried to reach the companies which I worked in past but some of the doesn't exist anymore.
Anyone some idea?
Thank you
Good morning,
I have got silly trouble,I am foreign electrician and try apply for ECS card ( I have passed my test)but I cant really fin anyone who could write me a recommendation as it need in section 10 in application form.I have tried to reach the companies which I worked in past but some of the doesn't exist anymore.
Anyone some idea?
Thank you
OP
Guest111
yes Tony my mate got a -------ing doing same on Blackpool prom with bicarb I think it was, got fed up of them trying to knick his chips,apparently they are a protected species,the gulls not the chips lol
OP
mspms
Re: Tell us about your faults !
This one has baffled me (doesn't take alot): I've been called to a house that has a problem with the upstairs light circuit's cpc being live, enough to detect a fault on my voltage tester but not enough to light a neon. The stair well lights, which are on the downstairs circuit are also cpc live. The rest of the downstairs light are good. There are also 4 sockets with the cpc live(non of these are adequate to shock nor trip the RCD). I have checked the wiring on all light switches and roses, Extractor fans and shaving points, I have checked all visible wiring in the loft and apart from some dubious use of some chock blox where the owner has changed light fittings(which I have checked and ensured they are now safe) I can not find the fault. I'm obviously missing something but don't know what. Any ideas? Also, the MET is showing no voltage.
This one has baffled me (doesn't take alot): I've been called to a house that has a problem with the upstairs light circuit's cpc being live, enough to detect a fault on my voltage tester but not enough to light a neon. The stair well lights, which are on the downstairs circuit are also cpc live. The rest of the downstairs light are good. There are also 4 sockets with the cpc live(non of these are adequate to shock nor trip the RCD). I have checked the wiring on all light switches and roses, Extractor fans and shaving points, I have checked all visible wiring in the loft and apart from some dubious use of some chock blox where the owner has changed light fittings(which I have checked and ensured they are now safe) I can not find the fault. I'm obviously missing something but don't know what. Any ideas? Also, the MET is showing no voltage.
- Reaction score
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Re: Tell us about your faults !
I ask this as it will help us identify the possible fault you have.
When you say you are getting a live voltage on the cpc's of circuits, What voltage are you getting and what are you checking it against as a form of reference and what instrument are you using.
I ask this as it will help us identify the possible fault you have.
OP
mspms
Re: Tell us about your faults !
I'm getting between 60 and 70 volts at each earth terminal. I'm using my mft to determin this. I'm also checking with my led voltage detector. I've carried out continuity with readings ranging from 0.45 ohms to 0.6 ohms.
I'm getting between 60 and 70 volts at each earth terminal. I'm using my mft to determin this. I'm also checking with my led voltage detector. I've carried out continuity with readings ranging from 0.45 ohms to 0.6 ohms.
- Reaction score
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Re: Tell us about your faults !
you need a known true earth supply to give you any true voltage on what you are testing, more so when faultfinding.
Tels idea is the best.
Your still not saying what you are testing between, obviously cpc and...........?
you need a known true earth supply to give you any true voltage on what you are testing, more so when faultfinding.
Tels idea is the best.
OP
Guest111
no apparently thats pigeons your thinking of,all though they,re all a pain in the arse in my job!
- Reaction score
- 4
On another note.
I had a coldcall to investigate an immersion timer not working, turns out loads of equipment in the house don't last very long and tv's, phone router etc. so checked immersion and neutral is live ! check brand new cu installed last year by a DI and tails are in the mainswitch the wrong way round so whole house reversed polarity.
I then wondered how he got test readings then realised he must have done them in his lounge rather than hers.
These Electrical Trainee have to be stopped before they kill someone. wish i could name and shame.
I had a coldcall to investigate an immersion timer not working, turns out loads of equipment in the house don't last very long and tv's, phone router etc. so checked immersion and neutral is live ! check brand new cu installed last year by a DI and tails are in the mainswitch the wrong way round so whole house reversed polarity.
I then wondered how he got test readings then realised he must have done them in his lounge rather than hers.
These Electrical Trainee have to be stopped before they kill someone. wish i could name and shame.
OP
mspms
Re: Tell us about your faults !
I was testing between live and earth.
I was testing between live and earth.
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- 5,940
Not really a fault but I was doing some wiring on a bunglaow and realised there was a supply to the garage, go and have a look and there is an RCD and 2way CU fed from 10mm T&E, OK no problem; hang on a minute there is no 10mm T&E from the supply, trace it back in the loft and 1m from the CU they have spurred off the socket ring (with a broken junction box)! For the price of a junction box they could have bought the extra metre of 10mm and used one of the four spare ways in the CU. Who knows why.
Oh and the lights were wired in black sheathed and insulated single core cable, again who knows why!
Oh and the lights were wired in black sheathed and insulated single core cable, again who knows why!
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- 4
Re: Tell us about your faults !
There lays your problem. If you have less than 240 Live to cpc then it can only be no earth potential on cpc so if you say the cpc is present it can only have become disconnected. The rcd will only trip if there is a fault to earth, you have no fault just no earth.
Lights down one at a time and check connections and see where it stops using telectix suggestion of long wandering lead from MET and check R2 till you find it. good luck.
There lays your problem. If you have less than 240 Live to cpc then it can only be no earth potential on cpc so if you say the cpc is present it can only have become disconnected. The rcd will only trip if there is a fault to earth, you have no fault just no earth.
Lights down one at a time and check connections and see where it stops using telectix suggestion of long wandering lead from MET and check R2 till you find it. good luck.
OP
mspms
Re: Tell us about your faults !
Many thanks needasparks. I will have to look at all light connections again. Just to confirm that i am looking for a disconnected earth somewhere in the circuit?
Many thanks needasparks. I will have to look at all light connections again. Just to confirm that i am looking for a disconnected earth somewhere in the circuit?
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