Pete's Videos Who needs a volt stick?????????????????/

[davesparks]

So are you telling me that we don’t have to earth since it’s done at the substation. Where I live the power lines is medium voltage at 7200 volts then it goes to a step down transformer at 240 vac phase to phase after that it comes to me I have to bond it again. Dave I’m trying to understand

How many supplies are fed from each transformer?
Yes the star point is connected to earth at the substation, what happens after that depends on the type of supply. The resistance to earth of that connection is tightly regulated and will usually be well below 1 ohm.
The substation will usually have 11000V coming in and nominal 400/230 coming out.
For residential and small commercial supplies the substation will feed one, or usually multiple, distributing mains.
The distributing main is a large three phase cable running down the street usually underground or occasionally overhead.
Each single phase service is then jointed onto one of the phases of the distributing main, usually ever third house along a street will be connected to the same phase.

All connections of the neutral to earth are made by the power company. We are not allowed to connect neutral to earth in a consumers installation.
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Dave I watched Pete999 video where the power company gives y’all 2 wires 1 being 240vac and a 0v wire which it seemed the 0v wire y’all get and y’all have to earth it, is that correct

The 0V wire is the neutral, we don't connect this to earth.
The confusion is coming in because that is presumably describing a TNCS or PME supply.

 

[Megawatt]

How many supplies are fed from each transformer?
Yes the star point is connected to earth at the substation, what happens after that depends on the type of supply. The resistance to earth of that connection is tightly regulated and will usually be well below 1 ohm.
The substation will usually have 11000V coming in and nominal 400/230 coming out.
For residential and small commercial supplies the substation will feed one, or usually multiple, distributing mains.
The distributing main is a large three phase cable running down the street usually underground or occasionally overhead.
Each single phase service is then jointed onto one of the phases of the distributing main, usually ever third house along a street will be connected to the same phase.

All connections of the neutral to earth are made by the power company. We are not allowed to connect neutral to earth in a consumers installation.
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The 0V wire is the neutral, we don't connect this to earth.
The confusion is coming in because that is presumably describing a TNCS or PME supply.

The video talked about 3 different ways and one was TNCS-TNC-and something else with a T
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The video talked about 3 different ways and one was TNCS-TNC-and something else with a T

Dave you said that y’all was not allowed to connect neutral to earth in consumers installations but in the USA we are required to bond the neutral to earth and it’s been done this way as long as I’ve been doing electrical. It must be me not understanding what you are trying to tell me

 

[davesparks]

The video talked about 3 different ways and one was TNCS-TNC-and something else with a T
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Dave you said that y’all was not allowed to connect neutral to earth in consumers installations but in the USA we are required to bond the neutral to earth and it’s been done this way as long as I’ve been doing electrical. It must be me not understanding what you are trying to tell me

Yes there are three systems in common use, TNCS TNS and TT.
My replies so far have been based around a TNS to avoid confusing things further for the moment, maybe I should have focused on TNCS.

Yes in the USA (and many other countries) you are required to do that and in the UK we are required to not do that. (My personal opinion is that the USA approach to this is better)
I believe your system is a TNCS system (as far as I know this acronym is internationally used)

 

[Megawatt]

Yes there are three systems in common use, TNCS TNS and TT.
My replies so far have been based around a TNS to avoid confusing things further for the moment, maybe I should have focused on TNCS.

Yes in the USA (and many other countries) you are required to do that and in the UK we are required to not do that. (My personal opinion is that the USA approach to this is better)
I believe your system is a TNCS system (as far as I know this acronym is internationally used)

Dave I can’t thank you enough that’s been bothering me. I’m here to learn and was starting to feel like an ldiot. I’m not educated like y’all I had to quit school in the 9th grade to get a job to help my mom since I didn’t have a dad. I am not the best electrician out there but I’m not the worst either. I’m sorry if I made you mad. Please don’t have no hard feelings I don’t want to be kicked off this forum. It seems like I cause more trouble than anybody

 

[Grant1987]

Dave I can’t thank you enough that’s been bothering me. I’m here to learn and was starting to feel like an ldiot. I’m not educated like y’all I had to quit school in the 9th grade to get a job to help my mom since I didn’t have a dad. I am not the best electrician out there but I’m not the worst either. I’m sorry if I made you mad. Please don’t have no hard feelings I don’t want to be kicked off this forum. It seems like I cause more trouble than anybody

Megawatt don’t panic or get worried you are our overseas companion and interesting to hear how you yanks do electrics in comparison to us British your terminology is different to ours but all do the same job. Keep posting and asking questions I’m on here for same reason to learn and expand understanding no harm in that ?

 

[telectrix]

Dave I can’t thank you enough that’s been bothering me. I’m here to learn and was starting to feel like an ldiot. I’m not educated like y’all I had to quit school in the 9th grade to get a job to help my mom since I didn’t have a dad. I am not the best electrician out there but I’m not the worst either. I’m sorry if I made you mad. Please don’t have no hard feelings I don’t want to be kicked off this forum. It seems like I cause more trouble than anybody

putting it simply, there are 3 commonly used earthing systems over here.

1. TT. this is where earth rod/s are installed at each installation. this is the responsibility of the home owner to employ an electrician to install.

2. TN-S. here the incoming cable is lead sheathed and buried underground. a sweated or clamped connection is made at the customer's property, by the network operator (who is responsible for the earthing arrangement up to this point). electrician then connects the installation earth to this. the lead sheath of the cable is then the earth. not used on new installations as current supply cables are not metallic sheathed.

3. TNC-S. here the neutral is connected to the installation earth, again by the network operator. the supply cable has the N spiked into ground at intervals.

 

[Megawatt]

putting it simply, there are 3 commonly used earthing systems over here.

1. TT. this is where earth rod/s are installed at each installation. this is the responsibility of the home owner to employ an electrician to install.

2. TN-S. here the incoming cable is lead sheathed and buried underground. a sweated or clamped connection is made at the customer's property, by the network operator (who is responsible for the earthing arrangement up to this point). electrician then connects the installation earth to this. the lead sheath of the cable is then the earth. not used on new installations as current supply cables are not metallic sheathed.

3. TNC-S. here the neutral is connected to the installation earth, again by the network operator. the supply cable has the N spiked into ground at intervals.

Thanks for the info telectrix

 

[telectrix]

Thanks for the info telectrix

you can call me Tel. everone else does, except for the few who use the thieving scouser/watch your wheel caps. tag.

for yous who may not know. Scouseland is Liverpool. years ago some areas with high unemployment had a rep. for thieving. bit like your Detroit. there's an interesting bit here.:

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Posted April 1, 2013
"The Ferrari F1 team fired their entire pit crew yesterday."This announcement followed Ferrari's decision to take advantage of the British government's 'Work for your Dole' scheme and employ some Scouse youngsters.

The decision to hire them was brought about by a recent TV documentary on how unemployed youths from Toxteth were able to remove a set of wheels in less than 6 seconds without specialist equipment, whereas Ferrari's existing crew could only manage it in 8 seconds with millions of pounds worth of high tech gear.

It was thought to be an excellent, bold move by the Ferrari management team, as most races are won and lost in the pits, thus giving Ferrari a massive advantage over every other team.

The scouse lads were brilliant at their home practice sessions, however, Ferrari got more than they bargained for! At the crew's first real race practice session at Le Mans, not only was the scouse pit crew able to change all four wheels in under 6 seconds but, within 12 seconds, they had re-sprayed, re-badged and sold the car to the McLaren team for 8 cases of Stella, a bag of ganja and some photos of Lewis Hamilton's bird in the shower.

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[Megawatt]

you can call me Tel. everone else does, except for the few who use the thieving scouser/watch your wheel caps. tag.

Thanks tel for all your help

 

[ipf]

you can call me Tel. everone else does, except for the few who use the thieving scouser/watch your wheel caps. tag.

for yous who may not know. Scouseland is Liverpool. years ago some areas with high unemployment had a rep. for thieving. bit like your Detroit. there's an interesting bit here.:

• 
  
• 
• Members
• 364
• 7,499 posts
• LocationGrappenhall

• Report post

Posted April 1, 2013
"The Ferrari F1 team fired their entire pit crew yesterday."This announcement followed Ferrari's decision to take advantage of the British government's 'Work for your Dole' scheme and employ some Scouse youngsters.

The decision to hire them was brought about by a recent TV documentary on how unemployed youths from Toxteth were able to remove a set of wheels in less than 6 seconds without specialist equipment, whereas Ferrari's existing crew could only manage it in 8 seconds with millions of pounds worth of high tech gear.

It was thought to be an excellent, bold move by the Ferrari management team, as most races are won and lost in the pits, thus giving Ferrari a massive advantage over every other team.

The scouse lads were brilliant at their home practice sessions, however, Ferrari got more than they bargained for! At the crew's first real race practice session at Le Mans, not only was the scouse pit crew able to change all four wheels in under 6 seconds but, within 12 seconds, they had re-sprayed, re-badged and sold the car to the McLaren team for 8 cases of Stella, a bag of ganja and some photos of Lewis Hamilton's bird in the shower.

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Nice one tel....but maybe you should have quoted Indy 500......not many yanks involved with F1.