Line clearance question.

[nba123]

your right and even on distribution lines you dealing with about 60 amps min.

Its 60 cycles a second amps have nothing to do with time Just load.

 

[nba123]

Lol yup and 1/10 of one amp in 12vdc can kill so all are dangerous. I always say it is not amps or volts that determine a fatal electrocution it is the ohms or lack of that do.

It one tenth of a milli amp and its ac not dc. dc is what your car bat puts out.

 

[ropensaddle]

You R wrong service drops can be a minimum of 240v to a residence, and up to 480v. Do not give people false info also It is not the same as in ur house where u have a 100 or 200a breaker, There is to much to tell in just a few words here, the main thing is to avoid contact and asume the highest voltage. I am a Journeyman lineman for a large power comp and do service drops for trimmers all the time. I also will install cover up if they request it, and in many cases have put cover up on a service with intent to leave it so wire could rub on the tree because homeowner wouldnt here of there tree being trimed, and as a utility ur trimming rights stop at the primary, the cust can let the secondary grow up as much as they want. If it rubs the wire in two we just have to fix. I have cleared built and maintianed power lines from 240v to 500kv, the clearence part was only when its in my way. In my career as a troubleman I have refused countless primary lines, helped many trimmers who had ropes smoking on pri and put up 100s of service lines on trim jobs that didnt go as planed. At the power comp I work for it is free to have us come out and that is cheap insurance. In the town I live in all the trimmers have my number and I help them any way I can. James

What about 880? Anyway he thought I was a fool for saying ohms is usually what makes a contact fatal or not I tried to explain if you make contact with a pruner with infinite resistance you will not feel a tingle but bare handed its all over. Some lines like I cut row on 500kv, if you get too close they will jump out and get you but resistance is still a factor. Of course the primary single phase can too just not as far away. Resistance and staying out of the path of least resistance kept me alive in 27 years of trimming trees on fire!

 

[nba123]

Underground is not code it has to meet code and is at a cost to customer in most cases. Also bare in mind, if your objective for underground is to save trees you will likely be surprised in two years when the trees die you were attempting to save!

I agree with u on the tree root part about 8 years ago, but since then in my area and the other 10 states iv worked in 98 perccent of all urd utilitys are directional board or water jeted in and r in most cases much deeper than the roots. Also there is a big push right now by the public service comision to put it all underground for more reliable service to the cust, lineman do not like it because it takes longer trouble shot. James

 

[ropensaddle]

It one tenth of a milli amp and its ac not dc. dc is what your car bat puts out.

It is in my safety materials 1/10 in 12vdc not saying yours is not right too but I tested on this rule. No matter it is very little voltage ohms is what kills you imho.

 

[nba123]

It is in my safety materials 1/10 in 12vdc not saying yours is not right too but I tested on this rule. No matter it is very little voltage ohms is what kills you imho.

I would be a jack ass to argue with your books. It is very little to kill and 120v claims more lives every year than all others combined. Do u clear for ark power and light or entergy.

 

[ropensaddle]

I agree with u on the tree root part about 8 years ago, but since then in my area and the other 10 states iv worked in 98 perccent of all urd utilitys are directional board or water jeted in and r in most cases much deeper than the roots. Also there is a big push right now by the public service comision to put it all underground for more reliable service to the cust, lineman do not like it because it takes longer trouble shot. James

Fault finder work on underground?

 

[millbilly]

You R wrong service drops can be a minimum of 240v to a residence, and up to 480v. Do not give people false info also It is not the same as in ur house where u have a 100 or 200a breaker, There is to much to tell in just a few words here, the main thing is to avoid contact and asume the highest voltage. I am a Journeyman lineman for a large power comp and do service drops for trimmers all the time. I also will install cover up if they request it, and in many cases have put cover up on a service with intent to leave it so wire could rub on the tree because homeowner wouldnt here of there tree being trimed, and as a utility ur trimming rights stop at the primary, the cust can let the secondary grow up as much as they want. If it rubs the wire in two we just have to fix. I have cleared built and maintianed power lines from 240v to 500kv, the clearence part was only when its in my way. In my career as a troubleman I have refused countless primary lines, helped many trimmers who had ropes smoking on pri and put up 100s of service lines on trim jobs that didnt go as planed. At the power comp I work for it is free to have us come out and that is cheap insurance. In the town I live in all the trimmers have my number and I help them any way I can. James

ok rocket man explain to me how i can have 110 volts in my house without a step down trans former.

 

[ropensaddle]

I would be a jack ass to argue with your books. It is very little to kill and 120v claims more lives every year than all others combined. Do u clear for ark power and light or entergy.

I have cleared for Indiana,Mi,Texas,Kansas,and lastly Arkansas both Ap&l now entergy and First electric coop!

 

[ropensaddle]

ok rocket man explain to me how i can have 110 volts in my house without a step down trans former.

Because your breaker box has two bars for each hot and then a separate neutral ground and safety ground. One leg is 120!
Under your primitive understanding how would you get 220 for your electric oven?

 

[nba123]

I got in my lineman books It take 1 tenth of 1 amp for 1 sec in any voltage to kill. The 1 second part is because that is how long it takes for musle contraction. Ohms is resistance and your bodys is about the same as water. I cant posibly rember all of it to many books to many years. Rope thanks for posting that u got me off my but and into the books. James

 

[nba123]

Fault finder work on underground?

Yes we have a new one that will tell you how many feet to fault, and even test through transformers. Very neet the down side is buy the time u get it and set up more times than not u would have had the overhead repaird. It sends a dc pusle out I dont know all the ins and outs its over my head.

 

[millbilly]

Because your breaker box has two bars for each hot and then a separate neutral ground and safety ground. One leg is 120!
Under your primitive understanding how would you get 220 for your electric oven?

like I stated from the beging your service drop is 110. now if you want to show me how much you really know what would the voltage be at the meter if your service loop was 385 feet and you were using 6 gauge copper wire. assuming the voltage was 115volts at the tap.

 

[ropensaddle]

I got in my lineman books It take 1 tenth of 1 volt for 1 sec in any voltage to kill. The 1 second part is because that is how long it takes for musle contraction. Ohms is resistance and your bodys is about the same as water. I cant posibly rember all of it to many books to many years. Rope thanks for posting that u got me off my but and into the books. James

I learned the 1/10 of one amp in 12vdc in asplundh foreman manual I believe we're both right. I believe the point they are making is to not be complacent the resistance ohms is what always determined if I got shocked. If I made no contact with my body or other known low resistance conductor, I received no shock. Simple in theory no so simple with 20 foot burning overhang but even that can be overcome by staying out of the path of least resistance. I always tried to be above the limbs that were burning so if they became energized the flow will always take the swiftest path to ground and I was out of that path!

 

[nba123]

ok rocket man explain to me how i can have 110 volts in my house without a step down trans former.

Thanks for the rocketman thing but rocket men can spell and type better than me. To anser ur question most services r 3 wires but some r 4 on the three wire ones there will be two phases I would like to say the coated ones but hate to give a blanket statement, anyways 1 of those to nuetral is 120v the two phases together will be 240v and all jokeing aside remember this if you ever cut the neutral or uncoated one in half do not grab both ends at the same time or it will be game over. The neutral is no more than a return path and when split u should treat it with the upmost respect I have seen several neutrals cut with hydrolic sticksaws and most times people cant get both ends back together due to tension. The neutral carrys max line voltage so if its 7200 phase to ground than thats what the neutral has on it u just wont no till u break the path in half. There r houses with step downs usually from 480 to 240.

 

[ropensaddle]

like I stated from the beging your service drop is 110. now if you want to show me how much you really know what would the voltage be at the meter if your service loop was 385 feet and you were using 6 gauge copper wire. assuming the voltage was 115volts at the tap.

No the service is 240 that is like saying a three phase is only 4110v one leg may be but combined voltage or maximum is what the service is rated. Well actually it is normally rated in amps here. I am not a electrician by any means but I am not a fool either and you thinking me for one is your mistake. Resistance is the killer just ask a bird.

 

[nba123]

I learned the 1/10 of one amp in 12vdc in asplundh foreman manual I believe we're both right. I believe the point they are making is to not be complacent the resistance ohms is what always determined if I got shocked. If I made no contact with my body or other known low resistance conductor, I received no shock. Simple in theory no so simple with 20 foot burning overhang but even that can be overcome by staying out of the path of least resistance. I always tried to be above the limbs that were burning so if they became energized the flow will always take the swiftest path to ground and I was out of that path!

Yes u were right I should have said that. 1 tenth at any volage ac or dc. If u were clearing out of a bucket u can almost cheat death. The one sitting in my drive is tested at 100kv every 6 months so esentialy you are like a bird on a wire. I glove pri out of mine every day but were I have got shocked is in the rain stormes when the trees r wet and then it will track.

 

[ropensaddle]

Yes u were right I should have said that. 1 tenth at any volage ac or dc. If u were clearing out of a bucket u can almost cheat death. The one sitting in my drive is tested at 100kv every 6 months so esentialy you are like a bird on a wire. I glove pri out of mine every day but were I have got shocked is in the rain stormes when the trees r wet and then it will track.

Yeah our buckets were hypot tested too, I did testing for a while. In clearing line you can be shocked if a limb gets across phases or to neutral . We had tested gloves and protectors too but only came out for emergency or where the chance of exposure was great like storm damage. I watched many linemen glove lines and a few of the old timers did so off poles but some of them did not live to tell about it. I could not imagine gloving off a pole out of a bucket yeah I could do it. I had a serviceman that gave me many hours overtime and like to hand me the hot stick to re-fuse on tall poles in the wind I seemed to be good at it!

 

[nba123]

like I stated from the beging your service drop is 110. now if you want to show me how much you really know what would the voltage be at the meter if your service loop was 385 feet and you were using 6 gauge copper wire. assuming the voltage was 115volts at the tap.

I have never hooked up a 385ft service loop its just to far to push sec, guage wire is what u use for welding leads and car bats. Assuming the voltage was 115 we would allready be on the very bottom of the curve as the standerd is 123 at the trans. Now for ur ques all you would see is very little line loss because u have given me no load we talking 100 a load or 200 a if there is no load there no problem to figure out and 385 ft would take like 500 mcm copper and 480v to be effective at that distance. So smoth ur feathers down and know this when we look at services we refere to them as a 240 serv or a 480 serv its allways phase to phase voltage and how u get phase to phase voltage is phase to ground times 1.73. We can pick this up tomarow. James

 

[nba123]

Yeah our buckets were hypot tested too, I did testing for a while. In clearing line you can be shocked if a limb gets across phases or to neutral . We had tested gloves and protectors too but only came out for emergency or where the chance of exposure was great like storm damage. I watched many linemen glove lines and a few of the old timers did so off poles but some of them did not live to tell about it. I could not imagine gloving off a pole out of a bucket yeah I could do it. I had a serviceman that gave me many hours overtime and like to hand me the hot stick to re-fuse on tall poles in the wind I seemed to be good at it!

We still glove 4kv of pole under my contract, but do so as little as poss. It was good talking with you.