How did I fix it??

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electricalperson said:
the way a CB operates in a short circuit condition is a little more complicated than the actual ampacity of the breaker. im sure some of the experts will explain how they actually work.
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the time is inversely proportional to the amplitude of the current, there are graphs that ilustrate this relationship, my point is that regardless of this it will for sure take more current for it to open.
 
dmanda24 said:
a short to ground creates just as spark since it takes only 20 amps for the breaker to open, a short to ground in the feeders takes 200 amps to open, haven't seen it but i'm sure it will be more than a spark.
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here is a small trick use rubber flat pieces (I have seen cardboard) on the back of the panel and anything metal so if the wire slips from your gloved hand it won't ground it self out.
Also you could of disconnected the individual branch circuits.

And yes most likely it is the main breaker or a bad connection in the meter pan but most likely water in the main service cable rotted..
 
g@friendly said:
Celtic 20a breaker could have amp reading. 200a main off has 0amps. 20 on is more dangerous than 200 off. yes power is on still but one may have a small load (night light)
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ive got to disagree with you on this one. the electricution hazard is the same whether its a 15a switch or a 1000a switch. where the difference is is the circuit potential. a 20a 120v circuit when shorted goes pop a 200a goes boom.
 
dmanda24 said:
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and changing a light switch on a live circuit is not the same as disconnecting live service wires, 20 amp breaker and 200 amp main disconnect protecting the wires, big diference.
celtic said:
I actually don't see a difference there....and neither will that 20A CB.

dmanda24 said:
a short to ground creates just as spark since it takes only 20 amps for the breaker to open, a short to ground in the feeders takes 200 amps to open, haven't seen it but i'm sure it will be more than a spark.
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...and yet, it takes only milliamps to drop a person dead.

The CB "sees" a person as nothing more a load - such as a lightbulb or toaster - not a short.

It's been said before and I'll repeat it here:
A circuit breaker never saved anyone's life.
 
mattsilkwood said:
ive got to disagree with you on this one. the electricution hazard is the same whether its a 15a switch or a 1000a switch. where the difference is is the circuit potential. a 20a 120v circuit when shorted goes pop a 200a goes boom.
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More like BOOM:cool:
 
Celtic, I guess you are only worried about dying and not worried about getting burned from a panel exploting in your face
 
dmanda24 said:
Celtic, I guess you are only worried about dying and not worried about getting burned from a panel exploting in your face
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I think you are missing my point....
dmanda24 said:
changing a light switch on a live circuit is not the same as disconnecting live service wires....big diference
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Please explain what the "big difference" there is.
 
if you don't see it you don't see it. You will have more to offer people you will get more jobs than I. I personaly put my safety first, and usually people that don't see the diff are the people that end up on those accident reports that mike sends on his newsletter
 
dmanda24 said:
if you don't see it you don't see it.
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I don't see it because you didn't answer the question.

What is the "big difference"?

All the other rhetoric is irrelevant...simply answer the question, please.
 
would you put on insulating gloves use insulated tools and wear a face mask to change a live switch, I don't think so, yet there are a lot of people that wear personal protection equipment to work with live feeders, so just by looking at how people protect themselves to do a specific task I would say there is a big difference
 
dmanda24 said:
...so just by looking at how people protect themselves to do a specific task I would say there is a big difference
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And that's the "big difference"? :-?
How much PPE someone can attach to themselves?
 
celtic said:
And that's the "big difference"? :-?
How much PPE someone can attach to themselves?
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does anyone have some ritalin for celtic, come on stay focused, they use the PPE because the risk is different, greater, the biger the risk the more protection
 
dmanda24 said:
does anyone have some ritalin for celtic, come on stay focused, they use the PPE because the risk is different, greater, the biger the risk the more protection
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So what you are saying is, the risk of working with live service wires is greater than with live branch circuit wires?
 
dmanda24 said:
does anyone have some ritalin for celtic, come on stay focused, they use the PPE because the risk is different, greater, the biger the risk the more protection
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Hold on a sec dmanda. You're getting played on words here. You've missed the point. Celtic points out that changing a switch live or a feeder live is the same thing. I think some have been waiting for you to bite. Bite on what???? The fact, as Celtic pointed out, it only takes milliamps to drop you dead, it doesn't take a feeder. Celtic has a very valid point.

Hot work should be avoided at any level.
 
One more thing, and it's bedtime for me. As far as your family is concerned, you best have proper rated footwear and gloves while changing ANYTHING live!!!!!!!!!!!!!!!!!!

You shouldn't be working live anyhow:mad: Celtic is looking out for your safety. Give him props:wink:
 
g@friendly said:
20a breaker could have amp reading. 200a main off has 0amps. 20 on is more dangerous than 200 off. yes power is on still but one may have a small load (night light)
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It was my point but I am staying out of it :rolleyes:
 
risk of being shocked - the same
electrocuted - same
burned or hurt by explosion - not the same

I have done work on communications equipment that work on -48 V DC at this voltage you can touch the bare coper with one hand and ground with the other and you won't feel a thing but just let one of the 750 mcm on a 2000 A rectifier bank touch the grounded rack and BOOM you won't feel a shock but you will have 3rd degree burns

hope you can see it
good night and be safe
 
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