Rewire
Senior Member
- Location
- Lake of the Ozarks
Here is a dock disconnect fed from a breaker at the condo
This is the J box were they spliced the neutral to feed the dock and then to disconnect the black spot is from the a poorly taped lug
check this Pic
- Thread starter Rewire
- Start date
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Here is a dock disconnect fed from a breaker at the condo
This is the J box were they spliced the neutral to feed the dock and then to disconnect the black spot is from the a poorly taped lug
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
"250.6(C) Temporary Currents Not Classified as Ojectionable Currents.
Temporary currents resulting from accidental conditions, such as ground faults, shall not be classified as objectionable current for the purposes specified in 250.6(A) and (B)."
Temporary currents resulting from accidental conditions, such as ground faults, shall not be classified as objectionable current for the purposes specified in 250.6(A) and (B)."
ibew441dc
Senior Member
True, But.......
250.6 Objectionable Current. (A) Arrangement to Prevent Objectionable Current.
The grounding of electrical systems, circuit conductors, surge arresters, surge-protective devices, and conductive normally non–current-carrying metal parts of equipment shall be installed and arranged in a manner that will prevent objectionable current.
Common Pierre I know you didn't over look the basics did you:roll:
250 Definition-Ground Fault. An unintentional, electrically conducting connection between an ungrounded conductor of an electrical circuit and the normally non–current-carrying conductors, metallic enclosures, metallic raceways, metallic equipment, or earth.
since when was Grounded ....Ungrounded?
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Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
Daniel
I do not understand your point.
I do not understand your point.
ibew441dc
Senior Member
Okay....maybe I misunderstood yours. You made this comment regarding my original comment. What did you mean?
A neutral connection to an equipment grounding conductor is not a Ground Fault, it is Objectional Current.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
From the arc on the cover as pictured, I saw a ground fault condition.
Neutral-ground connections are considered as Objectional Current, I agree.
ibew441dc
Senior Member
In Rewire's original post below the bottom picture, a referral was made to the spliced neutral......ect.
My interpretation of Rewire's statement was , that it was the neutral that was spliced and touching the enclosure. Thus being objectionable current, not a ground fault.
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I saw that too..... only one pipe has a noodle.
ibew441dc
Senior Member
"Short Answer"
If this is a picture of service equipment.........a grounded conductor is required to be brought in with the supply.
On the Load side it appears an equipment grounding conductor of the wire type is run with the ungrounded conductors to the load.(in this pic, hard to tell but looks like EGC is too small)
A neutral is not necessary if the load does not require one......Maybe its feeding a 240 volt 2 wire something?
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Rewire
Senior Member
- Location
- Lake of the Ozarks
They brought a four wire system from the building service panel in the junction box they spliced the neutral and ran it out to the dock they then took the neutral uo to the disconnect with the line side. The neutral was poorly taped and arced on the cover
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
You are sure the neutral was arcing to the cover?
ibew441dc
Senior Member
Pierre,
Rewire said the neutral was poorly taped and arced against the cover.
As you well know.......current does not take the path of least resistance, it takes all available paths.
Although unintentional, This conductor was making a poor connection, with probably some significant impedance, causing a good enough voltage drop to start heating up.......resulting in Objectionable Current flow.
What happend to the days when you could jam all those splices in there and use a furring strip to keep them away from the cover.
this exact thing happened with a 480v disco tapped on the line side, 5ft from service panel which was maybe 30ft from the transformer. blew up in my face, luckily the blast went out the side of the can and not the front.
electricalperson
Senior Member
- Location
- massachusetts
we done a job on a dock that had 480 volt welding receptacles protected by fuses in a fused disco right on the dock. somehow the fuse blew and one of the workers replaced a fuse and didnt stick it in all the way or something but it ended up touching the cover and blew a hole in it
Here is a dock disconnect fed from a breaker at the condo
This is the J box were they spliced the neutral to feed the dock and then to disconnect the black spot is from the a poorly taped lug
that dock looks a lot like the one at my moms condo. is that near the new bridge?
JohnJ0906
Senior Member
- Location
- Baltimore, MD
This is the J box were they spliced the neutral to feed the dock and then to disconnect the black spot is from the a poorly taped lug
Looks like a nice layer of dirt/sand in the bottom of that Jbox.
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