This is what I follow as I have been thought this way by my teacher.
However, I voted "NO" in the pole and it only applies to smaller boxes with #12&14 conductors, however, if I have a 6x6 or larger splice box I always use a ground bar.
Do you splice all your EGCs together?
- Thread starter iwire
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This is what I follow as I have been thought this way by my teacher.
However, I voted "NO" in the pole and it only applies to smaller boxes with #12&14 conductors, however, if I have a 6x6 or larger splice box I always use a ground bar.
mtfallsmikey
Senior Member
That's the way I was taught as well.
DBoone
Senior Member
- Location
- Mississippi
- Occupation
- General Contractor
If you make two bundles and jumper between them, the jumper just has to be sized to the largest OCPD correct?
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
Depends entirely on what is in each of the two bundles.
For example: one bundle includes home run EGC for 50A circuit passing through the box as well as the continuation EGC. Other bundle includes 15A circuit EGC and pigtails to a bunch of devices on the 15A circuit in the box. No need to jumper at all, but jumper sized to 15A EGC would be fine.
SceneryDriver
Senior Member
- Location
- NJ
- Occupation
- Electrical and Automation Designer
I use lots of ground bars. They make landing EGC's in a pull box easy. Cheap and easy to use too.
SceneryDriver
I like to use ground bars in 6x6 or larger. But this has me thinking: would it be acceptable to install a ground bar in a 2-gang or even a 1-gang box? (I can't really think of an application where I would want a ground bar in a 1-gang box, but I'm curious if it would violate listing or code.)
DBoone
Senior Member
- Location
- Mississippi
- Occupation
- General Contractor
Our poll isn't unanimous so obviously 250.148 is debatable as to interpretation. So, for all who think it is a requirement to splice all, and who believe if you do not splice all you are violating code, will some of you please agree with me and admit that by keeping them separate it does not pose anymore of a hazard than the many other circuits with only one return path. It does not cause great risk to human life.
Anybody?
Anybody?
qcroanoke
Sometimes I don't know if I'm the boxer or the bag
- Location
- Roanoke, VA.
- Occupation
- Sorta retired........
nevermind
Last edited:
It's not debatable.
Read it again.
any equipment grounding conductor associated with "those" "circuits".
Not "that" "circuit".
Again, if you grouped grounds, as your stating, how then would you count them in conductor fill. 1 ground per group?
My suggestion. Move on. Put all your grounds together and stop trying to reinvent the wheel.
fmtjfw
Senior Member
- Location
- Fairmont, WV, USA
All the grounding conductors in a box count as 1(ONE) conductor of the largest sized EGC. Be it 1 or be it 100.
LOL...
I know, I know..
Just making reference to if you have several ground bundles that shouldn't be the case. It should be one per bundle.
To mention too as I was thinking.
You do a house rough, all the boxes are cut in, no splices have to be made to pass the rough inspection, however, what does need to be done?
jaylectricity
Senior Member
- Location
- Massachusetts
- Occupation
- licensed journeyman electrician
Scenario: One circuit suffers a ground fault. One group of EGCs is close enough to another group to cause an arc-flash. Now other conductors in the box could be damaged by the heat. All behind a device or cover plate never to be known that there is damage.
I don't see any safety issue by keeping them separate. If there is ground fault I am sure the breaker will respond and I highly doubted that there is any Arc Flash hazard as mentioned by previous poster.
DBoone
Senior Member
- Location
- Mississippi
- Occupation
- General Contractor
Jay, Edward, thanks for the feedback. Its been a good poll/topic and has been interesting to read responses on both sides of the spectrum. I always like picking the brains on this forum to see how my views and opinions line up with the professionals with tons more experience and time in the field than I have.
Im gonna let this one rest now but I'll still be prowling around. Thanks for not roughing me up too bad.
Im gonna let this one rest now but I'll still be prowling around. Thanks for not roughing me up too bad.
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
I never had considered this as debatable.
mint402
Member
- Location
- Portland, OR
yes
yes
At least one inspector in Portland, OR interprets it as ALL must be connected together. I now agree.
yes
At least one inspector in Portland, OR interprets it as ALL must be connected together. I now agree.
mjf
Senior Member
EI wants to see all grounds spliced at rough around here.
fmtjfw
Senior Member
- Location
- Fairmont, WV, USA
NO
NO
see http://en.wikipedia.org/wiki/AC_power_plugs_and_sockets
then ctrl-F and search for japan several times.
NO
see http://en.wikipedia.org/wiki/AC_power_plugs_and_sockets
then ctrl-F and search for japan several times.
DrSparks
The Everlasting Know-it-all!
- Location
- Madison, WI, USA
- Occupation
- Master Electrician and General Contractor
Let's get a couple things straight here. For one, the abbreviation I assume we're talking about is Grounding Electrode Conductor, which is GEC, not EGC. And if that's what we're talking about, we're a little off track here talking about outlet boxes. I think your confusing GEC with equipment ground (EG). Big difference, both both provide (ideally);a low resistance path to ground. And they should be joined at each termination for sake of maintaining equipotential among non-current-carrying metal parts.
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