- Location
- Massachusetts
pre fabbing EGC pigtails
- Thread starter jeremysterling
- Start date
- Status
e57
Senior Member
- Location
- San Francisco, CA
Futhermore - that type of box is available with the pig-tail pre-installed the right way - if you check with your supply house I'm sure they can locate and stock them.
Back to the OPs question.
IMO no, what you have in your picture is a violation.
250.34(B)
Lcdrwalker
Senior Member
- Location
- Columbus, Ohio
I vote for a violation per 300.14. If the pig tail is bent around and through the back of the box it will be too short.
One could always use a longer piece of wire fr the EGC.
So far....I have yet to see one good reason to put the screw in the back of the box.
Karl H
Senior Member
- Location
- San Diego,CA
Ok I gotta say this. There are billions of metal boxes with bonding
screws installed inside the box. If you buy a box with a bonding screw
already installed by the manufacture it is inside the box. If you buy a box
that already has a bonding screw and pigtail installed by the manufacture
it's inside the box. I'm sure you've been doing this awhile and have
seen thousands of boxes with the bonding screw installed inside the box.
But, one day you think, "Wait a second here,This method of installing
the bonding screw inside the box,is all wrong, lookie-here it should be
installed on the outside of the box!" Then you post a picture of a box
with the bonding screw installed on the outside, on a NEC forum that
will be seen by hundreds of qualified ,highly trained electricians.
Like we are gonna say, "Sheer Genius!!! Why did'nt I think of that?"
screws installed inside the box. If you buy a box with a bonding screw
already installed by the manufacture it is inside the box. If you buy a box
that already has a bonding screw and pigtail installed by the manufacture
it's inside the box. I'm sure you've been doing this awhile and have
seen thousands of boxes with the bonding screw installed inside the box.
But, one day you think, "Wait a second here,This method of installing
the bonding screw inside the box,is all wrong, lookie-here it should be
installed on the outside of the box!" Then you post a picture of a box
with the bonding screw installed on the outside, on a NEC forum that
will be seen by hundreds of qualified ,highly trained electricians.
Like we are gonna say, "Sheer Genius!!! Why did'nt I think of that?"
Ok I gotta say this. There are billions of metal boxes with bonding
screws installed inside the box. If you buy a box with a bonding screw
already installed by the manufacture it is inside the box. If you buy a box
that already has a bonding screw and pigtail installed by the manufacture
it's inside the box. I'm sure you've been doing this awhile and have
seen thousands of boxes with the bonding screw installed inside the box.
But, one day you think, "Wait a second here,This method of installing
the bonding screw inside the box,is all wrong, lookie-here it should be
installed on the outside of the box!" Then you post a picture of a box
with the bonding screw installed on the outside, on a NEC forum that
will be seen by hundreds of qualified ,highly trained electricians.
Like we are gonna say, "Sheer Genius!!! Why did'nt I think of that?"
Well put!
I hear after reading this thread the head of Coke a Cola bottling company is trying to figure out how to ship the soda on the outside of the bottle, because they hired some fool that can't get the Coke in the bottle as fast as he can spray it on the outside of the bottle.
Volta
Senior Member
- Location
- Columbus, Ohio
A typo? Generators.
I still think that a box "shall be installed at", and they don't just mean next to it.
Sure.
You don't think there have been any good/code reasons posted yet?
- Location
- Massachusetts
Volta
Senior Member
- Location
- Columbus, Ohio
Yeah, but:
300.15. "A box shall be installed at each outlet and switch point for concealed knob-and-tube wiring."
I am pretty sure that the switch should be in the box.
I'm sure someone will find a code section that may back you up on this, Maybe......................
jeremysterling
Senior Member
- Location
- Austin, TX
250.134(B) applies to the green wire in the MC or EMT. I have not moved that conductor.
Instead, look at 250.134(A), it says go to 250.118.
250.118(1) Use copper conductor. Got it.
Now, go to
250.102(E) Installation. The equipment bonding jumper shall be permitted to be installed inside or outside of a raceway or enclosure.
As far as bend radius, the wrap around the green screw is tighter than the bend into the box, so I guess we're all using stake-ons from now on. Or clips.
Just to be sure, I'll check article 300:
300.3(B)(2)... Equipment bonding conductors shall be permitted to be installed on the outside of the raceways in accordance with 250.102(E)
The most obvious "good" reason is a longer bit or a helper with no more than 1 thumb per hand.
hardworkingstiff
Senior Member
- Location
- Wilmington, NC
Hummm. How much faster? At the most, 3 seconds? So if the helper was setting up 1,000 boxes (that's quite a few), it would take an additional 50 minutes to install the grounds. If the helper is costing you $25/hour (wages and overhead) then it will cost about $.02/box. Is that a big savings?
And get paid in monkeys.
I was hoping he'd edit that before it was noticed :smile:
LOL
- Location
- Massachusetts
OK then, go for it.
Obviously you feel this is a great idea and meets code. Personally I would be ashamed to say my coworkers could not handle putting the screw on the inside in an efficient manner. Generally we buy 6" long Phillips tips for the cordless so that the guys can reach in the box and install the grounding pigtail and tighten the box clamps (MC Jobs) as we prefab the plaster rings on the boxes.
- Status