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Joined: Oct 2000
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Joined: Oct 2005
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That's one of the reasons why I go with rigid if protection is required by the AHJ for a GEC or bonding jumper... hate the jury-rigged stuff and rigid isn't all that terrible to bend. Though the jury-rigged methods are common and do pass, what about neat and workman like? Maybe it's time someone invents something better for EMT... assuming it doesn't already exist. All I've seen is what you see. Joe
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Joined: Jan 2005
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JJM, that is the connector I use on EMT- together with an EMT connector, of course!
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Joined: Aug 2005
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Actually I would consider the two photo examples to be "neat and workman" like. The Romex clamp is a nice solution. Now if the ground wire just exited the raw conduit I would consider that a bit sloppy but it would still probably pass.
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Joined: Oct 2004
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Look closely at the left of the second pic..it seems that the screw for the strap is not driven all the way in. Violation?
Stupid should be painful.
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Joined: Feb 2004
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Even though there is obviously substantial metal to metal contact with the bare copper ground inside the EMT, The EMT must still be bonded by a listed means... Are those 2 screw connectors listed for this purpose? I've used the clamp in JJM's post with an EMT connector before with no complaints from AHJ's
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Joined: May 2002
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Gus, the conductor must be bonded to both ends of the ferrous raceway per 250.64(E) Excerpt Ferrous metal enclosures that are not physically continuous from cabinets or equipment to the grounding electrode shall be made electrically continuous by bonding each end of the raceway or enclosure to the grounding electrode conductor. Bonding shall apply at each end and to all intervening ferrous raceways, boxes, and enclosures between the service equipment and the grounding electrode. Roger
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Joined: Jun 2006
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I think I would reject the use of loomex connectors at the ends of the raceway as bonding method, but a bonding bushing a short piece of #6 and a split bolt rated for #6 and 3/0 or a lug under the same bolt as the ground lug would make me happy.
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Joined: Nov 2002
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Is conduit considered a 'ferrous metal enclosure' ?
RSlater, RSmike
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Joined: May 2002
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RSmike, the second sentence covers the raceway. 250.92(A)(3) requires the same. 250.92 Services
(A) Bonding of Services The non–current-carrying metal parts of equipment indicated in 250.92(A)(1), (A)(2), and (A)(3) shall be effectively bonded together. (3) Any metallic raceway or armor enclosing a grounding electrode conductor as specified in 250.64(B). Bonding shall apply at each end and to all intervening raceways, boxes, and enclosures between the service equipment and the grounding electrode. This is also explained on pages 126 and 127 of the 9th edition of Soares. Roger [This message has been edited by Roger (edited 09-29-2006).]
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