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Service & Main Bonding Jumpers - IAEI Magazine
https://iaeimagazine.org/1998/98november/service-main-bonding-jumpers/
The main bonding jumper performs three major functions: 1. Connecting the grounded service conductor to the equipment grounding bus or conductor and the service enclosure. 2. Providing the low-impedance path for the return of ground-fault currents to the grounded service conductor.
Grounding Mistakes - IBEW - International Brotherhood of …
https://ibew139.com/grounding-mistakes/
Proper grounding and bonding prevent unwanted voltage on non-current-carrying metal objects, such as tool and appliance casings, raceways, and enclosures, as well as facilitate the correct operation of overcurrent devices. But beware of wiring everything to a ground rod and considering the job well done.
bonding raceways | Electrician Talk
https://www.electriciantalk.com/threads/bonding-raceways.22548/
raceway or armor (B) Method of Bonding at the Service. Bonding jumpers meeting the requirements of this article shall be used around impaired connections, such as reducing washers or oversized, concentric, or eccentric knockouts. Standard locknuts or bushings shall not be the only means for the bonding
Bonding jumpers in parallel, again. - Mike Holt's Forum
https://forums.mikeholt.com/threads/bonding-jumpers-in-parallel-again.2560449/
It appears to me that using Table 250.102 (C) (1) and installing a supply side bonding jumper in each raceway will result in more copper than installing a single supply side bonding jumper based on the table. If you are installing the SSBJ in the raceways, I am going to require one in each raceway because of the parallel conductor rules in 310.
Electrical Bonding and Grounding Explained
https://www.electricianinformationresource.com/electrical-bonding.html
In cable tray systems, jumpers are used across swivel joints or expansion joints to ensure that the continuity of the bonding system is maintained. When preparing bonding jumpers for expansion joints, leave an extra bend in the wire or use a flexible bonding jumper to keep a good connection even when the tray expands and contracts.
Bonding Conductors and Jumpers | UpCodes
https://up.codes/s/bonding-conductors-and-jumpers
where the ungrounded supply conductors are paralleled in two or more raceways or cables, and an individual supply-side bonding jumper is used for bonding these raceways or cables, the size of the supply-side bonding jumper for each raceway or cable shall be selected from table 250.102 (c) (1) based on the size of the ungrounded supply conductors …
How Big Should That Bonding Jumper Be? - Classes4Contractors
https://classes4contractors.com/how-big-should-that-bonding-jumper-be/
In section 250.64 (E) (3) of the 2014 N.E.C. the code states that the bonding jumper for a grounding electrode conductor raceway or cable armor shall be the same size as, or larger than, the enclosed grounding electrode conductor. This is a code violation and a bonding jumper sized 3/0 AWG or larger should have been used.
Grounding & Bonding — Why it is done And How to Install …
https://www.adamselectric.coop/wp-content/uploads/2015/02/Grounding-Bonding.pdf
This practice is called “grounding” and it is done to limit the voltage imposed by lightning, line surges, or unintentional contact with higher-voltage lines and to stabilize the voltage to earth during normal operationas documented by 250.4(A)(1) of the Code. Grounding is necessary to prevent fi res starting from a surface arc within the home.
Bonding Jumper - The Direct Learning Resource
https://thedirectlearningresource.com/bonding-jumper/
In section 250.64 (E) (3) of the 2014 N.E.C. the code states that the bonding jumper for a grounding electrode conductor raceway or cable armor shall be the same size as, or larger than, the enclosed grounding electrode conductor. This is a code violation and a bonding jumper sized 3/0 AWG or larger should have been used.
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