What is an equipment bonding jumper?
Equipment bonding jumper is the connection between two or more portions of the equipment grounding conductor.
What is bonding jumper conductor?
From Wikipedia, the free encyclopedia. A bonding jumper is a reliable conductor to ensure the required electrical conductivity between metal raceways required to be electrically connected.
What does the main bonding jumper do?
For our typical AC electrical system, the purpose of the “Main Bonding Jumper” is to connect the equipment grounding conductors (E.G.C.) contained in each branch-circuit and the metal (conductive) service-disconnect enclosure to the Neutral Conductor of the electrical service.
What is bonding of equipment?
Electrical bonding is connecting multiple conductive components that are not intended to carry a current. This creates a conductive path between equipment, housing, panels, metal parts and other structures.
Where does the main bonding jumper go?
There are many different bonding jumpers installed in an electrical system, but there is only one main bonding jumper, and it is located at the electrical service. It is defined in Article 100 as the connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Why is bonding required?
Bonding is used to reduce the risk of electric shocks to anyone who may touch two separate metal parts when there is a fault somewhere in the supply of electrical installation. By connecting bonding conductors between particular parts, it reduces the voltage there might have been.
How do you install a bonding jumper?
A bonding jumper is required to be installed with adjustable splices and expansion splices. Install Bonding Jumpers by bolting each lug to a 5/16 square hole located at each end of the channel. Do not use splice plate bolt or pin locations to connect the jumper to the splice plate. Only connect to the channel.
Where an equipment bonding jumper is installed?
The equipment bonding jumper shall be permitted to be installed inside or outside of a raceway or enclosure. Where installed on the outside, the length of the equipment bonding jumper shall not exceed six (6) feet and shall be routed with the raceway or enclosure.
Where do you install the main bonding jumper?
A properly sized equipment bonding jumper is installed from the terminal bar for the grounded service conductor or from the equipment grounding terminal bar to each conduit individually.
Why is electrical equipment bonded?
The purpose of bonding is as follows: It ensures that normally non current-carrying conductive objects that are bonded are at the same electrical potential. When bonded to the neutral bar at a breaker box, it facilitates the operation of the branch-circuit over-current device.
How do you size bonding jumpers?
Supply-side bonding jumpers:
- Size these per Table 250.66, based on the largest ungrounded conductor within the raceway.
- If the ungrounded supply conductors are larger than 1,100kcmil copper or 1,750kcmil aluminum, size the bonding jumper at least 12.5% of the area of the largest set of ungrounded supply conductors.
How big should that bonding jumper be?
The minimum size of the main bonding jumper would be 0.125 x 2,000 kcmil, or at least 250kcmil. Occasionally, an installation will involve the use of a material for the main bonding jumper that differs from the material of the phase conductors.
What does bonding jumper mean?
Here are all the possible meanings and translations of the word bonding jumper. An electrical connection that bonds the electrical supply to ground via the water piping system. A bonding jumper is a reliable conductor to ensure the required electrical conductivity between metal raceways required to be electrically connected.
What is system bonding jumper?
The system bonding jumper (SBJ) is the connection between the grounded circuit conductor and the supply side bonding jumper (SSBJ), or the equipment grounding conductor or both at the separately derived system (the transformer) The Following User Says Thank You to Dennis Alwon For This Useful Post:
What is supply side bonding jumper?
A supply side bonding jumper is a conductor on the supply side or within a service or separately derived system to ensure the electrical conductivity between metal parts required to be electrically connected (Fig. 1).