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What size copper bonding jumper is required by NEC - OR 2011 to bond the gas pipe to a 120v 20A circuit?
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∙ 12y ago
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Can the ground wire pass through the same conduit as feed wires from panel to meter?
If you are asking simply a technical question the answer is no, because ground wires do not exist from the panel to the meter. My advice to you is this: If you have an inspector telling you to do something a certain way, do it his way unless in your professional opinion you believe to do so would be unsafe. What is properly called a ground wire, or what the NEC calls a groundING conductor (as opposed to the groundED conductor) does not run from the meter to the panel. From the meter to the panel you will have the groundED conductor, which is the neutral, and possibly a bonding jumper. The bonding jumper is probably what you are referring to as the ground wire. The code requires that all components of a service be bonded together. The components for a common home are just the meter and panel, but may also include a separate disconnect, junction box, or CT box. Typically the bonding jumper is run in the same raceways as the service conductors, but since the NEC prohibits any other conductors in a raceway that carries service conductors some jurisdictions do not allow the jumper to be inside the raceway or conduit. Technically the bonding jumper is not a conductor even if it is a wire. Grounding and Bonding are 2 of the largest sections of the NEC and the most misunderstood. To the untrained eye they look alike as they both often use green or bare wires to accomplish their tasks. Understanding the difference, the proper difference, between grounding and bonding is a step in the right direction but many professional electricians use the terms improperly and cannot make a reasonable explanation of what is the purpose for each. I invite answers from other electricians as I'm sure my explanation is much more complicated than the questioner wanted or needed.
Who invented jumper cables?
Leon Jumper in 1863
A jumper wire should be used to bridge the electrical ground across?
A jumper wire should use to bridge electrical ground across?
How do you convert an older electric range to a 4 wire plug when there is no bonding strap on the range It now has a 3 wire cord I need to convert it to a 4 wire cord.?
The difference between a 4-wire and a 3-wire is a separate ground and neutral. That being said, all you have to do is connect the ground wire to chassis ground, and the neutral wire directly to the neutral connection. The phase wires are made up the same as the old cord. You must also remove the bonding jumper, but if there isn't one... IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS. If you do this work yourself, always turn off the power at the breaker box/fuse panel BEFORE you attempt to do any work AND always use an electrician's test meter having metal-tipped probes (not a simple proximity voltage indicator) to insure the circuit is, in fact, de-energized.
How do you wire a circuit so that the switch only controls the second receptacle and the first receptacle is always energized?
You will need a receptacle that you can wire each outlet separately (not jumpered). You would then wire the switch in series on the line conductor with the outlet you want switchable. Wire the other outlet directly to the power source. You can jumper the neutral from one outlet to the other.
What size copper main bonding jumper is required based on the service entrance conductors being rated at 250 kcmil thwn-thnn copper?
Based on NEC 250.66- #2 copper or 1/0 aluminum.
What is the definition of the connection between the grounded circuit and the equipment grounding conductor at the service?
2008 NEC - Article 100 Definitions - Bonding Jumper, Main Main Bonding Jumper is the answer.
What size bonding jumper for 200 amp service panel?
There is no bonding jumper wire required on a 200 amp service panel. The meter stack is metallic and is continuous from the mast head down to the distribution panel. If you are talking about the ground wire for a 200 amp panel it requires a #6 bare copper conductor that connects the grounding rod or plate to the neutral point in the distribution panel. Assuming the answer above is an example of a service, where the meter is stacked above the first service disconnect and is mated to this panel by a threaded hub. However if your meter were to be mounted beside your first service disconnect and a metal nipple with lock nuts were used for raceway. You would be required to have a bonding jumper on that nipple sized according to NEC Table 250.122. So for 200 amp that would be #6 copper or #4 aluminum.
How do you toggle the BIOS reset jumper?
The BIOS rest jumper is toggled by placing the jumper of the specific jumper pins. This causes the connection to close the circuit and trip the internal reset.
How do you make a circuit bigger?
It depends on what circuit you have in mind and what tools you have. If you wish to expand an existing DC or low frequency circuit, you can add jumper wires and route them to an expansion board where the rest of your circuit may be built.
What is the purpose of a jumper?
A jumper is used to complete a circuit on a motherboard or other device and thus signal a certain mode of operation, such as "the BIOS should be in recovery mode" or "this hard drive is the Master device."
Why do alligator clip jumper wires not glow when in the circuit?
Alligator clip jumper wires are used for test purposes only. They are used to jump part of a circuit out while trouble shooting. Because of the low resistance of the combination of the clips and the wire there is no way that the jumper can glow under normal operating conditions. That being said, if the load is of a high amperage and the jumpers can not take the current they will start to get hot up until the point that the circuits protection trips the circuit open.
How do you do the timing on a 1990 Ford telstar?
Many Fords of that vintage required that a jumper be placed on a socket near the distributor. Without the jumper in place it's not possible to change the timing of the engine. Install the jumper, set the timing with a timing light THEN remove the jumper and it should stay. You'll need to get a reference manual to identify the jumper location and to determine the proper timing advance settings.
In a home circuit are the neutral and ground bare wires always connected?
They are always connected, but at one and only one place, the service entrance. For instance, if you are adding a subpanel to an existing house, the subpanel will probably come with the ground bus and the neutral bus tied together with a special bonding screw. To be legal, you must remove this screw, isolating the neutral from ground. The house's main panel still has the bonding screw or jumper in place, and remains the only place the connection is made.
What are barnicals?
Barnical is a term used some times for a jumper wire. Some times due to a design problem on a printed circuit board or in order to make some circuit changes for experiments and design enhancements, you may have to make a connection between electronic parts which is not on the printed circuit. For that you will have to connect and solder wire between the pins/components. This is usually called a jumper wire or a barnical. - Neeraj Sharma
Applications of zero ohm or resistor?
Zero-ohm resistors are used mostly in printed circuit boards in place of jumper wires. They have no to little resistance, so they are used to just connect sections of a circuit. The automatic insertion machines that create PCBs are not adept at connecting jumper wires, but can place zero-ohm resistors easily on the board.
1990 k5 blazer has a 8 in lift with 2 in body lift and since you put the body lift on it will not start everything else is fine but just will not turn over?
Chances are the body lift was made of urethane and has isolated the body from the frame. Try putting a bonding jumper of 4 gauge or larger wire from the frame to the body to re-establish your complete circuit. This may correct your problem.
