0
What size copper main bonding jumper is required based on the service entrance conductors being rated at 250 kcmil thwn-thnn copper?
Wiki User
∙ 14y ago
Based on NEC 250.66- #2 copper or 1/0 aluminum.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Is hydrogen bonding is a type of bonding or not?
Hydrogen bonding is a type of intermolecular force of attractionAdded:This is between molecules.It is not as strong as chemical bonding within molecules (intramolecular) though.
Which type of bonding forms aluminum and fluorine?
Ionic bonding.
What type of bonding involves the sharing of electrons?
Covalent bonding.
The Lewis structure of PF3 shows that the central phosphorus atom has how many non bonding and how many bonding electron pairs?
3 bonding pairs and one lone pair or non-bonding pair
Does metallic bonding occur between atoms of copper or chlorine?
Metallic bonding occurs between copper atoms. Only copper is a metal and has the characteristics needed for metallic bonding. Metallic bonding occurs between atoms with low electronegativities (low tendency to attract electrons from other atoms) and low ionisation energies (little energy required to remove electrons from the atoms). The low tendency for the metallic atoms to keep their electrons allow their electrons to be shared between the atoms, which thus become cations. The cations tend to be very closely-packed; they are not repulsed by their similar positive charges, but attracted to the electrons flowing freely between the cations. Metallic bonding therefore occurs between copper atoms, which have low electronegativity and ionisation energy. Chlorine atoms have some of the highest electronegativity and ionisation energy of all elements, and thus do not exhibit metallic bonding.
Does a notary need to be bonded?
Bonding is not required to be a notary.
When starting a concierge business is bonding required?
maybe it depends on who you are working for.
Explain why one allotrope can conduct electricity?
In one allotrope electrons remain free as charge conductors. In another they may be involved in bonding atoms.
Where can you apply for employment bonding?
You can apply for employment bonding at almost any insurance company. There are different amounts of bonds depending on what you need them for and what is required in the job.
How to ground a gas meter?
n.e.c. 250.104 says the equipment grounding conductor run with circuit conductors feeding a gas appliance is permitted as bonding means
Are metals a good conductors of heat and electricity?
Metals are a good conductor of heat and electricity because of their bonding. Metallic bonding consists of a sea of electrons rather than discreet bonds. The free electrons are able to move very freely. Since electricity and heat need electrons to move, the bonding promotes conductivity.
Why are good electrical conductors?
Their electrons move freely. This is due to the bonding. In metallic bonding the nuclei are surrounded by a sea of electrons rather than discreet paired electrons with covalent bonds.Metals are good conductors of both electric charges and heat because their electrons are "loose."(info from physics book) Some good metal electrical conductors are copper which has a high conductivity, the best pure metal conductor is silver, aluminum is another good conductor. Some good metal electrical conductors are copper which has a high conductivity, the best pure metal conductor is silver, aluminum is another good conductor.
What is required for a bond to be polar?
The bonding atoms/ions should have different values in electronegativity.
'What involves the complete transfer of electrons from one atom to another?
Covalent bonding is the bonding that is required to complete a transfer of an electron from one atom to another.
Can the load wires in an electrical service panel exit from the same end as the service cable and meet code?
Per the 2011 National Electric Code, Art 230 Services:230.7 states:"Conductors other than service conductors shall not be installed in the same raceway or service cable."Exception #1: Grounding conductors and bonding jumpers.Exception #2: Load management control conductors having overcurrent protection.
What is the correct size of main bonding conductors for a tn-s system having 25mm phase?
By rule of thumb, the neutral conductor is half the size of main conductor.
Are metals good electric conductors?
Their electrons move freely. This is due to the bonding. In metallic bonding the nuclei are surrounded by a sea of electrons rather than discreet paired electrons with covalent bonds.Metals are good conductors of both electric charges and heat because their electrons are "loose."(info from physics book) Some good metal electrical conductors are copper which has a high conductivity, the best pure metal conductor is silver, aluminum is another good conductor. Some good metal electrical conductors are copper which has a high conductivity, the best pure metal conductor is silver, aluminum is another good conductor.
