0
How what and when can a perfectly designed and installed earthing or grounding system become destructive rather than protection to equipment or personnel?
Wiki User
∙ 14y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What do grounding rods do?
If allowed by local codes and regulations, grounding or earthing rods may be used for making safety protective grounding connections to any type of equipment including machinery, household appliances, metal pipework, etc.Whenever and wherever they are needed, grounding or earthing rods must be installed by driving them firmly and deeply into suitably prepared soil within the ground at the earthing point.However nowadays the latest National Electrical Codes and Wiring Regulations in most developed countries insist on using a system of safety grounding wires which are not connected to separate grounding rods installed for each piece of equipment. In that system the safety grounding wires must all be run back to the main circuit breaker panel because it is the main circuit breaker panel which is now the sole point of connection to the main safety earthing point for the whole building or site.Nowadays the main safety earthing point itself may or may not be an actual grounding rod driven into the ground because many codes and regulations now insist that the main safety grounding or earthing point must be made by a well-made connection to the grounded/earthed protective safety sheath of the electricity utility company's service cable coming onto the property, i.e. the site, home or other building. What is required depends entirely on the electrical codes and/or wiring regulations of each particular country.That system provides a better and safer way of providing protective grounding connections for equipment including machinery, appliances, metal pipework, etc.
Does a ground wire have to be connected to the service head?
Not directly. Grounding bushing on either side of the interior meter enclosure are installed to keep the continuation of the grounding system to all metallic parts of the system.
What would you do if you found out that auxiliary apparatus to be installed is not according to specification?
If the equipment is not as specified find out why it was ordered that way. The installer is usually the last to find out about modifications to equipment. Do not connect the equipment as it might have to be returned to the manufacturer for the correct equipment. Most manufactures will not take equipment that has been installed back into their inventory.
What are some dangerous situations involving static electricity?
Grounding is the only way to handle static electricity. Ground all metallic parts to one another and then take the ground wire to installed grounding electrodes.
What article in the electrical code states that you need a GFCI close to hot tub?
NEC 680.22 Grounded Bonding Grid poolsAn equipment potential bonding grid to mitigate step and touch voltage potential shall be installed at outdoor pools, spas and hot tubs as well as livestock areas, and at outdoor electrical equipment in and adjacent to natural and artificially made bodies of water.NEC 680-40 Spas and hot tubs installed outdoors shall comply with the specific grounding and bonding requirements of a permanently installed swimming pool.NEC 680-70 A hydro massage bathtub, defined as a permanently installed bathtub with a re circulating piping system, designed to accept, re circulate and discharge water upon each use, and its associated components, shall have ground-fault circuit-interrupter protection.
What is the smallest size of a common grounding electrode conductor installed for multiple separately derived systems?
3/0 awg wire
Every business should have security equipment installed to protect the employees and to stop theft.?
Every business should have security equipment installed to protect the employees and to stop theft.
Are ground wires required in steel or aluminum flex conduits?
Yes, any flexible conduit that has live wires drawn into it must have a ground wire also installed with the "hot" conductors. The reasoning behind this rule is that the flex in the conduit is coiled and has a long length to it. The continuation of the grounding medium through the tightness of the conduit connectors to the flex was not considered a properly secured grounding system so to overcome this weakness in the grounding system, a ground wire now has to be installed.
When was car stereo equipment first installed in vehicles?
The first instance of stereo equipment that was made to be installed in a car was in 1930. It was produced by the Galvin Corporation and quickly became very popular.
Do you need antivirus protection on a blackberry?
No, it is already installed in most units
How to ground the server rack?
Data Centres can have up to 30 times the electrical density of a standard office building and with high safety and power demands. For safety reasons, low-voltage systems—such as electrical services, telecommunications equipment—are required to be bonded to ground per national and local electrical codes and industry standards. A server rack grounding system is essential to ensure data centre’s uptime. But before going into the detail of how grounding works well for your rack, let’s first see the key difference between Grounding and Bonding. Bonding is generally done as a protective measure from electrical shocks by joining the last of metallic pieces to form a conducting path. Grounding, however, is any intentional or unintentional connection between an electrical circuit and the earth. Grounding ensures all metal parts of an electrical circuit are connected to the earth. It doesn’t impact the regular working of the electrical system. Bonding alone does not manage to protect anything, but if one of the cabinet boxes is grounded, electrical energy stock up will not be possible and the server rack will be safe from any potential threat. Why are bonding and grounding important……... In a successfully installed grounding and bonding system, leakage currents have to be deviated from the data centre equipment. It will bond metallic components to the system in a way that conductive materials at the same electrical potential to decrease the current flow. If the current were to reach the equipment, it could cause great damage. To avoid any adverse effect to the performance of electronic equipment grounding & bonding techniques must be properly applied since IT equipment is highly prone to get damaged due to leakage current.
Do all Chrysler sebring have sat nav installed?
Optional equipment.
