Electrical Safety and Arc Flash Mitigation

Article 80 of D.Lgs 81/08 and the methodology of NFPA 70E and the IEEE 1584 algorithm

GT Engineering performs analyses of Electrical Hazard based on what is required by the Article 80 of D.Lgs 81/08. We consider both the hazard of direct and indirect contacts and the arc flash hazard, using the methodology of NFPA 70E and the IEEE 1584 algorithm.
What has to be bonded, according to the NEC?
THE DOUBT: What is the rule to be followed in order to decide what has to be connected to a PE cable? What shall be Grounded and what shall be Bonded? We c...
Bonding, Earthing and Grounding, what is the difference?
THE DOUBT: What is the difference between Bonding, Earthing and Grounding? Is the motor frame grounded or bonded? ...
Is the simbology defined by IEC 81346-2 compulsory?
IEC 81346-2 Standard: compulsory symbology and codes? ...
Seven reasons to Bond or Earth a metallic part
THE DOUBT: Why a metal part has to be connected to a PE (Protection Earth) cable? CONSIDERATIONS: There are 7 reasons why a piece of metal has to be bond...
Exposed Conductive part and grounding
  THE DOUBT In the design of the electrical system, how can I distinguish which of the metal parts is an exposed conductive part? Is bonding all meta...
EN 60204-1: Is it possible to delegate safety aspects to the users?
  THE DOUBT Can the machinery manufacturer require the user to install a Fuse or a Circuit Breaker to protect its Electrical Equipment? Can he require th...
Circuit breakers
  Circuit breakers are meant to protect the circuit from overcurrents, which can be divided in two categories: overload, i.e. a current that settles in...
Use of type B Residual Current Device
There is often confusion as to whether or not type B residual current devices are required to protect lines in which variable speed drives are used to control a...
Machinery Safety
Protection from direct contacts: IPXXB or IP2X?
THE QUESTION On the electrical standard, we often read that the assemblies and/or the electrical equipments in general shall provide a degree protection against...
Type G and residual current devices: what are the differences?
  THE DOUBT What are the differences between RCDs and Type G Ground Fault Protections?   CONSIDERATIONS Among possible causes of electric shock the...
What colour is the neutral conductor according to EN 60204-1?
THE DOUBT: Most of us know that Light Blue is the colour of the neutral conductor inside an industrial control panel. The doubt is the colour of the &ldquo...
Machinery Safety
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