electrialstandards

National Electricity code (NFPA 70) for working spaces while installation of 600 V electrical equipments:- In this article we will discuss about working spaces of electrical equipment’s for voltage level of 600 Volts, Nominal, or Less. Spaces required for all Electrical Equipment:- There should be sufficient Access and working space shall be provided as to do the maintenance and operation of electrical equipment safely. (A)   Working Space:- There should be due attention to be taken regarding working space of equipment working at 600 Volts or less. This should comply with working space requirement for examination , adjustment, servicing or maintenance. The working spaces requirement will be shown in table as below:- (i)                  Depth requirement of Working Space:- The depth requirement of working space in the direction of live parts shall not be less than that specified in table below unless th...

NFPA – National Fire protection association 70 is also known as National Electrical Code Examination, Identification, Installation, and Use of Equipment as per NFPA 70:- (i)                  Examination:- In judging equipment, considerations such as the following shall be evaluated: (1)    Equipment usage can be identified by an equipment description either marked on the product or by description provided with a product to identify the suitability of the product for a (a)     Specific purpose, (b)    Environment, or (c)     Application Conditions required for its usage and limitations or other pertinent information may be marked on the equipment, included in the product instructions, or included in the appropriate listing and labeling information. Suitability of equipment may be evidenced by listing or labeling. (2)    Mechanical strength and durabi...