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eehecker1234
My current employer requires electrical safety shoes. We have many questions about what that really means. There is a standard from ASTM (F2413-11) but how do you maintain that rating? Do they require daily or before use inspection?  Why are they not discussed in 70E? It is clear about heavy leather work boot but no mention of this type in 70E.… (Show more)
in Electrical
troy@sunsignsaustin.com
NFPA 70 NEC 2017 Article 600.4 (A)   Signs and outline lighting systems.  Signs and outline lighting systems "shall" be listed.   The term "shall" is the most litigated term in law.   My question is: Are all electrical signs required to be listed?   I have spoken to numerous Master Electricians and this particular question is highly debated.… (Show more)
in Electrical
janice.wilson
We have a 4160V wye system that is grounded via a high resistance ground system and we are trying to determine the insulation level of the phase conductors.   We’ve referred to Table 310.104(E) but it doesn’t give any mention to 5kV cable above 100% insulation level.     Note 1 (100 percent insulation level) says: “Cables in this category shall… (Show more)
in Electrical
cwirthmann
Click to view contentElectrical inspector passed this.  Doesn't feel right to me.  If its not grounded then it must have been a two prong before.  Is it ok to just label the plate like this?  
in Electrical
abrar.b
Can any one help me about MCP location and sounder with flasher location according to NFPA-72 in a hotel.
in Electrical
jmerati
Is there a industry excepted definition of a Knowledgeable Person.  I am working on updating my EEWP and we are looking into the approval portion and would like to have a knowledgeable person in this process that would audit the work before the final approval would be granted.  We would have training for those that would be able to fulfill this… (Show more)
in Electrical
abrar.b
please advise me which detector are good for engine hall heat detector or flame detector acording to NFPA-72
in Electrical
abrar.b
please advise me which detector are good for engine hall heat detector or flame detector acording to NFPA-72
in Electrical
abrar.b
i am design a fire alarm system in a hotel which is best for alarming sounder or sounder with flasher. give me NFPA raferance i have NFPA-72 1996 and 2007 edition.
in Electrical
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