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homevisionin
main lug subpanel  I was working on a 200 amp panel and I came across a sub-panel 8 space 8 circuit maxed out  that has an overcurrent protection 2 pole 30 amp with a 10/3wire  the 200 amp is maxed out.     Q: wherein the code# NFPA 70# dose it mentions the minimum conductor size for sub-panel?#    P.S i checked in article 408 
in Electrical
thomas.crozier
I am an electrician at a VA health care facility. I was recently tasked with doing a Relocatable Power Tap (RPT) audit of all of our patient care rooms. I understand that the area within 6 feet of where the patient receives care the RPT has specific requirements for the type of RPT and the equipment it can support. My question is specific to the… (Show more)
in Electrical
sub3marathonman
Hoping to hear some opinions about the dilemma.   Situation:  A home entertainment center, which now has an uninterruptible power supply.  The UPS is currently plugged into an outlet, definitely acceptable.  However, on occasion I want to move the UPS to a different location.  These occasions are very rare, until now not every 90 days.  When I… (Show more)
in Electrical
nelsoncanteri
Hello Gentlemen, I am an instructor here in Brazil, and in class, electricians always complain that they cannot use the insulating glove in conjunction with the leather glove to perform tasks that require greater “sensitivity” and “accuracy” in jobs up to 1,000 V in (electrical panels, changing sensors on machines, checking voltage on various… (Show more)
in Electrical
carledge
As it pertains to NFPA 70E's requirement of placing a device, piece of equipment etc in a "Electrically Safe State", you turn off a breaker to a light switch or outlet. The next step is to verify via a meter that the voltage is absent. This requires you to break the Arc Flash boundary of 18" per table 130.5. Is there anyone out there that has run… (Show more)
in Electrical
apurvadave
I have electrical service conductors going into trough.  From trough inside service cables their is connection tap three separate service  disco enclosures with fuses.   I have one grounding electrode conductors from each of the service disco enclosure to ground bus bar.   NEC 2014 Section 250.64 says grounding electrode conductors at the… (Show more)
in Electrical
carledge
As it pertains to NFPA 70E's requirement of placing a device, piece of equipment etc in a "Electrically Safe State", you turn off a breaker to a light switch or outlet. The next step is to verify via a meter that the voltage is absent. This requires you to break the Arc Flash boundary of 18" per table 130.5. Is there anyone out there that has run… (Show more)
in Electrical
chong
Dear Sir,   We are working on the fire protection system for a Ship-to-Ship (STS) transfer operation is the cargo transfer between two ships that are moored alongside each other. Types of cargo transferred via STS includes crude oil, fuel coil, liquefied gas (LPG or LNG) or bulk cargo.   For your information, the fire protection system only… (Show more)
in Electrical
lfelsch
The wording in the 2017 NEC regarding physically impaired and totally flat counter tops at islands and peninsulas has been removed. 
in Electrical
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