natfuelbill
Senior Member
Are ther any regulations or codes that specify Electrical Safety Mats, and can you please provide information of the regulation or code reference, chapter/paragraph etc.? I need to know for both above and below 600VAC.
Electrical Safety Mat - Codes or Regulations
- Thread starter natfuelbill
- Start date
- Status
bphgravity
Senior Member
- Location
- Florida
Re: Electrical Safety Mat - Codes or Regulations
NEC section 250.174(C) mandates the use of insulating mats at live-front switchboards. Beyond this, check with your state OSHA requirements.
NEC section 250.174(C) mandates the use of insulating mats at live-front switchboards. Beyond this, check with your state OSHA requirements.
mdshunk
Senior Member
- Location
- Right here.
Re: Electrical Safety Mat - Codes or Regulations
Very many live front switchboard being installed? The only ones I've ever seen were from the turn of the century, mounted on thick slate backboards. Are these the sort of switchboards that the code is referring to? Can't say that I can picture any other type, unless we're talking about a customer owned substation.
Very many live front switchboard being installed? The only ones I've ever seen were from the turn of the century, mounted on thick slate backboards. Are these the sort of switchboards that the code is referring to? Can't say that I can picture any other type, unless we're talking about a customer owned substation.
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Re: Electrical Safety Mat - Codes or Regulations
There is a local company that tests most of the gloves, hot sticks and mats used in western washington. I had a friend who worked there, I asked how many floor mats they test, he said 0.
Safety floor mats are seldom used anymore.
There is a local company that tests most of the gloves, hot sticks and mats used in western washington. I had a friend who worked there, I asked how many floor mats they test, he said 0.
Safety floor mats are seldom used anymore.
ramsy
NoFixNoPay Electric
- Location
- LA basin, CA
- Occupation
- Service Electrician 2020 NEC
Re: Electrical Safety Mat - Codes or Regulations
In 1986 the USAFE weapons shop at Bitburg, Ge. used thick insulating matts during 10kv Hi-Pot testing.
Apparantly combat boots wern't electrical rated with the metal tacks in the heal. I think a few people got hurt that way before the matts were installed.
However, 2 years later in the private sector, 10kv Hi-Pot tests were preformed on autochemistry systems, while laying on a concrete floor.
When Beckman tried to fit us with 100k ohm grounding-wrist bands, to mitigate static damage, I explained ohms law and current through the heart, then kept my IC boards on the floor and said, their grounded.
After I vocalized my observation of the sales rep's feat dragged on the carpet, as he walked foreward to demonstrate the need for his product, the poor guy forgot his routine and broke out in a sweat.
That experience led me to evenually realize my welfare is irrelavant to other people's enrichment.
Matts were needed for that Hi-Pot test, and the wrist ground was a hazard, but without a prior accident, only forceful and collective efforts persuaded the brass.
[ December 29, 2005, 11:35 AM: Message edited by: ramsy ]
In 1986 the USAFE weapons shop at Bitburg, Ge. used thick insulating matts during 10kv Hi-Pot testing.
Apparantly combat boots wern't electrical rated with the metal tacks in the heal. I think a few people got hurt that way before the matts were installed.
However, 2 years later in the private sector, 10kv Hi-Pot tests were preformed on autochemistry systems, while laying on a concrete floor.
When Beckman tried to fit us with 100k ohm grounding-wrist bands, to mitigate static damage, I explained ohms law and current through the heart, then kept my IC boards on the floor and said, their grounded.
After I vocalized my observation of the sales rep's feat dragged on the carpet, as he walked foreward to demonstrate the need for his product, the poor guy forgot his routine and broke out in a sweat.
That experience led me to evenually realize my welfare is irrelavant to other people's enrichment.
Matts were needed for that Hi-Pot test, and the wrist ground was a hazard, but without a prior accident, only forceful and collective efforts persuaded the brass.
[ December 29, 2005, 11:35 AM: Message edited by: ramsy ]
zog
Senior Member
- Location
- Charlotte, NC
Re: Electrical Safety Mat - Codes or Regulations
We use them for battery work all the time, and have installed several for customers in front of MCC's and in substations, the best stuff is called diamond mat.
We use them for battery work all the time, and have installed several for customers in front of MCC's and in substations, the best stuff is called diamond mat.
natfuelbill
Senior Member
Re: Electrical Safety Mat - Codes or Regulations
NEC 430.233 talks about insulating mats. They cloud it up with the term "attendant" Is a qualified person different than an attendant? Gotta be. Will an automatic transfer switch require these mats installed for a qualified person, qp, if making live adjustments, or are the mats only needed for "unqualified" attendant.
NEC 430.233 talks about insulating mats. They cloud it up with the term "attendant" Is a qualified person different than an attendant? Gotta be. Will an automatic transfer switch require these mats installed for a qualified person, qp, if making live adjustments, or are the mats only needed for "unqualified" attendant.
- Status