The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Industrail Control Panel bonding per 409.108
by sparkyinak
Yesterday at 06:29 PM
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 10
Texas_Ranger 8
sparkyinak 8
Potseal 6
Who's Online
2 registered (crselectric, mbhydro), 232 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#151022 - 03/28/06 09:21 AM PPE
kdal Offline
Member

Registered: 09/21/05
Posts: 35
Loc: Florida,U.S.A.
I am looking for a good set of PPE.
I have checked Whites,Salisbury,ect.and made a few phone calls.
I prefer a complete kit as opposed to having to buy individual components.
I Googled electrical PPE and found this link. http://www.aplussafety.net/products/store.cfm?d=3053&c=4548&p=16169&do=detail
I called and the price for the 8 cal kit was
$240 and 4 week delivery.
Any comments, links, preferences, ect would be appreciated.
Thanks
Ken Dalton
Electrical contractor
Perry Florida

Top
Arc Flash PPE Clothing, LOTO & Insulated Tools
#151023 - 03/28/06 05:35 PM Re: PPE
Ron Offline
Member

Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
Why are you choosing 8 cal equipment vs. 20, 30 or 40 cal?
How will you decide when to use your 8 cal equipment, and when it isn't enough?
_________________________
Ron

Top
#151024 - 03/29/06 09:30 AM Re: PPE
kdal Offline
Member

Registered: 09/21/05
Posts: 35
Loc: Florida,U.S.A.
Ron
Most of the work I perform on enegized equipment is 208/120 and 240 volt panels.
I am starting a website with some usefull
links.
Take a look at the arc flash calculators and the videos.
The The Mark Standifer Story is worth registering to see.Near the end of the video they give recomendations for ppe at different voltages.
Here is a link to my site. http://www.gtcom.net/~kdal/taylor/county/florida/Dalton.html

Top
#151025 - 03/29/06 11:16 AM Re: PPE
Ron Offline
Member

Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
Ken,
There is a ton of work @ <240 that requires PPE greater than 2. Some people use Table 130.7(C)(9)(a) Hazard/Risk Category Classifications for their PPE selection in lieu of performing a detailed calculation. The two portions of the table that related to panelboards at 240 and below, require you to refer to Notes 1 and 3.
There are lots of 240V installations that have short circuit currents in excess of 25kA and fault clearing time greater than 2 cycles.

If the short circuit currents is in excess of 25kA or the fault clearing time is greater than 2 cycles or you don't check either of those two items, then you cannot use that table and must perform the detailed calculation.

Notes:
1. Maximum of 25 kA short circuit current available, 0.03 second (2 cycle) fault clearing time.

3. For < 10 kA short circuit current available, the hazard/risk category required may be reduced by one number.
_________________________
Ron

Top
#151026 - 03/29/06 12:43 PM Re: PPE
mxslick Offline
Member

Registered: 10/24/04
Posts: 785
Loc: Atomic City, ID USA
Ron:

 Quote:
There are lots of 240V installations that have short circuit currents in excess of 25kA and fault clearing time greater than 2 cycles.
and
 Quote:
Notes:
1. Maximum of 25 kA short circuit current available, 0.03 second (2 cycle) fault clearing time.


What level of PPE would those examples require?

 Quote:
Table 130.7(C)(9)(a) Hazard/Risk Category Classifications


Where is this information located?

Thanks!!
_________________________
Stupid should be painful.

Top
#151027 - 03/29/06 01:07 PM Re: PPE
Ron Offline
Member

Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
mxslick,
It depends on the work type, fault current and clearing time for the upstream protective devices.
The information is available in IEEE 1584 (detailed calculations) and NFPA 70E (chart and detailed calculations).
NFPA 70E can be found at http://www.nfpa.org/aboutthecodes/AboutTheCodes.asp?DocNum=70E click on preview this document.
_________________________
Ron

Top
#151028 - 04/02/06 12:58 PM Re: PPE
mxslick Offline
Member

Registered: 10/24/04
Posts: 785
Loc: Atomic City, ID USA
Thanks for the info, Ron!!

Have a great week, all.....
_________________________
Stupid should be painful.

Top
#151029 - 07/02/06 12:47 AM Re: PPE
Paul O'Connell Offline
Member

Registered: 07/02/05
Posts: 57
Loc: Allen Park, Mi. USA
Ken:

You state most of your work is 201/120 and 240 volt. What PPE do you use when that work that is not most of your work is performed by your electricians.

Top
#151030 - 07/05/06 03:57 PM Re: PPE
VAElec Offline
Member

Registered: 07/26/05
Posts: 48
Loc: Sterling, Virginia, US
Almost a different question, but can you "series rate" PPE? Does 8.6cal/cm sq workshirt (carhartt or bulwark type) plus 15cal/cm sq jacket (salisbury type w/ hood) equal 23.6cal/cm sq protection?

I have some FR clothing and also "PPE" (sold as such)clothing and wonder how/if I can use them together.

(edited for poor math skill) oops.

[This message has been edited by VAElec (edited 07-05-2006).]
_________________________
Pete

Top
#151031 - 07/06/06 04:33 AM Re: PPE
Zog Offline
Member

Registered: 09/13/05
Posts: 116
Loc: Charlotte, NC
The answer to your question about layering is yes, you can add them together.

Actually, if those 2 garmets were tested together as a multilayer garment they would probally have a rating around 40cal, but there is no way to know without actually testing them, but you can get your 23.6 cal.

I agree with Ron that you must be careful using the tables in the 70E, there are alot of limitations and you still need to know the fault current and clearing times.

There is a free calculator that uses the 70E equations at this link http://www.epowerplus.com/Training.htm/download.shtml
_________________________
MV/HV Testing Specialist, "BKRMAN"

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals