ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
dsk 13
Admin 8
doc 3
Recent Posts
Bathroom electrical
by doc. 08/19/17 06:53 AM
electircal ageing test on IPC
by SIAME. 08/15/17 02:43 AM
electrical aging test on IPC
by gfretwell. 08/15/17 12:27 AM
"Line level" audio on Cat 5?
by gfretwell. 08/08/17 10:39 PM
Fire alarm phone lines and color coding
by gfretwell. 08/08/17 10:26 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,012 Are you busy
175,618 Re: Forum
167,851 Need opinion
Who's Online Now
0 registered members (), 58 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#197687 - 12/14/10 09:31 PM Recall notice: Extech amp clamp  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,327
Alaska


"Live Awesome!" - Kevin Carosa

Arc Flash PPE Clothing, LOTO & Insulated Tools

#197744 - 12/17/10 10:00 PM Re: Recall notice: Extech amp clamp [Re: sparkyinak]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,217
SI,New Zealand
Quote
When the battery runs low, the meters can fail to give an accurate voltage reading, resulting in the operator falsely believing the electrical power is off or low. This poses an electrocution hazard.

Actually, if you use the Prove-Test-Prove method on your test equipment, on a known source of voltage, before and after you've tested something, this sort of thing shouldn't happen.
Having absolute faith in the integrity of your test gear (especially the battery operated stuff) is what is known as complacency.
Complacency kills electricians. shocked


Let's face it, these days if you're not young, you're old - Red Green grin

#197750 - 12/18/10 12:34 AM Re: Recall notice: Extech amp clamp [Re: Trumpy]  
KJay  Offline
Member
Joined: Nov 2007
Posts: 763
MA, USA
From what I can gather, a complaint was filed because the meter displays are equipped with a low battery indicator that doesn’t operate as it is supposed to when the meter is used with a low battery.

The meter will power up normally and the display indicates zero volts, even when voltage is present at the test leads, but the “low batt” indicator does not come on, so apparently there’s no indication that anything is wrong. Personally, I would never trust a meter again if it did that to me even once.


#197762 - 12/18/10 09:50 AM Re: Recall notice: Extech amp clamp [Re: KJay]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,217
SI,New Zealand
As I said KJay, in my post, it is up to the user of the test gear to ascertain that that gear is operating correctly before and after the testing has taken place.
Even if that means using a second piece of test gear.
Wires do break in test leads, if you are using fused test leads, a fuse could have blown, you need to ensure your OWN safety and the knowledge that you have isolated a circuit correctly and have isolated the correct circuit.


Let's face it, these days if you're not young, you're old - Red Green grin

#197821 - 12/21/10 06:05 PM Re: Recall notice: Extech amp clamp [Re: Trumpy]  
AFlannery  Offline
New Member
Joined: Dec 2010
Posts: 1
Orem, UT
Interestingly, this is almost identical to the FLUKE clamp meter recall from last year: Fluke Recall Website http://www.fluke.com/33xrecall

"Through quality assurance tests, we have discovered a potential short circuit connection on the circuit board. This may lead to inaccurate voltage readings including a low or no voltage reading on a circuit energized with a hazardous voltage. This finding could create a hazardous situation if the user were to contact live voltage based on an erroneous instrument reading."


#197919 - 12/31/10 03:25 AM Re: Recall notice: Extech amp clamp [Re: AFlannery]  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,327
Alaska
I agree with you Trumpy 1000% but we live in a would of idiot proofing just so we can breed bigger idiots to surecede the idiot proofing. It what drives our economy


"Live Awesome!" - Kevin Carosa


Member Spotlight
togol
togol
NW In. USA
Posts: 421
Joined: September 2005
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 15 (0.003s) Memory: 0.7789 MB (Peak: 0.9288 MB) Zlib enabled. Server Time: 2017-08-21 04:50:23 UTC