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
Safety at heights?
by HotLine1
Yesterday at 08:51 PM
International Wire Colour Codes
by Texas_Ranger
Yesterday at 03:29 PM
Looking for older post
by Texas_Ranger
Yesterday at 03:22 PM
Last time to chat here
by Trumpy
01/20/17 11:41 PM
Unsafe Situations
by Trumpy
01/20/17 09:46 PM
New in the Gallery:
Desk-mounted "power-board"
Shout Box

Top Posters (30 Days)
Admin 35
HotLine1 21
Ruben Rocha 17
gfretwell 16
Trumpy 15
Who's Online
0 registered (), 66 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#197687 - 12/14/10 05:31 PM Recall notice: Extech amp clamp
sparkyinak Offline
Member

Registered: 07/08/07
Posts: 1308
Loc: Alaska
_________________________
"Live Awesome!" - Kevin Carosa

Top
Arc Flash PPE Clothing, LOTO & Insulated Tools
#197744 - 12/17/10 06:00 PM Re: Recall notice: Extech amp clamp [Re: sparkyinak]
Trumpy Offline


Member

Registered: 07/05/02
Posts: 8560
Loc: 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

Top
#197750 - 12/17/10 08:34 PM Re: Recall notice: Extech amp clamp [Re: Trumpy]
KJay Offline
Member

Registered: 11/27/07
Posts: 763
Loc: 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.

Top
#197762 - 12/18/10 05:50 AM Re: Recall notice: Extech amp clamp [Re: KJay]
Trumpy Offline


Member

Registered: 07/05/02
Posts: 8560
Loc: 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

Top
#197821 - 12/21/10 02:05 PM Re: Recall notice: Extech amp clamp [Re: Trumpy]
AFlannery Offline
New Member

Registered: 12/21/10
Posts: 1
Loc: 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."

Top
#197919 - 12/30/10 11:25 PM Re: Recall notice: Extech amp clamp [Re: AFlannery]
sparkyinak Offline
Member

Registered: 07/08/07
Posts: 1308
Loc: 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

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