ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
by Rabbit. 03/20/18 08:23 PM
Recall notice: Southwire wi-fi wall switches
by sparkyinak. 03/15/18 06:03 PM
Goodman Manufacturing Recalls Modular Blowers
by Admin. 03/13/18 10:40 PM
MAAX Spas Recalls Hot Tubs and Swim Spas
by Admin. 03/13/18 10:29 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 4 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Voltage Leakage Testing #184794
02/21/09 10:55 PM
02/21/09 10:55 PM
Ek64911  Offline OP
New Member
Joined: Sep 2005
Posts: 5
I was wondering if anyone here does voltage leakage testing. I have a customer that has asked my company to perform these tasks. I know little on this topic and I was wondering if someone could tell me what tools are required and where I could take training?



CT El.Unlimited Contractor
MA Master Electrician
RI El.Contractor
Work Gear for Electricians and the Trades
Re: Voltage Leakage Testing [Re: Ek64911] #184949
02/26/09 01:15 PM
02/26/09 01:15 PM
Zapped  Offline
Joined: Oct 2002
Posts: 482
Huntington Beach, CA, USA
Do you mean voltage drop or current leak? A combination of the two would then be power loss, which is what I imagine they are attempting to find due to suspicion that they are paying for more power than they are actually using.

I'm sure there are some testing devices for more specific, but using an ammeter and a voltage meter you can probably narrow down a potential problem.


- With an active device, such as a motor/fridge/etc., you could take a an ammeter reading near the device and then back at the panel to see if there is a noteworthy difference, indicating a "leak", or draw, somewhere on the circuit.

- You could take an ammeter reading with the device on the circuit inactive to see if there is a current draw when there shouldn't be (again, take readings near the device and then back at the panel).

- You could simply shut off the main disco and see if the meter is still spinning


- Test voltage on a particular circuit at the panel and then at the end of the circuit run to find a difference

- You again try this with the circuit load activated to see if the voltage comes down under load.

Remember your Ohms law - voltage drop increases wattage at a particular amperage. A voltage drop can increase power consumption.

Good Luck!


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


Member Spotlight
kamloops BC Canada
Posts: 1,142
Joined: May 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 5
Trumpy 5
Popular Topics(Views)
244,544 Are you busy
181,668 Re: Forum
171,714 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.014s Queries: 15 (0.004s) Memory: 0.9431 MB (Peak: 1.0600 MB) Zlib enabled. Server Time: 2018-03-22 06:20:53 UTC