ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
New fan motor for Panasonic
by HotLine1. 06/25/19 03:53 PM
Burning out of return(white) side of 120volt rec
by crselectric. 06/14/19 02:15 AM
Video door bell causing chime activation of coil
by JoeTestingEngr. 06/13/19 12:43 PM
Troubleshooting Voltage Drop Across Relay
by gfretwell. 06/09/19 11:49 AM
Apple Recalls Three-Prong Wall Plug Adapters
by Admin. 06/05/19 09:06 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 7 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
120 volt on switch #47107
01/09/05 01:57 PM
01/09/05 01:57 PM
C
cka123  Offline OP
Junior Member
Joined: Jan 2005
Posts: 2
Hi everyone.

I was replacing an old light switch with knob and tube wiring. After removing the switch I checked the voltage with my meter between the 2 switch wires and I get 120 volt reading yet when I connect them together they make the light work. Can anyone explain what's going on?

Thanks.

Work Gear for Electricians and the Trades
Re: 120 volt on switch #47108
01/09/05 02:20 PM
01/09/05 02:20 PM
G
golf junkie  Offline
Member
Joined: Apr 2001
Posts: 507
York, NE
Sounds normal to me.

The meter is in series with the light bulb.

Re: 120 volt on switch #47109
01/09/05 02:41 PM
01/09/05 02:41 PM
P
PCBelarge  Offline
Member
Joined: Jun 2003
Posts: 681
Dobbs Ferry, NY, USA
Cka
When you are touching the prods of your tester to the two conductors you are in essence completing the circuit. The circuit is a 120 volt circuit, so your tester will read 120 volts.

Pierre


Pierre Belarge
Re: 120 volt on switch #47110
01/09/05 02:50 PM
01/09/05 02:50 PM
C
cka123  Offline OP
Junior Member
Joined: Jan 2005
Posts: 2
Thanks guys. I guess if I removed the light bulb I would not get 120v reading on my meter.

Appreciate your response.


Featured:

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

 

Member Spotlight
Niko
Niko
Campbell, CA
Posts: 356
Joined: August 2006
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
255,877 Are you busy
191,856 Re: Forum
181,618 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.027s Queries: 14 (0.006s) Memory: 0.9584 MB (Peak: 1.0887 MB) Zlib enabled. Server Time: 2019-06-26 14:09:44 UTC