42 watt bulb using 200 watts????


Old 02-13-10, 07:28 PM
Thread Starter
Join Date: Jan 2009
Location: PA
Posts: 33
Received 0 Votes on 0 Posts
42 watt bulb using 200 watts????

I bought a Reliance amp/watt load tester and found while checking my florescent bulbs I found a 23 watt using 130 watt draw and a 42 watt drawing 200 watt draw. Why is this?
I insalled a 60 watt incandesent and it showed 60 watt draw so I know the tester is working.
Sponsored Links
Old 02-13-10, 07:39 PM
Join Date: Oct 2008
Location: New England
Posts: 10,406
Received 23 Votes on 21 Posts
Rick, I found one negative report, may be others, but it matched your problem "it reports way high on non-sinusoidal loads." Let's see if anyone else has experience with one, but I would keep my receipt handy.

Old 02-13-10, 07:48 PM
Thread Starter
Join Date: Jan 2009
Location: PA
Posts: 33
Received 0 Votes on 0 Posts
you think the bulbs or tester? are bad
Old 02-13-10, 10:53 PM
Join Date: Mar 2006
Location: NE Wis / Paris France{ In France for now }
Posts: 4,808
Received 0 Votes on 0 Posts
The issue with the tester they do not read the harmomic load very well as I allready see it from my tester so to order to read the high harmonic or electronic loads I have to use the true RMS test meter which it will read thru the high harmoic and read the true Root Mean Square.

That one reason why some tester fail to read the true wattage on CFL due the electronic ballast that run very high HZ and it can throw the test meter way off wack.

Same thing if you try to read the computer power drawage it can get false reading with average reading test meter and with True RMS meter it will reflect correct wattage / amprage reading.

That why some of very good well priced test meter can able have this feature they cost more than standard test meter but it will do the task nice.


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes
Ask a Question
Question Title:
Your question will be posted in: