UPS Tripping 20A GFCI In Basement - Electrical - Page 2 - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical


Thread Tools Display Modes
Old 09-18-2010, 01:58 PM   #16
Seasoned DIYer
Join Date: Oct 2007
Posts: 187
Rewards Points: 150

UPS tripping 20A GFCI in basement

You could float the ground pin, then use a mA meter to measure the current going to ground.

IT equipment are FCC listed for both home and office(commercial) use, but that only covers EMF noise considerations. Computer equipment rooms are not GFCI'd and many IT support equipment are not designed to be used downstream of highly sensitive residential GFCI.
Attached Thumbnails
UPS tripping 20A GFCI in basement-rep1-5.jpg  


HVAC_NW is offline   Reply With Quote
Old 07-27-2013, 03:27 PM   #17
Join Date: Jul 2013
Posts: 1
Rewards Points: 10

UPS tripping 20A GFCI in basement

A UPS does lots of things that a GFI does not like -- as mentioned in posts above: bad power factor, leaky grounds, high inrush.

In the past, we have used "power conditions" to clean up nasty conditions like these. You want a passive "resonant" conditioner that is basically a giant coil (transformer) and capacitor that resonate at 60 Hz. You put this inline and it cleans up voltage/current phase shifts and sudden changes well. It is not a voltage regulator per se, and not a surge protector.

Or, try a different brand of GFCI. They all behave differently.

cow_duo is offline   Reply With Quote
Old 07-27-2013, 04:35 PM   #18
joed's Avatar
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 10,114
Rewards Points: 7,022
Blog Entries: 11

UPS tripping 20A GFCI in basement

This post is 3 years old. I hope the issue is resolved by now.


Do not PM with questions that can be asked in a forum. I will not respond.
joed is online now   Reply With Quote
The Following 3 Users Say Thank You to joed For This Useful Post:
frenchelectrican (07-27-2013), jbfan (07-27-2013), Speedy Petey (07-27-2013)

ups gfci trip

Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cutting out a concrete basement floor jeffhoward001 Building & Construction 21 01-17-2012 09:51 PM
Arcfault GFCI breaker tripping shogy Electrical 4 10-17-2009 03:28 PM
GFCI Trips campbellpt Electrical 28 11-21-2008 04:06 PM
new gfci on new circuit pops rtoni Electrical 39 11-15-2008 11:18 AM
having trouble with the gfci tripping paul110h Electrical 37 06-12-2008 11:30 AM

Top of Page | View New Posts