ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 128 guests, and 9 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
A
Anonymous
Unregistered
I set up a separate circuit for a computer in an apartment with 40A service. When the compressor goes on on a 5000 BTU window air conditioner on a separate circuit, the computer screen jiggles a little. While the effect on the monitor is bad enough, it is logical to assume the computer CPU etc. is seeing the same interference which may be an even worse problem.

Is this normal? Is there anything that can be done to prevent it. The computer and peripherals are plugged into a surge suppressor/ battery back-up.
--TomBrooklyn

Joined: Nov 2000
Posts: 2,148
R
Member
This would not normally be unusual, but I would not expect it on a system with a UPS.
Don(resqcapt19)


Don(resqcapt19)
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
How close is the AC to the monitor? Monitor distortion can be caused by a strong magnetic field which leads to the second question. Is all the grounding, all the way back to & including the service done correctly? Grounding mistakes can lead to magnetic fields that would be capable of causing monitor problems.

Good luck


Few things are harder to put up with than the annoyance of a good example.

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Vlado
Vlado
Croatia
Posts: 28
Joined: February 2011
Top Posters(30 Days)
BigB 4
Popular Topics(Views)
302,772 Are you busy
231,979 Re: Forum
216,703 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5