ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Recent Posts
Look Ma! I Did It Myself!
by renosteinke - 12/04/23 02:57 AM
Scary Looking Receptacles
by renosteinke - 12/04/23 02:46 AM
Old Computers?
by gfretwell - 11/21/23 03:45 PM
Simplify MOSFET Test With Source Measure Meter
by gfretwell - 11/18/23 09:20 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 34 guests, and 18 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Jan 2002
Posts: 1
Junior Member
I would be grateful for any advice anyone can give me about this persistant problem. I installed a 30,000BTU air condition unit some time ago. It is on a 220V circuit. The technician told me that he was putting two 30amp breakers. One right near the aircondtion unit and one on the main panel box for the house. The problem is that anytime I put on the a/c unit it trips one of these breakers. The catch is though that after I reset the breaker and put back on the unit it works fine. I take off the unit again and put it on and it still works fine. However after about a day has passed without the unit bein on, the unit trips a breaker again. It only trips the breaker on the first time I put on the unit for the day. Wierd huh?. Grateful for your advice.

Joined: Oct 2001
Posts: 81
You might want to take a look at the fan on the unit it may be sticking after sitting for a while cases the unit to trip the breaker had the same problem a while ago and that's what it turned out to be. Many units are supposed to be service each year and the fan motor may have an oil inlet in it if it drys out this sort of thing happens.

Joined: Mar 2001
Posts: 2,056
Does the same one trip each time?

Joined: Oct 2001
Posts: 81
should of said causes not cases sorry

Joined: Jan 2001
Posts: 29
sam Offline
try washing the outside coil. it may look clean but you'll probably be surprized .
inside coil should be washed also. the pressures can cause high amp draw and trip the breaker. be sure to cover exposed wires and openings to the compressor and fan motor.

Link Copied to Clipboard

Tools for Electricians
Tools for Electricians

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
* * * * * * *

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


Member Spotlight
Levittown, PA
Posts: 812
Joined: April 2004
Top Posters(30 Days)
Popular Topics(Views)
313,287 Are you busy
239,195 Re: Forum
222,947 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5