White Corrosion in Electrical panel?
#1
02-16-15, 10:42 AM
White Corrosion in Electrical panel?
I opened up my panel to look at availability on the Neutral bars and noticed what looks like corrosion on a few of the screws (white corrosion.) I could feel cold air coming in the main feed through the conduit.
Shouldn't this be air-tight?
Is there supposed to be electrical putty surrounding the sheaths of the main lines coming into the panel?
What do I need to do?
KJ
Shouldn't this be air-tight?
Is there supposed to be electrical putty surrounding the sheaths of the main lines coming into the panel?
What do I need to do?
KJ
#2
02-16-15, 10:49 AM
Group Moderator
Some cold air is normal.
The service cable should be sealed outside at the meter.
Is this a pipe or cable service ?
Pictures are a big help to us. http://www.doityourself.com/forum/el...rt-images.html
The service cable should be sealed outside at the meter.
Is this a pipe or cable service ?
Pictures are a big help to us. http://www.doityourself.com/forum/el...rt-images.html
#3
02-16-15, 10:56 AM
It should be sealed, yes. But often they are not, especially on older services. You can get a brick of "duct seal" for about a dollar and seal up the conduit(s).
#6
02-16-15, 04:08 PM
Group Moderator
Yes.... you can seal the pipe inside but if you have water coming thru the pipe that must still be addressed.
#7
02-17-15, 06:24 AM
Group Moderator
It should really be sealed on both ends. Duct seal is not conductive and you mold it around the wires like clay. It will not loose if properly installed. Do NOT use spray foam.
