bdoles2
(Brian K. Doles)
May 17, 2007, 4:17pm
1
Here’s a trick question for some folks. Guess what caused the burn marks on this switch. I know, and I’ll post the other picture later. There were several other switches mounted like this with similiar marks.
It stumped me until I came across the last switch.
tmantsch
(Tim C. Mantsch, TREC# 8647)
May 17, 2007, 4:28pm
2
Was there a “dimmer” on the last switch?
bdoles2
(Brian K. Doles)
May 17, 2007, 4:32pm
3
Nope…
Hint: the box itself is plastic.
Cigarette butt? or perhaps some other open flame rested on top of the box - candle?
tjansson
(Thomas Jansson, CMI- IL Lic # 450003340)
May 17, 2007, 5:37pm
7
I’ll take a guess…
conduit used as ground
interruption of ground continuity by plastic boxes
mlarson
(Michael Larson, WI Lic. # 1672-106)
May 17, 2007, 6:18pm
9
bdoles2:
Here’s a trick question for some folks. Guess what caused the burn marks on this switch. I know, and I’ll post the other picture later. There were several other switches mounted like this with similiar marks.
It stumped me until I came across the last switch.
What’s going on with the paint behind the EMT in pic 1?
bdoles2
(Brian K. Doles)
May 17, 2007, 6:25pm
10
Flat paint rolled over a gloss. Crappy paintjob that’s all.
mlarson
(Michael Larson, WI Lic. # 1672-106)
May 17, 2007, 6:27pm
11
Faked me out. Looked like paint blistering from heat. Darn web photos.