Discuss this Gallery 4

on Apr 26, 2016

Regarding slide #7: You can come up with a lack of inhibitor?

1) A rusting panel (see the area behind the line terminals)
2) Multiple wires in a single lug on the load side of the switch - various issues, the lug is only designed for one conductor
3) not using the disconnect switch as a pull box - should have only one set of conductors on the switch
4) what appears to be #12 wire connected directly to the unfused line terminals
5) crossing the line and load between fused and unfused wires
6) no conductor identification, just to start with.

The only obvious defect with this particular installation is the lack of inhibitor?

on Apr 22, 2016

Joseph,

You misunderstand the purpose of the photo. The intent is for the photo to illustrate the violation, not for the comment to analyze the photo.
You are absolutely right that there are many faults in the installation. As a matter of fact, it is an electrical fire waiting to happen.

Best Regards,
David Herres

on Apr 26, 2016

Makes sense, but if you wanted to emphasize the lack of anti-oxidant, you should have shown an otherwise pristine installation. At first glance, it would look fine, but then as you point out, someone could have terminated aluminum wire without the use of anti-ox, hence the violation.

on May 5, 2016

Lack of antioxidant is a violation of the thoroughly good connection rule.

The problem with a directory on the inside of the cover is that it takes extra time for some people to translate that map to circuit breakers and in many panels the stamped circuit breaker numbers have extremely low contrast. Placing circuit information next to each breaker is easier and faster to read, but NEC requires the info to be duplicated inside the cover.

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