zbang
Senior Member
- Location
- Roughly 5346 miles from Earls Court
Had a new one last weekend....
At any given event, I expect that at least one truck/trailer will have a N/G bond somewhere in it. Easy to detect and usually easy to deal with. This time, there was only one (the bond was easy to find- it was the black wire between neutral and grounding busses in the trailer's panel; I'm sure it wasn't there last year).
What I didn't expect to find was one with the N and G swapped. The one that was sending 15 amps up the grounding wire; a good sign that something is wrong. The one where the truck's panel was wired correctly as was the supply plug end. The one with stealth 50 amp extension cord and connector hidden under the truck, almost invisible. The error was in the 14-50 range receptacle on the end of the extension (whomever made that cord went to a lot of trouble to do it wrong). And, of course, "it works fine when I use it at home".
A bonus was the generator controller's ground current reading was missing a decimal point so that 15.2 amps read as 152 (twice what any leg was supplying).
(Another bonus was one of the trucks switching on/off something like a 10kw load which played hob with the voltage regulator and got us 135v spikes when the load turned off.)
Fun times and all that
.
At any given event, I expect that at least one truck/trailer will have a N/G bond somewhere in it. Easy to detect and usually easy to deal with. This time, there was only one (the bond was easy to find- it was the black wire between neutral and grounding busses in the trailer's panel; I'm sure it wasn't there last year).
What I didn't expect to find was one with the N and G swapped. The one that was sending 15 amps up the grounding wire; a good sign that something is wrong. The one where the truck's panel was wired correctly as was the supply plug end. The one with stealth 50 amp extension cord and connector hidden under the truck, almost invisible. The error was in the 14-50 range receptacle on the end of the extension (whomever made that cord went to a lot of trouble to do it wrong). And, of course, "it works fine when I use it at home".
A bonus was the generator controller's ground current reading was missing a decimal point so that 15.2 amps read as 152 (twice what any leg was supplying).
(Another bonus was one of the trucks switching on/off something like a 10kw load which played hob with the voltage regulator and got us 135v spikes when the load turned off.)
Fun times and all that
.