PetrosA
Senior Member
- Location
- Lancaster, Pennsylvania
That panel seems to suffer from serious corrosion, judging by the rust marks on the breaker faces, the rust on the breaker rivets, and both the bottom of the panel inside and outside. Whew.
Kenny clamp? What the ?
- Thread starter ritelec
- Start date
- Status
LOL !
Not sure how it happened? The 2 pole AC and oven where next to each other. Was it loose? Loose and load?
Corrosion? All of the above.
I think I screwed up though. The insurance adjuster is coming over tomorrow. I installed the new panel a bit higher, and pulled slack from the conductors since the basement was open.
No need for splice boxes, troughs, nipples... It looks like a regular panel change/upgrade. So, his $ allowance may be less than what it should have been.
Should have left it as it was another day, we'll see.
I'll look again tomorrow as I left the stuff there, but it didn't look like the rivets where rusty.
The only rust seams to me the bottom. I was thinking condensation and collecting on the bottom, but it's seu so don't think it would be much.
At the meter, the seu drop into the meter is older seu (clothe) and you can see the neutral braid so I figure water was getting in there.
When I removed the meter cover there is no rust inside the meter pan??
Interesting is the utility took the meter last night, so I have to jump the jaws, to make them hot, so I can turn things on/off at breakers to make a directory to pass an inspection to get the meter back to get the home owner back in the house.. (hope the ac and oven are ok)
It's all good.
What's your frequency Kenneth?
I know... but the section I quoted states enclosures, too. A kenny clamp is for GEC metallic enclosure entries and exits... though the latter is atypical of most installations.
. UL 67 list bonding screws for residential panelboard at 30 amperes. Don't rely on the bond screw for ground-fault continuity.
The last sentence there is what I question, NEC wants us to rely on the bond screw, otherwise it would require use of other methods
The 30 amps caught my eye.
Is this UL 67 listing true, but it's ok for NEC.??
Is it marketing for the kenny clip??
Not for the GEC connection to the grounded conductor. As I [vaguely?] pointed out earlier, you cannot land a GEC on an equipment grounding bus (EGB) connected to the enclosure solely by screw and the a bond screw is used as the MBJ/SBJ. There has to be a wire-type MBJ/SBJ sized to Table 250.66 between Grounded conductor/bus and EGB in order to land a GEC on the EGB.... Don't rely on the bond screw for ground-fault continuity.
The last sentence there is what I question, NEC wants us to rely on the bond screw, otherwise it would require use of other methods
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
I agree. They make no sense when they say not to rely on the bonding screw. The bonding screw is not supposed to supply the GEC, it is there to bond the grounded conductor to the service disconnect enclosure. As said the GEC would still typically land on the grounded conductor bus in most service equipment applications.
What they seem to be claiming with the kenny clamp is either the clamp itself is the bonding jumper or that the clamp is the termination for the GEC, if so you wouldn't need to land on grounded conductor bus, just land in the kenny clamp. Bolting a lug to the enclosure is effectively the same thing.
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
That panel looks like it was flood damage, is this left over hurricane damage? is it in a basement?
If it was sure hope you getting paid is not dependent upon the insurance paying:happysad:
If it was sure hope you getting paid is not dependent upon the insurance paying:happysad:
- Location
- Massachusetts
Exactly.
- Status