Comcast Bonding & Grounding

Status
Not open for further replies.
Pierre C Belarge said:
It is possible that a meterpan with an isolated neutral is installed by accident..I have come across it during inspections - stock item installed by one not taking a close look at what he grabbed off the storeroom shelf.
Click to expand...
Then what you describe would seem to be a non-compliant installation of a meter can, if it is not bonded by some means.
 
BUT, BUT, BUT and I mean a BIG BUT...When you use a meter can downstream from a service disconnect for sub metering, Electricians need to purchase a meter can with an isolated neutral. Almost every commercial office building in Wash Metro area has this problem/issue.
 
brian john said:
BUT, BUT, BUT and I mean a BIG BUT...When you use a meter can downstream from a service disconnect for sub metering, Electricians need to purchase a meter can with an isolated neutral. Almost every commercial office building in Wash Metro area has this problem/issue.
Click to expand...

It may not be good design but it is allowed by the NEC.

Check out 250.142(B) Exception No 2.

It even recognizes that it would effect GFP.
 
2005 says:

(1) No service ground-fault protection installed.
(2) All meter sockets enclosures are located immediately adjacent to the service disconnecting means..

IMMEDATLY ADJACENT another clear concise statement.
 
Last edited:
Comcast Bonding and Grounding

Comcast Bonding and Grounding

If you attended a Comcast class that told you a rebar grounding rod is the most effective grounding method,someone should inform the instructor that he is wrong. (So much for UFER ground) It is unfortunate that so many catv installers are so miss informed.

One more reason why they should be made to pull permits and that there work should be inspected.
 
Comcast Bonding& grounding

Comcast Bonding& grounding

nakulak said:
I agree with the whole idea that cable, phone, tv, etc. installers be required to bond to the elect service. Since they are not expected to be adept at proper NEC grounding practices, why should they be put in the position to fail ? This makes great sense. Imaging if the phone/cable installer poorly grounded their system to their own ground. Imagine that the cable accidently became energized due to an electrical fault. With the poorly grounded/non-bonded system, a phone user who happened to be in contact with, say, a metal appliance would then be the path to ground (electrocution). On the othe hand, if the system were bonded per the directive above, it would fault the energized ckt directly.
Click to expand...

Why should they not be expected to be adept at proper NEC grounding practices?
 
stickboy1375 said:
Probably not many, but what about equipment/house damage?
Click to expand...


BINGO, I went to a house a few years ago where the Comcast Box started a fire on the side of a 3 decker. I did an inspection for the homeowner and found that the CATV box was grounded to a water spigot on the back of tghe house. Now this may seem functional, but as many know most landlords will not provide exterior water sources. In this case the spigot was cut off in the basement. No ground path... Then upon further inspection of the building system, I had found that a new water main had been installed and the GEC(the only one) was left dangling.DOH.

BTW Comcast ended up paying for the repairs(minor). The vinyl siding took most of the hit.

Tom
 
Status
Not open for further replies.
Top