RAKocher
Senior Member
- Location
- SE Pennsylvania
Is the cable box's chassis ground and its power cord's neutral connected? How else could this happen?
Coax cable caught fire
- Thread starter nickelec
- Start date
- Status
gadfly56
Senior Member
- Location
- New Jersey
- Occupation
- Professional Engineer, Fire & Life Safety
Open neutral at the service and the unbalanced current returning on the coax shield.
JFletcher
Senior Member
- Location
- Williamsburg, VA
They are via the panel, but that's not the current flow path. See post #8.
hbiss
EC, Westchester, New York NEC: 2014
- Location
- Hawthorne, New York NEC: 2014
- Occupation
- EC
I don't think I've ever seen a cable box or cable modem that has a three-wire line cord. I have to assume that it's listed as grounded through the coax shield.
Probably not much anymore with the flat screens, but you used to see some older TVs with a hot chassis usually due to the internal power line filter components failing. That tended to put some leakage voltage on the "F" connector which caused a spark or a shock when you connected the coax from the cable box.
-Hal
- Status