Phone transformer? What's this?

[Joe Borkowski]

Has anyone seen these and what are they? The little black box is about 1 1/2" x 3" x 1/2" thick. The aluminum enclosure is about 2" x 4" x 10". I advised for them to be removed. 1950's vintage home. Thanks Joe

[Dom D'Agostino]

Old telco demarc for POTS line. Why tell them to remove phone line equipment?

[Bob Elliott]

Old telco demarc for POTS line. Why tell them to remove phone line equipment?

You talk like a splicing tech.
Spent a little time in Local 21 myself.

[Rick Bunzel]

With the big ground cable does the demarc also function as a lightning arrestor?


//Rick

Anacortes, Wa. Home Inspections by Pacific Crest Inspections in Skagit, Snohomish, Whatcom and Island Counties, Washington. (http://www.paccrestinspections.com/Anacortes-wa-Home%20Inspections.htm)

[Bob Elliott]

With the big ground cable does the demarc also function as a lightning arrestor?


//Rick

Anacortes, Wa. Home Inspections by Pacific Crest Inspections in Skagit, Snohomish, Whatcom and Island Counties, Washington. (http://www.paccrestinspections.com/Anacortes-wa-Home%20Inspections.htm)

No ,they need to be grounded also.

[John Kogel]

Around here, the old posts are used for terminals for attaching the new landlines. For some reason, the guys that install telephones in old houses really like those old transformer blocks. :D

[michael Rodney]

It is just a old style terminal block used at at the demarc point. You see where drop wire (authority wire from the street) meets the interior wire (house wire).

Surely not a transformer.

Thanks,
Mike.

[Joe Borkowski]

Thanks to you all. Glad that it is what I suspected. My reason for suggesting removal was because the cover was not secured and I thought there was potential for hot wires to arc against the aluminum cover. I'm relatively new and just haven't seen it all and I expect I never will. The client was not to concerned about using or having a landline anyways. ;)

[Garry Sorrells]

Joe,
Do you know how much voltage / amperage the line carries?

[Joe Borkowski]

No Gary I don't. Did not measure. I did read somewhere that it's about 48 VDC and probably low amperage.

[Rich Goeken]

No Gary I don't. Did not measure. I did read somewhere that it's about 48 VDC and probably low amperage.
48 VDC and 90 VAC (Ringing Signal).