|Here is what people are thinking/guessing:
It loooks like the remains of a whole house vacuum system.
The low voltage wiring was used to switch on the main unit
when a cap was opened and a vacuum hose inserted.
|had one with wires in the hose to power a beater brush,,,
been a while but seems like you simply plugged in the hose
and two spring loaded BB's juiced it up and the flip lid wall
cover also had a contact ... i forget exacts,,, nutone system
on offices built 1970. Was No cloth covered bell nor nutone
control wire in 1970.
Well, I cut the pipe off and lone behold, the pipe was
printed on the back side: 'CENTRAL VACUUM'.
Thanks all for the FAST responce.
The wires are low voltage to start the vacuum when you
plug the hose in. They are not power for the beater.
Eddie...I looked at your website...nice. I am in Minnetrista....good
nutone\ use to have only two hoses, powered and unpowered
Nutone/Broan current models;
BN32 Standard Hose
BN30LV Standard Low-Voltage Hose
BN30CC Standard Current-Carrying Hose
BN30DV Deluxe Current-Carrying Hose
See if that fits your Shop-Vac hose.