Simple fan wiring question

[JasonG]

Hey all.

I've got an old bathroom exhaust fan that I want to use for ventilation in
my garage. The fan has what looks like a transformer built into it and has
3 wires (Black, White and Red). I wanted to just wire it to a 2 prong plug
that I can just pop into a wall outlet when I want the fan turned on.
Question is.. which two wires do I connect the plug to? I've had success
connecting the White and Black, but also the White and Red. Is it dangerous
to only connect two of the three fan wires to a 2 prong plug?

Any suggestions would be appreciated.

Thanks,
Jason.

 

[SQLit]

Hey all.

I've got an old bathroom exhaust fan that I want to use for ventilation in
my garage. The fan has what looks like a transformer built into it and has
3 wires (Black, White and Red). I wanted to just wire it to a 2 prong plug
that I can just pop into a wall outlet when I want the fan turned on.
Question is.. which two wires do I connect the plug to? I've had success
connecting the White and Black, but also the White and Red. Is it dangerous
to only connect two of the three fan wires to a 2 prong plug?

Any suggestions would be appreciated.

Thanks,
Jason.

does the fan change speeds connected to different color wires?

 

[Bill Kaszeta / Photovoltaic Resources]

Hey all.

I've got an old bathroom exhaust fan that I want to use for ventilation in
my garage. The fan has what looks like a transformer built into it and has
3 wires (Black, White and Red). I wanted to just wire it to a 2 prong plug
that I can just pop into a wall outlet when I want the fan turned on.
Question is.. which two wires do I connect the plug to? I've had success
connecting the White and Black, but also the White and Red. Is it dangerous
to only connect two of the three fan wires to a 2 prong plug?

Any suggestions would be appreciated.

Thanks,
Jason.

No green grounding conductor??
Bill Kaszeta
Photovoltaic Resources Int'l
Tempe Arizona USA
[email protected]

 

[John G]

No green grounding conductor??
Bill Kaszeta
Photovoltaic Resources Int'l
Tempe Arizona USA
[email protected]

There was a time long long ago 50s or 60s when Germany used red for the
ground connection.

This fan needs a careful inspection especially as it was said by the OP
to be OLD.

If the "transformer" has only 2 connections it could be a choke
(inductor) for the low speed.

Australian code today would say that it must have a green ground
connected to the frame and back to the building ground system. I guess
the USA is the same.