Voltage drops to zero from 110 under load

[FastTracker]

an old mercury vapor has 110 at the socket until you put a load on it then it goes to zero? I am thinking a loose neutral at the source or a broken/loose wire in the run somewhere with an induced voltage any ideas?

 

[iwire]

an old mercury vapor has 110 at the socket until you put a load on it then it goes to zero? I am thinking a loose neutral at the source or a broken/loose wire in the run somewhere with an induced voltage any ideas?

You are on the load side of the ballast, have you checked the voltage on the supply side of the ballast.

 

[FastTracker]

an old mercury vapor has 110 at the socket until you put a load on it then it goes to zero? I am thinking a loose neutral at the source or a broken/loose wire in the run somewhere with an induced voltage any ideas?

yes the line drops to zero

 

[FastTracker]

yes it drops to zero on the incoming

 

[FastTracker]

fasttracker

fasttracker

yes line drops to zero

 

[ActionDave]

an old mercury vapor has 110 at the socket until you put a load on it then it goes to zero? I am thinking a loose neutral at the source or a broken/loose wire in the run somewhere with an induced voltage any ideas?

I agree. Bad connection.

 

[iwire]

I agree. Bad connection.

Or its just phantom voltage.

What voltage is supposed to be at the supply of this ballast?

 

[Dennis Alwon]

I also agree - bad connection. The connection is enough to read voltage but when a load is applied there isn't enough of a connection to carry the load.