A little help please. A contractor replaced a 120v outdoor luminaire with a 12v luminaire. A small electronic transformer was installed at the luminaire to make the conversion. Everything is listed for the purpose.
The problem is that when power is applied to the line, it trips the GFCI breaker (outdoor rated receptacle). All connections seem good, the transformer was replaced and the GFCI was replaced - still the breaker trips.
I don't know if it matters but the transformer does not have a ground wire (plastic enclosure). The ground wire to the transformer location was taped off. The luminaire is an MR-16 type and has no connection to ground.
I spoke with the transformer manufacturer and he couldn't think of any reason for this aside from the possibility that there might be a nick in either the 120v or 12v wires. He also mentioned that electronic transformers might lose some voltage due to capacitance passed over to the secondary side of the transformer (don't understand that).
Can anyone think of a possible cause for the GFCI to trip in this scenario (aside from a nick in the wire)?
The problem is that when power is applied to the line, it trips the GFCI breaker (outdoor rated receptacle). All connections seem good, the transformer was replaced and the GFCI was replaced - still the breaker trips.
I don't know if it matters but the transformer does not have a ground wire (plastic enclosure). The ground wire to the transformer location was taped off. The luminaire is an MR-16 type and has no connection to ground.
I spoke with the transformer manufacturer and he couldn't think of any reason for this aside from the possibility that there might be a nick in either the 120v or 12v wires. He also mentioned that electronic transformers might lose some voltage due to capacitance passed over to the secondary side of the transformer (don't understand that).
Can anyone think of a possible cause for the GFCI to trip in this scenario (aside from a nick in the wire)?
