Pool light transformer came with safety capacitor
- Thread starter Misael
- Start date
New Built-in Noise Filter Reduce electronic noise and interference in low-voltage lighting applications through the built-in noise filter found in IntermaticPX50, PX100 and PX300 models (including stainless steel models).
- Jul 21, 2013
- 65,062
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Resolving GFCI Nuisance Trips
NOTE: As of June 29, 2015, UL has issued major revisions to UL943, the standard for GFCI safety.
These changes now require GFCI breakers to “auto-monitor” or “self-test” the ability of the GFCI to respond to a ground fault.
Due to these recent changes, breakers could be more susceptible to nuisance tripping.
If you are experiencing this issue please read the following information.
Symptom
• An isolated transformer for low volt lighting is installed.
• Turning the light(s) OFF or ON/OFF either via light switch or relay causes a GFCI breaker to trip, even on an unrelated circuit.
Cause
• The inductive kick of an isolation transformer causes a brief arc across the switch contacts which injects arc noise into the supply wiring.
This brief noise feeds back to the panel and to all the installed breakers.
The circuitry inside the GFCI breaker may react to the arc noise and trip, even though there is no ground fault current present.
Approved Solution
• Connection of a Hayward GLX-HAL-XSNUB snubber capacitor (arc suppressor) across the primary leads (line to neutral) of the transformer on the load side of the light switch or relay.
What does a Snubber do?
A snubber is a plastic-film high voltage capacitor that will suppress (“snub”) the voltage spikes in electrical systems such as the inductive kick from a transformer attached to a switch.
Although inductive spikes are not harmful to users, they increase the likelihood that a GFCI will be more susceptible to nuisance trips if no arc suppression is used.
Only the Hayward GLX-HAL-XSNUB has been tested and UL recognized for this application.
This item is now included with the following Hayward Low Voltage transformers:
LTBUY11H70
LTBUY11H14
LTBUY11300
NOTE: As of June 29, 2015, UL has issued major revisions to UL943, the standard for GFCI safety.
These changes now require GFCI breakers to “auto-monitor” or “self-test” the ability of the GFCI to respond to a ground fault.
Due to these recent changes, breakers could be more susceptible to nuisance tripping.
If you are experiencing this issue please read the following information.
Symptom
• An isolated transformer for low volt lighting is installed.
• Turning the light(s) OFF or ON/OFF either via light switch or relay causes a GFCI breaker to trip, even on an unrelated circuit.
Cause
• The inductive kick of an isolation transformer causes a brief arc across the switch contacts which injects arc noise into the supply wiring.
This brief noise feeds back to the panel and to all the installed breakers.
The circuitry inside the GFCI breaker may react to the arc noise and trip, even though there is no ground fault current present.
Approved Solution
• Connection of a Hayward GLX-HAL-XSNUB snubber capacitor (arc suppressor) across the primary leads (line to neutral) of the transformer on the load side of the light switch or relay.
What does a Snubber do?
A snubber is a plastic-film high voltage capacitor that will suppress (“snub”) the voltage spikes in electrical systems such as the inductive kick from a transformer attached to a switch.
Although inductive spikes are not harmful to users, they increase the likelihood that a GFCI will be more susceptible to nuisance trips if no arc suppression is used.
Only the Hayward GLX-HAL-XSNUB has been tested and UL recognized for this application.
This item is now included with the following Hayward Low Voltage transformers:
LTBUY11H70
LTBUY11H14
LTBUY11300
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