Globrite Transformer Wiring

[bsperduto]

Hi,

While working inside my high voltage load center today my globrite transformer unfortunately came loose and ripped its connections out. I'm trying to piece it back together but like an idiot I forgot to take a picture before I started working so I'm not sure of the proper wiring. The transformer is a 119T340 connected to 3 globrites. I've attached some pictures of how I thought it should be connected but there's quite a few more wires than I expect.

What I did was connect the black line wire to the circuit load connection coming from the easytouch which starts on the load side of a gfci. I took the 2 black wires from the other side of the transformer and twisted them with all 3 of the globrite black wires. I then connected the 3 globrite whites to one side of that complicated pigtail they did which ties it to the white from the transformer. I connected the other end of that pigtail to the gfci.

When I threw the breaker back on all I heard was a fairly loud hum with the lights circuit on although they don't actually come on. The gfci also seems to indicate a fault of some sort (yellow light).

Anyone have any idea what I did wrong or if the fall might have broken the transformer?

 

[ajw22]

That light transformer installed in the high voltage area of the EasyTouch is an unsafe hack. That is not standard Pentair and does not meet the NEC safety standards for a pool transformer.

The NEC requires isolation between the 120V wiring and the 12V wiring so that if a wire came loose it could not feed 120V into the pool.

Pentair, Intermatic, and others make pool light transformers that follow NEC 680.23(A)(2).

Pentair 300 Watt 12v Transformer 619963 | Pool Supply 4 Less

These Pentair 619963 Safety Transformers are specifically designed to supply 12 volts to pool or spa lights, submersible fixtures and outdoor garden lights.

www.poolsupply4less.com

That hack should be removed and the correct external transformer used.

 

[JamesW]

 

[JamesW]

It is the same transformer that comes in the Intermatic 300 Watt Transformer - PX300.

There are two black output wires that will be 12 volts AC, 13 volts AC or 14 volts AC depending on the input wiring.

The white goes to neutral.

The hot wire goes to black, blue or yellow depending on what output voltage you want.

Hot to primary black = 12 volt output on secondary.

Hot to primary yellow = 13 volt output on secondary.

Hot to primary blue = 14 volt output on secondary.

 

[JamesW]

 

[ajw22]

The transformer outside of this cabinet no longer meets NEC 680.23(A)(2) without the bottom separation between the high voltage and low voltage wiring.

 

[JamesW]

You can have a pool light transformer in a load center if the load center is designed for the pool light transformer.

The low voltage section has to be separate from the high voltage section.

Your installation does not look correct.

You should get the proper enclosure and do it right.

https://dtrermj9469s.cloudfront.net/userfiles/images/inriver/original/9795_pe30000t3%20door%20label%20instructions.pdf

https://dtrermj9469s.cloudfront.net/userfiles/images/inriver/original/9070_pe30000t3%20instructions%20en.pdf

https://www.intermatic.com/Product/PE30000T3

https://dtrermj9469s.cloudfront.net/userfiles/images/inriver/original/9162_t10004rt3%20instructions%20en.pdf

 

[JamesW]

Maybe you can buy just the enclosure or maybe you will have to buy a new transformer.

You cannot just stick a pool light transformer into a load center unless the load center is specifically designed to have a pool light transformer installed.

 

[bsperduto]

Makes sense, I'll just go ahead and redo it the right way rather than figure out what they were trying to do. Pool builder installed it this way

 

[JamesW]

680.23 Underwater Luminaires

(2) Transformers and Power Supplies

Transformers and power supplies used for the supply of underwater luminaires, together with the transformer or power supply enclosure, shall be listed, labeled, and identified for swimming pool and spa use.

The transformer or power supply shall incorporate either a transformer of the isolated winding type, with an ungrounded secondary that has a grounded metal barrier between the primary and secondary windings, or one that incorporates an approved system of double insulation between the primary and secondary windings.

The Standard is UL379 and it can be “Listed” by any NRTL (Nationally Recognized Testing Laboratory).

 

[JamesW]

https://hayward.com/media/wysiwyg/pdf/lighting/jnj_product_guide_NOV-2022.pdf