Underwater pool and spa lights run at 12 V, and the transformer feeding them must be built for it. The Intermatic PX100 is a 100 W pool and spa safety transformer with a grounded shield between the primary and secondary windings, built-in overload protection and 12, 13 and 14 V output taps to make up for cable length. It lives in a beige, Type 3R steel enclosure with mounting brackets top and bottom.
Why pool electricians pick it
- Grounded shield between primary and secondary windings; suitable for direct connection to underwater pool and spa lights.
- Built-in circuit protection disconnects power if the transformer is overloaded or faulted.
- 12, 13 and 14 V AC taps let you compensate for voltage drop on long cable runs.
- Type 3R steel enclosure with ten 1/2-3/4 in combination knockouts.
- UL listed as a swimming pool transformer, with cCSAus shown on Intermatic's technical data.
Specifications
| Spec |
Detail |
| Brand |
Intermatic |
| Model |
PX100 |
| Type |
Pool and spa safety transformer |
| Input |
120 V AC, 1 A, 60 Hz |
| Output |
12, 13 or 14 V AC, 100 W |
| Enclosure |
Type 3R corrosion-resistant painted steel, beige |
| Dimensions (H x W x D) |
7-1/4 x 5-1/4 x 4-1/2 in |
| Knockouts |
10 combination 1/2-3/4 in (4 bottom, 2 each side, 2 back) |
| Certification |
UL swimming pool transformer; cCSAus (Intermatic technical data) |
| Warranty |
1-year limited |
Pro tip from the counter
Choose the output tap from Intermatic's cable-length chart, not by guesswork. The manual calls for 12 V plus or minus 0.3 V at the lamp, and it warns that more than 12.3 V at the light can make the internal protection cycle the transformer off and on.
Best for: underwater pool and spa light circuits, pool builders and service electricians, hot tub lighting, replacing failed pool light transformers
Downloads: Installation manual (PDF) · Technical data (PDF)
Ships Canada-wide from Vaughan, ON. Pool contractors can get trade pricing through a quote or at (905) 553-7171.