Does the PX100 only generate 12v dc? (My wire length requires 14v dc.)

The output of the PX100 is ***AC***, not DC - this is an isolation transformer, not a (DC) power supply. As noted, there are multiple output taps that allow you to select 12-14VAC output.

Will this work with a 300-watt pool bulb

It is only rated for 100 watts so you cannot run 300 watts with it.

can I use a regular switch to to turn transformer on,for pool light

You may use a residential type wall switch connected to interrupt the primary of the transformer. Wiring methods must conform to the National Electric Code. The load through the switch is less than 1 ampere at the maximum rating of the transformer, but the switch must be rated for no less than the line voltage (120 volts).

Px100 | Desertcart Mauritius

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Description

💡 Illuminate your nights with power, safety, and style!

SAFETY FIRST ALWAYS - Grounded shield and built-in circuit protection ensure safe, code-compliant operation around water.
CUSTOM VOLTAGE CONTROL - Choose between 12, 13, or 14 volts to optimize performance for long cable runs and varied lighting setups.
WHISPER QUIET OPERATION - Engineered to minimize noise so your poolside ambiance stays serene and uninterrupted.
RUGGED READY FOR OUTDOORS - Durable 3R beige metal enclosure with multiple knockouts for flexible, secure installation.
POWER YOUR POOL LIGHTS LIKE A PRO - Delivers a robust 100 watts to keep your pool and spa lighting vibrant and reliable.

The Intermatic PX100 is a 100-watt low-voltage safety transformer designed specifically for pool, spa, and outdoor garden lighting. It offers selectable 12, 13, or 14-volt outputs to accommodate long wiring runs and various lighting needs. Featuring a grounded shield between primary and secondary windings and built-in circuit protection, it ensures safe, code-compliant operation. Housed in a durable beige metal enclosure with multiple knockouts, it’s easy to install and built to withstand outdoor conditions while operating quietly.

Specifications

ASIN	B003M60V4O
Best Sellers Rank	#56,819 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #47 in Outdoor Low Voltage Transformers
Brand Name	Intermatic
Current Rating	1 A
Customer Reviews	4.5 4.5 out of 5 stars (332)
Global Trade Identification Number	00078275024090
Included Components	Intermatic Px100 Pool Light 100-Watt Safety Transformer, Beige
Item Dimensions D x W x H	4.5"D x 5.25"W x 7.25"H
Item Highlight	Low-Voltage Safety Transformer for Pool and Spa Lighting, Reliable, Code-Compliant Transformer for Submersible Lighting
Item Type Name	Pool Transformer
Item Weight	6.5 pounds
Manufacturer	Intermatic
Maximum Frequency	60 hertz
Minimum Frequency	60 hertz
Model	PX100
Mounting Type	None" or "General Purpose Mount
Number of Items	1
Part Number	PX100
Power Source	Corded Electric
Specification Met	Nec
UPC	043968898982 078275024090 852673886357
Unit Count	1 Count
Warranty Description	1-Year limited

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