Intermatic PX100, PX100S, PX300, PX300S Installation Manual

INSTALLATION

PX SERIES LOW VOLTAGE
LANDSCAPE AND SWIMMING
POOL/SPA LIGHT TRANSFORMERS

OPERATION &

SERVICE MANUAL

Model: PX100 and PX100S - 100 W Transformers

INPUT: 120 VAC, OUTPUT: 12 VAC or 13 VAC

Model: PX300 and PX300S - 300 W Transformers

INPUT: 120 VAC, OUTPUT: 12 VAC, 13 VAC or 14 VAC

Suitable for direct connection to underwater lights and for Indoor/Outdoor installations except in CANADA - Low
Voltage Landscape Lighting installation - Outdoor only.

Read and follow the safety instructions listed below and other basic safety precautions before installation or
operation of this transformer and other associated equipment.

WARNING Risk of Fire or Electrical Shock

• If installation involves running wire through a building structure, special wiring methods are needed.

• Do Not submerge transformer.

• Do Not exceed the maximum ratings of individual components, wiring devices, and current carrying capacity of conductors.

• Select cable for each secondary output in accordance with tables in this manual.

• Select power source by combining bulb wattage.

• For landscape lighting appliances, low voltage cable shall be buried a maximum of 6 inches (15.2 cm) in order to connect to the
main low voltage cable.

GENERAL INFORMATION

These Safety Transformers are specifically designed to
supply 12 volts to pool/spa lights, submersible fixtures
and outdoor garden lights. The built-in circuit protection will
disconnect power to the transformer in case of defect or
overload. These transformers are suitable for direct
connection to underwater Pool and Spa lights.

SPECIFICATIONS
Enclosure Size: 7 1/4” (19.4 cm) high x 5 1/4” (13.3 cm) wide

x 4 1/2” (11.4 cm) deep. Mounting brackets top and bottom.
Enclosure Type: (A) 0.048” corrosion resistant steel with
electrostatically applied beige coating. (B) 0.036” stainless
steel.
Knockouts: Total of ten 1/2”-3/4” combination.
(4) bottom, (2) right side, (2) left side, (2) back.

Model Input Secondary Output Enclosure

PX100 120 VAC 1 A Max. 100 Max. 12 or 13 A
PX100S 120 VAC 1 A Max. 100 Max. 12 or 13 B
PX300 120 VAC 3 A Max. 300 Max. 12, 13 or 14 A
PX300S 120 VAC 3 A Max. 300 Max. 12, 13 or 14 B

* Any combination of bulbs, any tap.

60 Hz.

Lamp Watts(W)* Voltage (VAC)

Type

1

Pool/Spa Underwater Lighting Application

INSTALLATION
For field wiring information, please refer to the instructions attached to inside of front cover.

• Make sure that all unused taps (leads) are separately insulated.

• Use the following tables as a guide to determine the correct wire size.

• The voltage at lamp terminals after installation should be 12 ± 0.3 VAC.

• Voltages above 12.3 VAC at the light may cause the internal safety fuse of the transformer to
switch off and on. To prevent this from happening follow chart below for correct voltage and
wire gauge selection.

1. Select power source by combining Bulb wattage.

2. Determine length of cable run(s).

3. Determine wire gauge needed to deliver necessary power.

4. Connect cable to output tap of transformer given in table.

120 VAC Primary Input - 100 W Output 120 VAC Primary Input - 300 W Output

Distance* 2#6AWG 2#8AWG 2#10AWG 2#12AWG 2#14AWG
Feet

5 ft. 12 VAC 12 VAC 12 VAC 12 VAC 12 VAC
30 ft. 12 VAC 12 VAC 12 VAC 13 VAC 13 VAC
60 ft. 12 VAC 12 VAC 13 VAC 13 VAC
90 ft. 12 VAC 13 VAC 13 VAC
120 ft. 13 VAC 13 VAC
150 ft. 13 VAC 13 VAC
180 ft. 13 VAC
210 ft. 13 VAC
240 ft. 13 VAC

* Length of run to light from transformer.

Distance* 2#6AWG 2#8AWG 2#10AWG 2#12AWG
Feet

5 ft. 12 VAC 12 VAC 12 VAC 12 VAC
10 ft. 12 VAC 12 VAC 12 VAC 13 VAC
20 ft. 12 VAC 12 VAC 13 VAC 13 VAC
30 ft. 12 VAC 13 VAC 13 VAC 14 VAC
40 ft. 13 VAC 13 VAC 14 VAC
50 ft. 13 VAC 13 VAC 14 VAC
60 ft. 13 VAC 14 VAC
70 ft. 13 VAC 14 VAC
80 ft. 13 VAC 14 VAC
90 ft. 14 VAC
100 ft. 14 VAC
110 ft. 14 VAC

* Length of run to light from transformer.

LANDSCAPE LIGHTING APPLICATIONS

• Use only CSA or UL certified low-voltage cable.

• Low voltage cable shall be buried a maximum 6
inches (15.2 cm) in order to connect to the main low
voltage cable.

LIMITED ONE-YEAR WARRANTY

If within the warranty period specified, this product fails due to a defect in material or workmanship, Intermatic Incorporated will repair or replace it, at its sole option, free of charge.
This warranty is extended to the original household purchaser only and is not transferable. This warranty does not apply to: (a) damage to units caused by accident, dropping or abuse
in handling, acts of God or any negligent use; (b) units which have been subject to unauthorized repair, opened, taken apart or otherwise modified; (c) units not used in accordance
with instructions; (d) damages exceeding the cost of the product; (e) sealed lamps and/or lamp bulbs, LED’s and batteries; (f) the finish on any portion of the product, such as surface
and/or weathering, as this is considered normal wear and tear; (g) transit damage, initial installation costs, removal costs, or reinstallation costs.

INTERMATIC INCORPORATED WILL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS OR
IMPLIED WARRANTIES. ALL IMPLIED WARRANTIES, INCLUDING THE WARRANTY OF MERCHANTABILITY AND THE WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE,
ARE HEREBY MODIFIED TO EXIST ONLY AS CONTAINED IN THIS LIMITED WARRANTY, AND SHALL BE OF THE SAME DURATION AS THE WARRANTY PERIOD STATED ABOVE.
SOME STATES DO NOT ALLOW LIMITATIONS ON THE DURATION OF AN IMPLIED WARRANTY, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

This warranty service is available by either (a) returning the product to the dealer from whom the unit was purchased or (b) completing a warranty claim online at www.
intermatic.com. This warranty is made by: Intermatic Incorporated, Customer Service 7777 Winn Rd., Spring Grove, Illinois 60081-9698. For warranty service go to: http://www.
Intermatic.com or call 815-675-7000.

Because of our commitment to continuing research and improvements, Intermatic Incorporated reserves the right to make changes, without notice, in the specifications and material
contained herein and shall not be responsible for any damages, direct or consequential, caused by reliance on the material presented.

INTERMATIC INCORPORATED, SPRING GROVE, IL 60081-9698

http://www.intermatic.com

2

Transformer Wattage (W) Minimum Gauge AWG

300 12

100 16-14-12