Pool automation controls are usually located outdoors, often on an exterior wall near the pool pump and equipment. A 240V power circuit runs from the home's main electrical service to the control panel. That long cable may be exposed to surge energy whether it runs underground or through an attic, even when the main electrical panel has surge protection.

Surge protection starts at the main electrical panel with a quality lightning arrester. Kenick's white paper recommends a second layer of protection at the pool control panel and identifies the T1SPD as a suitable option for this application.

T1SPD Installation Overview

Important safety note: The original guide instructs the installer to turn off power to the controls at the main before opening the control panel. Electrical work should be performed by a qualified, licensed electrician following applicable safety requirements. Do not work inside energized equipment.

1. Turn off power and open the control panel

First turn off power to the pool controls at the main. Then remove the cover from the control panel.

2. Choose the breaker connection points

Locate a pair of breakers that are convenient for connecting the T1SPD's black wires. The guide states that a 240V breaker may be used, or two adjacent 120V breakers, so both phases of the 240V circuit are protected.

3. Locate a knockout and mount the T1SPD

Locate a ¾-inch knockout in the control panel and open it. Insert the T1SPD through the knockout hole, then install the nut and washer. Tighten by hand. Do not overtighten, as this may damage the T1SPD's plastic threads.

Position the unit so its LED can be easily seen.

4. Connect the wires

Connect the T1SPD's green wire to the panel's ground bus and connect each black wire to the selected circuit breaker connection points.

The original guide notes that two wires should not be placed under one breaker lug unless the lug is designed for that purpose. It describes removing the existing wire from the breaker and using a short length of the same gauge wire, then connecting the existing wire and the T1SPD lead to that short wire with a wire connector. The guide notes that this wiring arrangement is not shown in its illustration.

5. Check the installation and restore power

The guide illustrates the T1SPD green wire connected to the bare aluminum ground bus and the black wires connected to the poles of a 240V breaker. It notes that the T1SPD is operational only while that breaker is ON.

After the control panel cover is reinstalled, turn on the main breaker supplying the pool controls. The guide states that a green light should be visible on the T1SPD when power is on; the light will appear brighter at night and less bright during daylight.