The electrical sub is responsible for hooking up all the electrical connections and components necessary to operate all the pool equipment (pumps, heaters, pool/spa lights, electronic-based chlorinators, equipment controllers/timers) and any other auxiliary electrical components you may want (extra lights, outdoor outlets, switches, controllers). They are also responsible for insuring that the installed electrical components meet the minimum safety requirements of the National Electrical Code (NEC) standard and whatever other local requirements

A trained electrician will install your lighting option and pre-wire your control panel to your pool pump. Final electrical connections are not completed until just prior to your final inspection. You must use a licensed electrical contractor for this phase. Electric and water do not mix and the use of a professional is a MUST. You may secure a copy of the National Electrical Code Article 680 that covers swimming pools at the local library or via the Internet. All pools must be grounded including all steel within 5 feet of the pool. Underwater lights must be installed with Ground Fault Interrupters (GFI). These breakers protect from shorts in underwater lighting. The latest in pool lighting is Fiber Optics. Fiber Optics add safe and beautiful accents to the pool so you may want to research this feature.

The bare minimum electrical rough work should be done for passing pre-Gunite inspection is:
Install pool and spa light wells and bond metal to pool chassis.
Install empty sub-panel at main electrical service panel
Install all underground runs:
1" conduit from main service panel all the way to the equipment area
1/2" brass runs from pool and spa lights all the way back to the equipment.
Run 1/2" PVC from equipment area to spa for Jandy 4-button spa-side remote
Bond all metal within 5 feet horizontal or 12 feet vertical of waters edge to the pool steel (per NEC standard)