You're right to be concerned. This is a dangerous situation. Let's break down the issues and how to address them, both immediately and for the long-term.

The Immediate Danger

The lack of a proper grounding and bonding system, combined with a potentially compromised ground conductor and metallic pool ladders, creates a significant risk of electric shock, potentially fatal. The fact that the patio lights aren't working is a big red flag indicating a ground fault or loss of neutral is likely.

Immediate Actions (Before New Service)1. Your plan is good, implement it. Drive the ground rod. Connect a properly sized ground wire from the ground rod to the pool panel ground bar AND the pump motor housing.2. GFCI Protection

Replacing the pump breaker with a GFCI breaker is mandatory. This will provide essential protection against ground faults. Even if the grounding is compromised, a GFCI will often detect a fault current and trip, potentially saving lives.3.

Repair or Replace the Feeder

This is critical. You absolutely must have a properly sized, intact ground conductor running back to the feeding panel in the motel.

Ground Bar

Adding a ground bar to the pool panel is a good idea, even temporarily.

Neutral

Since you plan to add a ground bar, add a neutral. This is for the patio lights which seem to be inoperative.

Inspect Thoroughly

Check the feeder cable for damage, corrosion, or loose connections at both ends. If it's old or questionable, replace it entirely.

Test the Ground

After making the connection, test the resistance between the ground bar at the pool panel and a known good ground (like the ground bar at the motel panel). It should be very low (ideally less than 1 ohm). A high resistance reading indicates a poor connection or a broken ground conductor.4.

Ladders and Other Metal Parts

Temporarily, the best you can do is to try to insulate the metal ladder and railings with non-conductive material, but this doesn't solve the lack of bonding.5.

Lockout/Tagout

Once you've made these temporary repairs, test them thoroughly. If everything seems functional and safe, and you're absolutely certain the grounding is improved, keep the power locked out/tagged out until the new service is installed and a proper bonding system is in place.

Long-Term Solution (With New Service)1. New Service Installation

This is the foundation. Ensure the new service is installed to current code requirements, including a properly sized grounding electrode system (ground rods, ground ring, or concrete-encased electrode, as applicable).2.

Proper Bonding (Crucial)

This is where the real safety lies. A bonding loop is absolutely essential. This means connecting all metallic parts of the pool system to a common bonding grid. This includes:

Pool Reinforcing Steel (Rebar)

If present, bond it in at least four points, uniformly spaced around the perimeter. If you can't access the rebar, you'll need to explore alternatives, which are addressed below.

Metal Ladders, Handrails, and Diving Boards

Bond these directly to the bonding grid.

Pump Motor Housing

Bond to the bonding grid.

Metal Conduit or Raceways

Bond any metal conduit or raceways containing electrical conductors.

Any Other Metal Parts

Anything within reach of a person in the pool or on the pool deck.3.

Bonding Loop Conductor Size

Use a solid copper conductor, sized according to the NEC (typically #8 AWG, but check your local codes).4.

Equipotential Plane (Important for Existing Pools)

If you cannot prove the rebar is present or accessible, the NEC (specifically 680.26(B)(2)(b)) requires an equipotential bonding grid to be installed under the perimeter surface of the pool. This essentially creates a safety zone around the pool to minimize voltage differences. This requires a qualified professional experienced in this type of installation.
5.

GFCI Protection

GFCI protection is required for all electrical equipment associated with the pool, including receptacles, lighting, and the pump motor.6.

Subpanel and Feeder

Ensure the subpanel is properly grounded and bonded at the new service. Run a four-wire feeder (hot-hot-neutral-ground) to the subpanel at the pool.7.

Inspection

Have the entire installation inspected by a qualified electrical inspector to ensure compliance with all applicable codes and regulations.

Dealing with Unknown Rebar

If you can't find rebar, consider these options, in order of preference: Ground Penetrating Radar (GPR)

A GPR survey can locate rebar without destructive methods. This is the ideal solution if you suspect rebar is present but can't access it.

Core Drilling

You can core drill into the pool shell in multiple locations to try to locate rebar. This is destructive but can be effective.

Equipotential Bonding Grid (NEC 680.26(B)(2)(b))

This is your default if you can't verify rebar. It involves creating a buried bonding grid around the pool perimeter. This requires excavation and proper installation by a qualified electrician. This is a very important detail.

Important Considerations



Qualified Electrician

This work must be performed by a licensed and qualified electrician with experience in pool electrical systems. This is not a DIY project.

Permits and Inspections

Obtain all necessary permits and inspections from your local authorities.

Code Compliance

Strictly adhere to the National Electrical Code (NEC) and all applicable local codes.

Documentation

Keep detailed records of all work performed, including wiring diagrams, test results, and inspection reports.*

Training

Ensure anyone who operates or maintains the pool equipment is properly trained on electrical safety.

Safety is Paramount:

Never compromise on safety when dealing with pool electrical systems. The risks of electric shock and electrocution are very real. If you have any doubts or concerns, consult with a qualified electrical engineer or inspector.This is a complex project. Take the time to do it right, and prioritize safety above all else. Flag for review