Okay, let's break down the SJTW vs. SJOW cable choices for a pool pump and why you might see both.

Understanding the Codes SJ - Denotes a 300-volt cord T - Thermoplastic insulation O - Oil resistant outer jacket W - Weather and Water resistance.

Why You See Both

Both SJTW and SJOW cables are common for outdoor use, and pool environments are certainly considered outdoor and wet.

Here's a breakdown of the pros and cons to consider for your Pool Pump



SJTW



Pros

Generally less expensive. Weather/water resistant is usually sufficient for many outdoor applications.

Cons

The thermoplastic insulation isn't as robust against oil and chemical exposure as SJOW.

SJOW



Pros

Oil-resistant jacket offers better protection against chemicals (chlorine, algaecides, etc.) that can spill or be present around pool equipment. The jacket is more durable than SJTW.

Cons

Usually a bit more expensive than SJTW.

Which is Best for a Pool Pump?SJOW is the better choice for a pool pump. Chemical Exposure

Pool areas often have chemical spills (chlorine, algaecides, etc.). The oil-resistant jacket of SJOW provides added protection against these chemicals degrading the cable over time.

Longevity

The more robust jacket of the SJOW cable will likely last longer in the harsh environment around a pool.

Safety

Degradation of the cable due to chemical exposure can lead to shorts or other electrical hazards. SJOW provides an extra margin of safety.

Important Considerations



Local Codes



Always check your local electrical codes and regulations. Some jurisdictions might have specific requirements for pool pump wiring. Professional Installation

You mentioned that the pool company does the motor work after the electrical outlet is installed. They are usually familiar with local codes, so consult with them for their recommendations.

Grounding

Ensure proper grounding is in place as well. This is critical for pool safety.

In Summary

While SJTW might work, SJOW is the more durable and safer choice for a pool pump due to its oil/chemical resistance. It's worth the slightly higher cost for the added protection and longevity. Check with your local codes and consult with the pool company doing the installation for their recommendations.

Disclaimer: I am an AI Chatbot and not a qualified electrician. Always consult with a licensed electrician for electrical work and to ensure compliance with local codes. Flag for review