Sealproof Power Whip Assembly, 1/2-Inch x 6 Ft Nonmetallic Liquid Tight Flexible Electrical Conduit and 10 Gauge Wire Single Phase Preassembled A/C Hook-up Whip Kit, 1/2"

What I used and why

For recent outdoor HVAC and equipment hookups, I’ve been reaching for a simple, preassembled solution: a 6-foot, 1/2-inch nonmetallic liquid-tight whip from Sealproof. It’s a straightforward kit—a length of flexible liquid-tight conduit with three 10 AWG conductors already pulled and UL-listed components—meant for single-phase connections like air conditioners, heat pumps, pumps, and similar loads. If you’ve ever built a whip from scratch (cut conduit, add fittings, pull conductors, weatherproof the terminations), you know how much time a factory-assembled option can save, especially on repetitive installs or when working in tight spots.

Setup and installation experience

I used the whip to connect a condenser to a non-fused disconnect, with a run right at 5 feet between enclosures. The preassembled approach paid off immediately: I mounted the disconnect, marked my knockout locations, and landed the whip ends using the included liquid-tight fittings. The flexible conduit bent cleanly without kinking, and the 6-foot length offered just enough slack for a gentle sweep rather than a sharp bend into the equipment. I still secured it within a foot of the enclosures and at reasonable intervals, per code requirements for LFNC, and made a small drip loop to discourage water ingress.

Inside, the conductors were clearly sized at 10 AWG, copper, and stranded—what I expect for a 30-amp class hookup on a typical 240V single-phase load that doesn’t need a neutral. Stranded wire is the right call in a whip: it handles vibration well, takes corners without memory, and reduces stress on terminations. If your equipment uses screw-clamp terminals that feel happier with a solid conductor, you can use properly sized fork/spade lugs or ferrules to give clean, positive contact. Either way, torque to the manufacturer’s spec and you’re set.

A few practical notes from the install:
- Check the equipment’s nameplate before you buy. Many condensers and small heat pumps are 25–30 amps MCA and fine on 10 AWG copper, but some outliers need larger conductors. This whip is fixed at 10 AWG, so it’s not a catch-all.
- Six feet is a great working length between a disconnect and the equipment, and it’s also a common maximum for this application. If you need to go longer, you’re usually better off running conduit and pulling your own THHN/THWN conductors.
- If your equipment needs a neutral in addition to two hots and a ground, verify conductor count before installation. This whip is intended for standard single-phase hookups that don’t require a neutral.

Overall, the installation was genuinely quick—no fish tape, no fighting tight radiuses, and no hunting for the right fittings.

Flexibility, bend radius, and vibration

Nonmetallic liquid-tight conduit shines in outdoor equipment connections because it allows the unit to move slightly on its pad without transmitting vibration back into rigid raceways. This whip handled the bend out of the disconnect and into the condenser with a comfortable radius and no tendency to flatten. It also stays put where you set it, which is useful when you need a clean route around an obstruction or want a tidy sweep into the knockout.

Because this is a nonmetallic assembly, equipment grounding relies on the included copper equipment grounding conductor rather than the conduit body. That’s standard practice with LFNC and, in my experience, leads to more predictable grounding continuity over the long term.

Outdoor durability and weather resistance

This is where the whip’s specification matters. The components are UL-listed, the conduit is rated for outdoor use, and it’s resistant to oil, water, and sunlight. That checks the boxes for a service area that sees rain, sprinkler overspray, and long sun exposure. The fittings seat well and tighten down smoothly for a watertight seal at the cabinets. I also appreciate that nonmetallic conduit doesn’t corrode; on coastal or high-humidity jobs where metal fittings start looking rough in a season, this type of assembly holds up well.

As always, the sealing is only as good as the surfaces you install into. Use the right knockout sizes, tighten locknuts fully, and avoid deforming thin sheet metal. A quick pass with an outdoor-rated sealant around the knockout is optional but can help where sheet metal tolerances are sloppy.

Performance across common applications

• HVAC condensers and heat pumps: The whip feels purpose-built for these. The 6-foot length is spot on, and 10 AWG covers the most common amperage range for residential units on 240V. I like that I can form a smooth sweep without a bulky loop.
• Pool and spa pumps: Outdoors and near moisture is squarely in the whip’s wheelhouse. Make sure your equipment grounding and bonding are correct for the pool environment and that your breaker and GFCI requirements are met.
• Motors and controls: For standalone motors or packaged equipment, this is a neat way to bridge from a junction box or disconnect to the device while maintaining liquid-tight integrity.
• Outdoor lighting and solar balance-of-system: It works, but be mindful of conductor size and count. For many lighting circuits, 10 AWG is overkill, and for some solar components, you might need additional conductors.

Build quality and details

The conduit wall has a consistent feel—pliable yet not flimsy—and the fittings seat and thread cleanly. The conductors strip without strand breakage, and the insulation holds up under torque. I didn’t have issues with jacket memory or flattening, which can happen with lower-grade flexible conduit. The overall impression is that it’s ready to live outdoors without fuss.

If you plan to shorten it, know that cutting a preassembled whip means you’ll need to add a new liquid-tight fitting to the cut end and re-terminate. For most jobs, I’d rather route the extra foot as a gentle loop than cut it down. If you know you’ll consistently need 3–4 feet, buying bulk conduit and assembling your own can make sense.

What I’d improve

• Options for length and conductor count: A family of the same whip in 4, 6, and 8 feet—and in both 10/3 and 10/4—would cover more equipment scenarios without forcing on-site modifications.
• Clear labeling of conductor function: Color coding is typically obvious, but a tag indicating “single-phase, no neutral assumed” would reduce confusion for helpers or less experienced installers.

Neither of these is a deal-breaker; they’re more about smoothing logistics on busy days.

Safety and code reminders

• De-energize and lock out before working.
• Verify breaker size, conductor rating, and equipment MCA/Max Fuse as listed on the nameplate.
• Re-identify conductors as required by your local code, and use listed connectors and terminations compatible with stranded copper.
• Secure the whip per code (usually within 12 inches of enclosures and at proper intervals) and form drip loops outdoors.
• Torque terminal screws to spec; stranded conductors benefit from proper lugs or ferrules where applicable.

Who it’s for

• Pros who want a fast, predictable way to finish outdoor equipment hookups without assembling a whip every time.
• DIYers who are comfortable and code-aware around 240V circuits and want a clean, weather-ready connection without buying conduit, fittings, and wire separately.

If you’re frequently wiring higher-amp equipment or devices that require a neutral, you may outgrow this specific configuration and be better served by building custom assemblies.

Final recommendation

I recommend this Sealproof whip. It’s a dependable, time-saving way to make liquid-tight, outdoor-rated single-phase connections for condensers, heat pumps, pumps, and similar gear. The combination of UL-listed components, flexible nonmetallic conduit, and stranded 10 AWG conductors strikes the right balance between durability and ease of installation. It holds up outdoors, terminates cleanly, and fits the 6-foot sweet spot most of these installs need. While it won’t cover every scenario—and you’ll still want to confirm conductor count and breaker sizing—it’s an efficient, well-built solution for the majority of residential and light commercial equipment hookups.