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Thread: Solid vs Stranded Wire

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    kevreh's Avatar
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    Solid vs Stranded Wire

    In short, please use stranded. Over the years I've upgraded my pool pad with new equipment. When I run new wire going from solid wire (more stiff) to stranded (more flexible) it makes it easier to work with.

    Just saw damage done to a pump using solid wire. The plastic plate with the brass contacts where the wire's are screwed onto cracked, letting the Hot come lose and lay against the ground. Checking the screws they became stripped from trying to tighten the solid wires. Also moving the pump around doesn't help since solid wires have no give where they connect to the pump (and other devices). Symptom was the circuit breaker kept tripping and pump wouldn't work. The pump was the last thing I checked (after tearing into my suntouch controller).

    Another benefit to stranded is you can (and probably should, at least with devices that vibrate like pumps) crimp on ring or spade terminals. This is an improvement over screwing the wire directly onto the wire terminals.

    If you're upgrading you electrical or adding a new piece of equipment take this into consideration.
    16x32 Concrete IG
    Equipment: Carvin 525sf Cartridge Filter, Jandy Gas Heater, Vortex Solar Panels w/solar valve, 1hp Hayward Pump with 3/4 HP AO Smith 2 Speed Replacement Motor, Aquarite Saltwater Cell, Polaris 280 Dolphin Active 20 Robot
    Automation: Hayward Prologic Controller

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    Re: Solid vs Stranded Wire

    The pumps have mounting ears such that they can be mounted to the pad. This keeps them from moving and damaging the wiring or the plumbing.
    Erik

    20k gallons, IG (Fiberglass), T-40 Sand Filter(38 GPM),Hayward Superpump w/1 HP motor, Solaxx Harmony (combo cleaner/SWG).

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    Isaac-1's Avatar
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    Re: Solid vs Stranded Wire

    MTW rated stranded wire should always be used around motors and equipment where there is vibration
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    JasonLion's Avatar
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    Re: Solid vs Stranded Wire

    Except for bonding wire, which needs to be #8 solid copper.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Solid vs Stranded Wire

    Quote Originally Posted by JasonLion
    Except for bonding wire, which needs to be #8 solid copper.
    Good point, of course. Since its external (to conduit, boxes, equipment) this is no problem to work with.
    16x32 Concrete IG
    Equipment: Carvin 525sf Cartridge Filter, Jandy Gas Heater, Vortex Solar Panels w/solar valve, 1hp Hayward Pump with 3/4 HP AO Smith 2 Speed Replacement Motor, Aquarite Saltwater Cell, Polaris 280 Dolphin Active 20 Robot
    Automation: Hayward Prologic Controller

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