Southwire 49273643 18/7 Multi-Conductor Sprinkler Wire 100 Ft Review

A 100 ft spool of 18/7 multi-conductor sprinkler wire for compatible outdoor irrigation controller and valve routes.

Seller pricing varies Updated May 25, 2026

Bottom line

The Southwire 49273643 spool gives compatible irrigation layouts a 100 ft supply of 18/7 sprinkler wire for controller and valve routes.

Southwire 49273643 18/7 multi-conductor sprinkler wire 100 ft spool

What this review covers

This review looks at the 18/7 conductor format, 100 ft spool length, outdoor sprinkler-wire role, and station-record routine.

The upside

  • The 18/7 format gives compatible sprinkler systems seven conductors in one outdoor wire spool.
  • The 100 ft length supports planned controller-to-valve routes around a backyard layout.
  • The conductor count is easy to record beside station names and valve labels.

The tradeoffs

  • The route, conductor count, controller layout, and local code expectations should be checked before ordering.
  • Long or buried wire paths deserve careful tracing before existing wires are changed.

Fit and feel

What to know:

Confirm the controller layout, conductor count, route length, burial method, splice protection, and local requirements before use.

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Full review

A seven-conductor wire spool for planned irrigation routes

The Southwire 49273643 is a 100 ft spool of 18/7 multi-conductor sprinkler wire. It belongs with compatible outdoor irrigation controller and valve routes that call for seven conductors in one jacket.

Seven conductors can support a common wire and six station paths when the system design calls for that layout. Keep the wire-color record close to the controller schedule and valve-box labels.

Make the station list first

Wire routing feels clear when the station list is already written. Name the yard routes, confirm the controller terminals, and check the valve box before the spool comes out.

Outdoor splices should use rated connectors and reachable service points. A qualified irrigation or electrical professional can trace buried or mixed wiring when the path is unclear.

Store the label with leftover wire

After the project, keep the product label with the remaining spool. Mark the gauge, conductor count, date, and route served by the wire.

That small record helps the next controller check line up with the valve station and the yard route.

Where it fits

Choose this spool for compatible sprinkler systems that call for 18/7 outdoor multi-conductor irrigation wire.

What to know

Confirm the controller layout, conductor count, route length, burial method, splice protection, and local requirements before use.