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Christmas light supply shop

C9 Stringers

Shop empty-socket C9/E17 commercial light stringers by length, green or black wire, socket spacing, socket count, wire gauge, and SPT rating for custom rooflines and displays.

TX Merry Lights supply shop

C9 Stringers

Shop empty-socket C9/E17 commercial light stringers by length, green or black wire, socket spacing, socket count, wire gauge, and SPT rating for custom rooflines and displays.

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C9 stringer buying guide

Choose a C9 stringer by length, spacing, wire, and SPT rating

C9 stringers are empty-socket cords for E17 intermediate-base bulbs. Compare wire length, socket count, spacing, wire color, wire gauge, SPT rating, and electrical capacity before adding compatible bulbs.

Match C9 bulbs to E17 sockets

These stringers use E17 intermediate-base sockets commonly associated with C9 bulbs. Confirm the bulb base, voltage, and stringer specifications together; bulb shape alone does not establish electrical compatibility.

Length and spacing determine socket count

A 50-foot stringer with 12-inch spacing normally provides more sockets than the same length with wider spacing. Use the listed wire length, socket count, lead, tail, and spacing to plan the actual roofline layout.

Choose green or black wire for the surface

Green wire blends into trees and greenery, while black wire is often less noticeable against dark roof edges and structures. The wire color does not change the required bulb base or electrical limits.

Check SPT rating and capacity

SPT1W and SPT2W describe different insulation constructions. Follow the specific product's listed indoor/outdoor use, amperage, connection limits, and cutting instructions instead of treating every C9 stringer as interchangeable.

Before checkout

Check before ordering a C9 stringer

  • E17 intermediate-base bulb compatibility
  • Wire length, socket count, and socket spacing
  • Green or black wire
  • SPT1W or SPT2W insulation rating
  • Wire gauge, amperage, and connection capacity
  • Compatible bulbs, clips, extensions, timer, and power plan

Product questions

Answers before you order

Do C9 stringers include bulbs?

These are empty-socket stringers unless the product page explicitly says it is a complete light set. Choose compatible E17 bulbs separately and verify the package quantity for both items.

What is the difference between SPT1W and SPT2W?

They use different insulation constructions. Use the rating specified for the intended installation and follow the product's stated electrical capacity, outdoor-use listing, and connection instructions.

How many sockets are on a 50-foot C9 stringer?

It depends on socket spacing. The featured green 50-foot SPT1W stringer has 50 sockets at 12-inch spacing; other 50-foot options can have a different count.