C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire
C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire
C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire
C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire
C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire
C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire
C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire

C9 (E17) 500' Spool 18" Spacing, Green SPT-1 Wire


Regular price$157.08
Shipping calculated at checkout.

  • In stock, ready to ship
  • Inventory on the way


  • Purchase 333 bulbs to fill every socket
  • Parallel wired, cut to fit
  • Plugs not included
  • 18 AWG wiring
  • Bulbs sold separately


Please test your lights when you receive them! Everyone is happier when we resolve issues quickly.

Our warranty for all our products is 90 days of normal, seasonal use. If a product is defective or fails during the 90 days following receipt of your order, please contact us right away by replying to your order confirmation email. Please include photos of the issue and a photo of your product item number, if applicable. We will work with you to troubleshoot the problem, and if the issue is not easily and quickly resolved, we will correct the situation.

See our Warranty Policy Page for more information. 


Orders are shipped Monday - Friday. During this peak season, orders are leaving the warehouse in 1-2 business days. We are doing everything we can to process and ship orders as quickly as we can.

Orders are not shipped during the weekend or on major holidays.

See our Shipping Information Page for more information.


Like-new, uninstalled products may be returned for a credit to the form of payment used during checkout. Please reach out to us to request return instructions. Reply to your order confirmation email us via our contact page. Orders must be returned within 30 days of requesting return instructions. After receipt of the return, the amount of the purchase price should be credited within 7 business days.

Return and original shipping charges are not refunded.

See our complete Returns Policy.

Specifications and Dimensions

Do not install more than 250 continuous feet of this Christmas light spool regardless of bulb type. That is the maximum line specification for 18 AWG wire. Please consult with a licensed electrician for assistance with installation.
Please consult with a licensed electrician for assistance with installation.

Total Length 500 feet Insulation Rating SPT-1
Color of Wire and Sockets Green Wire Gauge 18 AWG
Number of Sockets 333 Lead Wire N/A
Socket Type C9, E17, Intermediate Tail Wire N/A
Socket Spacing 18 inches Voltage 120 V
Lit Length 498 feet 6 inches Purchase Separately Incandescent or LED C9 Bulbs, Plugs (not included)
Maximum Cut Length 250 feet Bulbs Included No
Material PVC and Copper Warranty 90 Days of Normal Seasonal Use
Max Current 10 Amp Additional Info 2 Weep Holes on Bottom of Socket
Usage Indoor/Outdoor Additional Info Make custom Christmas light cords by cutting to fit
Ratings CSA Rated Materials Additional Info Neither Male nor Female Plugs Included

For CA Residents: Prop 65 Notice

Questions and Answers

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Customer Reviews

Based on 21 reviews
Anonymous (Kennewick, WA)
Awesome service

First time installing so I called 3 times with questions and service was soo helpful.

Richard V. (Sheridan, WY)
2021 Xmas Light Replacement

After thinking about it for 20 years, we made the commitment to replace the light strings on our house with customized C9 LED (9-inch spacing) and C7 LED (12-inch spacing) strings. We have the C9 strings cut and installed. They look fabulous. We have the C7 strings for around windows and doors cut but ran out of Gilbert plugs(ordered more this morning). We are very pleased with the quality of the light bulbs, wiring(went with SPT-2 and am impressed with the quality - well worth the extra cost) and hardware. We also decided to add the rubber o-rings for rain and snow in Wyoming - glad we did. Ordering and receiving the lights, cords and accessories with Christmas Light Source has been seamless and timely. We went with the Gilbert plugs including the inline plugs and have greatly reduced the number of extension cords. We would highly recommend Christmas Light Source. Will send photos when we are finished. We wish everyone a Very Merry Christmas.

Nolan S. (Midlothian, TX)
Great Product

Everything arrived quickly so we could get our house decorated. Good quality products and great customer service.

Kurt C. (Boardman, OR)
very pleased

Product quality was exactly what I expected.
Customer service excellent.

David C. (Flemington, NJ)


Gilbert W. (Tucson, AZ)
500' C9 Green Light Cord

These look like their going to work well. I'm mounting them in a "W" pattern over a 110' x 110' grass field, approximately 14 feet high.

Matt W. (Green Bay, WI)

Good job

CHELSEA M. (Edmond, OK)

My husband and I are complete newbies at installing Christmas lights and this spool made it easy to cut our lights to the perfect length for our house. Shipment was VERY fast. Excited for this upcoming Holiday season!

Chris L. (San Jose, CA)
Cheaply made, but adequate

I'm not sorry I bought these, but I am disappointed in the quality. The plastic is incredibly thin and it's so easy to cross thread bulbs that it takes twice as long to screw each of the 600 of them in. I don't understand why year after year, products have to suck more and more... this C9 Spool 500' 9" Spacing SPT-1, White Wire is similar to products I've been buying for 15 years and I really wonder how long it will last. I can easily bend, crease, and crush each outlet in my thumb / finger.

Best Spool on the Market!

This spool is just what I needed. The 9 inch spacing is perfect for roof lines. The large spool allows me to have multiple lighting configurations to change to each year.

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