C7 Spool 500' 18" Spacing SPT-1, Green Wire

C7 Spool 500' 18" Spacing SPT-1, Green Wire

Price: $142.04
Unit price  per 
SKU: C750018-GSPT1
Shipping calculated at checkout.

Why purchase from a big box store when Christmas Light Source provides a way for customization? These light string cords can be purchased in various lengths, socket spacings, and wire color. Combined with favorite LED or incandescent bulbs, the custom combinations are almost without limit. This style of cord is what professionals use to light residential housetops and business establishments.


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

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 C7, E12, Candelabra Tail Wire N/A
Socket Spacing 18 inches Voltage 120 V
Lit Length 498 feet 6 inches Purchase Separately Incandescent or LED C7 Bulbs, Plugs (not included)
Maximum Cut Length N/A Bulbs Included No
Material PVC and Copper Warranty 90 Days of Normal Seasonal Use
Fuse Rating 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. No End Connectors.

For CA Residents: Prop 65 Notice

Warranty, shipping, and returns


All of our products are warranted for 90 days of normal, seasonal operation. See our Warranty policy page for more information.


January - July: Orders are shipped Monday - Thursday within 1-2 business days.

August - December: Orders are shipped Monday - Friday. See our Shipping status page to find out when your order will ship.


We accept returns of products in original, like-new condition within 45 days after an order is received. After receipt of return, the amount of purchase price will be credited within 5 business days. Return and original shipping charges are not refunded. See our Returns policy.

Frequently Asked Questions

What is the difference between SPT-1 and SPT-2?  The answer to a common question

How do I light my 20-foot tree? Materials list and the process

What is the difference between C7 and C9 bulbs? Compare the two

How many lights do I need for an outdoor tree?  An article to help answer this question.


Customer Reviews

Based on 8 reviews
Brendan K. (Chestnut Hill, MA)
Shipped so quickly

Great customer service and a great, quality product. Thanks very much!

Exactly what I ordered

Ordered the sturdier SPT-2. This spool along with the gilbert plugs makes it so easy to do your own xmas lights without paying every year for the professional install.

Easy to use

C7 bulb string was easy to string out and cut to fit with the plug ends. We set up 350 bulbs on our roof and they look great!


Product was excellent quality . Customer service Excellent with answering questions Very quick in shipping

David B.
Great Product

The light strand was easy to use, and we now have lights decorating 350ft of fence. This is a well made product, and it is well packaged


They are the ideal light up string for Christmas that I needed

Scott h.
Last minute decorator

Very happy with all products I purchased. Very easy to install and it showed when you said it would. Thank you.

Black is better than green

For our project we were happy to find this cord with black wire. We are decorating for an event and the black is much less noticeable than the green. Worked as expected, would purchase again. I forgot to order plugs and will remember to do that next time.

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Shipping Policy

We are currently shipping Monday - Thursday with most orders shipped within 1 business day. 

Once an order is placed it is put immediately into a shipping queue, this means we cannot cancel or modify your order once completed. If you have ordered incorrectly, you can return any uninstalled items that have been shipped to you. See our Shipping, Warranty, and Returns page for more information.

To Prevent Delays

Please double-check the address. Include a correct phone number to be used only if there is an issue with the order.  We do not ship to PO Boxes. Orders with PO Box addressing will be delayed while the customer is contacted and the address is corrected.

To prevent delays: Confirm the wire color of all items. Confirm that bulbs and cords match (for example, C7 with C7, C9 with C9, E12 bulb with E12 cord). Confirm SPT rating of cords and plugs match.

Delivery Timeframe Notices Regarding Air Orders (Excluding Holidays)

Orders placed via ground service should arrive in 1-5 business days depending on your zip code. This estimate does not include weekends or major Holidays.  

2-Day air orders shipped on Thursday do not arrive Saturday but should arrive the following Monday. Next-Day orders shipped on Friday do not arrive Saturday but should arrive the following Monday. No orders are delivered on the weekend and the weekend does not count as days in transit.

Due to these unprecedented times and high shipping volumes, UPS and FedEx do not guarantee the day and time of any method of shipping, including 2-Day and Next Day Air Service.

To ensure prompt shipping verify that your order is correct. Please do the following checks:

1. Confirm bulb bases and cord sockets match. 
2. Confirm 18 AWG wire SPT rating matches the SPT rating of plugs.
3. For bulk C7/C9 bulbs and cords orders, don't forget gilbert plugs, if required.
4. Double-check the wire color on all strings lights.