---
title: Explaining UL/CSA Approvals for the Manufacture of Power Cords
description: A manufacturer must provide samples of each different cord set configuration to the designated test facility for UL/CSA. With the submission of each
image: https://www.almorpowercables.com/hubfs/Almor_Power_Cables_March_2017/Images/Almor_092413-4070-259x188.jpg
---

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# Explaining UL/CSA Approvals for the Manufacture of Power Cords

# Explaining UL/CSA Approvals for the Manufacture of Power Cords

![Blog](https://www.almorpowercables.com/hubfs/Almor_Power_Cables_March_2017/Images/tested.png)

## **Every Almor Cord is 100% tested** for continuity, polarity, dielectric withstanding voltage & insulation resistance!

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[![](https://www.almorpowercables.com/hubfs/Almor_Power_Cables_March_2017/Images/Almor_092413-4070-259x188.jpg) ](https://www.almorpowercables.com/blog/explaining-ul-csa-approvals)

 Jan 29, 2015

A manufacturer must provide samples of each different cord set configuration to the designated test facility for UL/CSA. With the submission of each configuration, the supplier must provide a bill of materials that identifies each component part of the whole cord set. As an example, the cordage, the resin used to mold the male/female receptacles, the ground contacts and blades, and strain relief configuration. The suppliers of each of these components that make up a complete cord set, must also have UL/CSA approvals, and have gone through testing programs.

Once the finished cord set is sent to UL/CSA for testing, the cord set is subject to the following tests that might include the following.

1. **Pull Test** - The cord set is placed in an oven for seven days @ 100 deg. C. Then, a weight is applied to test the “pull out” strength of the blade/contact assembly

2. **Strain Relief** - An 18 AWG cord set is subjected to a 30 lb. dead weight attached to the strain relief to see if it separates from the cord.

3. **Additional Testing:** Flex Test, Dielectric Voltage Test Blade pull test at elevated temperatures.

Once the testing is approved, the cord sets, bill of material/components become part of a UL/CSA file, assigned a number, and become part of the record.

An unannounced quarterly visit by a UL/CSA field inspector at the manufacturer’s facility examines the component part list in production, and verifies that the cord set being manufactured meets the UL/CSA file that was approved. This avoids the potential of a manufacturer to substitute inferior contacts, resin, or cordage to improve margin, while bypassing the “tested” cord set.

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