# Square D main panel and Cutler Hammer sub panel

**URL:** <https://forum.nachi.org/t/square-d-main-panel-and-cutler-hammer-sub-panel/84186>\
**Category:** Electrical Inspections\
**Created:** [February 2, 2014, 4:34pm UTC](https://forum.nachi.org/t/square-d-main-panel-and-cutler-hammer-sub-panel/84186 "2014-02-02T16:34:25Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**Author:** ![rcooke](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rcooke/32/57038_2.png) [@rcooke](https://forum.nachi.org/u/rcooke)\
**Post date:** [February 3, 2014, 12:42am UTC](https://forum.nachi.org/t/square-d-main-panel-and-cutler-hammer-sub-panel/84186/8 "2014-02-03T00:42:45Z")

</div>

> [@cfoley1](#):
>
> Yes good point , did they make tin covered copper in stranded? That’s good to know if they did , we concentrate so much on single strand - solid aluminum , just assumed the multi stranded type was aluminum. Probably is tin covered then.

A sharp knife and you can scratch the surface and see it is copper under the tin.  
Yes they did make tin plated stranded copper and still do

> **[This product is no longer available.](https://hnhwal.en.alibaba.com/product/616864157-215621643/Tin_Plated_Copper_Wire_for_lightning_protection.html)**
>
> This product is no longer available.

---

_[View the full topic](https://forum.nachi.org/t/square-d-main-panel-and-cutler-hammer-sub-panel/84186)._