comments:
devinhedge posted on r/askelectricians6d
If you are really concerned: get the Ugly's book. https://www.amazon.com/Uglys-Electrical-References-Charles-Miller/dp/1284315754/ref=pd_aw_fbt_m_sccl_1_2/138-2471227-2061842?pd_rd_w=91eFC&content-id=amzn1.sym.7766b57a-a0a0-4f33-935d-91822a4c15c0&pf_rd_p=7766b57a-a0a0-4f33-935d-91822a4c15c0&pf_rd_r=KND4BS7F130PGRPMMPJS&pd_rd_wg=oli0U&pd_rd_r=2693b836-6a78-4327-8150-be8fae5c8f42&pd_rd_i=1284315754&psc=1