Wire Nuts vs. Lugs: Benefits of a Good Electrical Connection

When installing or connecting motor leads we at Horner do not recommended the use of “wire nuts” on anything that will see 10 amps or more. Or another way to look at it is, we do not recommended them for use on motors larger than 3 HP at 230V, or 5 HP at 460V . Ambient temperatures also need to also be considered before using a plastic based wire nut. The plastic may soften and fail if the temperatures are too high. “Lugs” that are properly crimped to the lead cable, or soldered to the cable are the best connections to [...]