On Square-D service panels, are the main lugs rated for aluminum wire? Or do I need to use an anti-oxidant compound? What about on Milbank outdoor meter bases?
No you do not have to use any type compound on it.
Aluminum to Aluminum they say you do not need an inhibitor. I have still aways used it as has every electrical contractor I have worked for for 30 years. Utility companies use it on all meter bases as well. The oxidation can still be persistent so I suggest you use it and torque them to the manufactures labeling. So many people over tighten the conductors and this is a major problem because aluminum is very soft it does have a torque guideline for each conductor size as well as the lug it is attached to. Electrical Contractor ||