ECN Forum Forums General Topics of the Trade General Discussion Area dimming lights

drgnz23,
Welcome to ECN mate!.
It sounds to me like the mains to the panel are too small to supply the in-rush current of these appliances when they start up, causing the drop in voltage and hence the dimming lights.
I'd advise you to get the size of the service and the sub-circuit wiring checked.
Hope this helps.