Thanks Dave for an excellent advice. After 30 years in the programming profession, I still wonder WHY manufacturers provide us with so stupidly WEAK connectors, plugs, cables and switches, while the "industrial" type are so different ! For a 10 dollar increase in a 600 dollar machine, they could provide an enormously improved quality in those devices. Don´t we deserve the same safety standards as an industrial equipment consuming a few more watts ? Yes, I know: a fire in an industrial plant would involve lost lives AND many many thousand dollars in legal claims, paralization of production and lost clients. A fire in a house instead, will mean only some lives. Don´t hesitate to check out your installation, and if possible replace it by an industrial standard.
Un abrazo - Andrés