I've always just used bog standard extension leads to get from wall socket to effects power brick and powering the amp - But I need a new one and it has got me considering if I should put more thought into it like we do with isolated power from power bricks. Orange extension cables are made to be better for outdoor use, is there equivalent for perhaps insulating against causing electrical interference noise? And is surge protection needed?
Otherwise, the main things I consider are that it should be long, 4 way, tough/reliable.