If the dog has not previously been crate trained you might have a rough go until he/she gets used to it. Especially seeing how huskies can be rather vocal. Hopefully you don't have neighbours in close proximity.
I'm not sure if you'll read through what Terry posted, but you want to get a crate that is just big enough to fit your dog. If the crate is too big the dog will do their business at one end and sleep in the other which is obviously not effective for potty-training.
When introducing the dog to the crate, be sure to make it a pleasant experience. It you throw the dog in there, yelling and being forceful, they will come to associate the crate with an unpleasant experience.
Vary the times that you leave the dog in the crate. Anything from running out to get the mail to being at work all day. This can help to alleviate separation anxiety because the dog isn't sure whether you will be gone for 5 minutes or 8 hours.
The best thing you can do (gotta love the Dog Whisperer) if leaving the dog in a crate while you're at work is to take him for a good walk in the morning, the suggested time is at least 45 minutes. This will tire the dog and does two things. It will also alleviate the separation anxiety because more than likely he'll be sleeping, and second, it makes the dog understand why his "pack" is leaving him behind, because he is too tired to go with them.
Congratulations on taking on a rescue dog by the way, and good luck.