Told I need 250 mcm R-90 cable
What is the cost per ft to purchase cable

Help us out here. Please let me know what you are trying to do.

Can you give us a better description such as who told you, an electrician, a friend, a clerk at Lowe's?

What is the one way distance that you need? Above or Below Ground?

Where are you located?

I haven't found any local source for Type "R" cable.

Edmonton, alberta

Electrician
Repair electrical service
4 feeds- each 35 ft- underground through condiut from transformer to service panel

We do not sell what your looking for.

Try an electrical distributor to find out price on the cable, or a website that sells the product your looking for.

Here is one:

Draka Cableteq USA | Lifeline 2-Hour Fire Rated Electrical Cables for Critical Circuit Protection