I'm hooking up a small whole house SPD in a full panel. (SquareD SDSA1175) I figured, throw in a 15A or 20A 2-pole breaker, tighten the clamps, done! Unfortunately, the last spare spaces in this panel were used to install a sub-panel that's about 75' of cable away. Plenty of room on the sub-panel, but I'd prefer to hook up the SPD as close to the service entry point as possible.
SquareD doesn't specify OCP for this unit on their instructions- in fact, they're showing it hardwired to the busses. I'm tempted to just piggy-back it off the 30A 2P dryer breaker. What are the rules for SPDs like this? The breakers are UL E80615, does that allow for 2 wires under the screw?
