I have a Spa heater that is 240 V 50amp. the contactor that I removed is a 2 pole. I had a contactor in my garage that is a 3 pole 240 v 50 amp. Does it matter if one of the poles is not in use on the contactor? I hooked it up leaving the center pole empty. The pressure switch and the thermostat were working before. If i depress the magnetic center manually on the contactor, I get proper voltages across the contactor however it wont automatically work. so I guess the question is... Does it matter if one of the poles is not in use on the contactor?

I'm doing a small remodeling project and as part of it, I want to add a new outlet (A) on a wall that currently only has one outlet (B) that's in a hard to reach location. It's a 15 amp circuit using 14-2 wire. The existing outlet (B) that I want to use to power the new outlet (A) already has wires going out of it to feed another outlet (C) on the circuit. Is it OK to connect this new outlet (A) to the existing outlet (B) even though it already feeds another existing outlet (C)? The new outlet (A) I bought (Legrand CRB5262-WCC12) has back and side wire connections. For the back side connections, there's 2 slots on all 4 screws, so it seems like it could send power out to 2 separate outlets. The existing outlet (B) is likely original to my house and thus 45 years old so I realize I may need to replace it with a new outlet like the Legrand I plan to use in the new outlet (A). Thanks for the help.