Hello all, I know the voltage between L1 and L2 is 220VAC. While the voltage between T1 and T2 is 220VAC if the contactor is engaged. When the contactor is bad, the voltage between the L1 and T1 is 242VAC. Can someone tell me why? Thank you

I have a central Florida garage with a dehumidifier in it that drains its condensed moisture into a utility sink so the humidity in the garage does not rise above ~50%. I am considering installing an exhaust fan in the ceiling that will vent the hot, dryish room air into an insulated, hot attic. The roof has ridge and soffit vents. The exhaust fan would turn on only when the temp is above 90 degrees at ceiling level. I read cautions on this forum about the problems of MOIST air, like from a bathroom exhaust fan, being sent into the attic causing mold/mildew, etc. I would not be sending "moist" air; I would be sending hot, dryer air into the attic. In fact, might that 50% RH exhaust actually lower the relative humidity in the attic? Related to that, I read what to me were counter intuitive warnings about sending hot room air conditioner exhaust air into the attic. The presumption was that a room AC expels moist air. Does it really? Isn't it true that an AC acts also as a dehumidifier and expels condensate room moisture down a separate drain line, and dryer, hot air out is expelled out its rear exhaust? Wouldn't it then make sense that the exhaust air would also be hot and dry like that of a dehumidifier. If that's the case, why would expelling that air into the attic be a problem in the same 50% humidity room environment?