Perhaps you do... but you will need to FIRST share more information... certainly to me.
I have been doing electricity professionally for over 50 years... exotic large scale industrial... and small time home and EVERYTHING in between)... Loved every bit of it.
However... there are CERTAIN & appropriate codes... and a little information in lieu of ALL the NECESSARY information can be quite deadly
... for reals!
When the Nutone Heater-Vent-Lite first came out... I figured an elegant solution to keep the existing lights... (utilizing two hot wires + one neutral + one ground (14 gauge, 15 anp 3way with ground)).
Yes it can be done... but if you want a serious answer... you will have to clearly state what fan... model and application
... and I might entertain your problem... in light of NATIONAL ELECTRICAL CODES
... unless you assure me you are outside the NEC purview .. and hold EVERYONE ELSE... ABSOLUTELY & TOTALLY
HARMLESS... Indemnifying all the world.. but for yourself.
If you had asked... can that old fashioned Nutone be put on 14 gauge wire... I would have said certainly... but recent CODES no longer allow that fan to be used without a HUMIDISTAT... (whole-house fan system).
and even that MIGHT WELL BE ARGUABLE with YOUR LOCAL ELECTRICAL ENGINEERS / INSPECTORS.
national electrical code 2014
Wiring Simplified: Based on the 2014 National Electrical Code® Fourty fourth Edition > http://www.amazon.com/Wiring-Simplified-Based-National-Electrical/dp/097929455X
NEC 2014 National Electrical Code 2014 NFPA 70 Anglais Broch 1 octobre 2013 NFPA 70 National Electrical Code NEC 2014 Edition 1st Edition