**Jay**;10222101 said:
Still not sure what those acronyms mean..
Pg (propylene glycol) and Vg (vegetable glycerin) are the two major components of
e-liquid, along with liquid nicotine and flavoring agents.
Pg has the characteristic of carrying flavor more than Vg, but Vg has the characteristic of producing more vapor. Ratios are chosen depending upon which characteristic is more important to the user.
Although the safe
vaping power chart was designed more for single coil cartomizers, it can help you understand the relationship of resistance (ohms) and voltage (power) and the resulting wattage. The majority of vapors prefer
vaping in the 7 - 8 watt range (see green blocks section of the chart). This chart is only used as a guideline, and vapors should choose to adjust to taste and personal preference for each flavor/juice that they use.
I've not been a fan of dual coils and don't use them, but a 1.5 ohm dual coil actually has two 3.0 ohm coils within it, so you may need to increase the voltage as if it were a 3.0 ohm cartomizer to get satisfactory results. Someone more familiar with using dual coils can either confirm this or debunk it. I've heard it said that for a dual coil to truly shine in performance that they need more voltage than a single coil would use.