Hope you guys don't mind me throwing a few things into this thread

don't worry, I'll be brief

GaryGnu,

I see that you have some Fluorescent fixtures that will be used. Be sure to figure the total line Volt-Amps, rather than the Lamp wattage only, when calculating the Amperes for them [or any Fluorescent or HID Lamp / Fixture].

A common formula that was used quite a bit on the older Ballasts with the typical Magnetic Reactor [non-electronic] was to add up the total lamp wattage, then multiply it by 1.25, then use that number for the line power [in this case - Volt-Amps, instead of Watts].

An example would be an older F40T12 2 lamp ballast - 80% power factor [the x1.25 reciprocal]. The total lamp wattage is 80 watts, but the total line power, in Volt-Amps [VA] is 100 VA. This makes the current drawn at least 0.83 amperes for this ballast, instead of the 0.67 amps that the lamp wattage would reflect.

I know this is a small fraction of current, but it does add up and increases with higher wattage lamps, so a circuit like this should be figured using VA calcualtions, rather than straight lamp wattage. The Ballast usually will state the line Amperes drawn at rated voltage.

On these Reactive components, when the Voltage drops lower than it's rated level, the current [Amperes] increases. On the other hand, if the voltage increases above rated level, the current decreases. It does this to keep the KVA [or just simply VA] at a constant level. There are limits to the minimum and maximum voltage, which are normally around 10% to 20% max. Keep this in mind!

The other lamps [Incandescent and Quartz Halogen] can be figured as straight true power [wattage]. In this case, there is no need to use an additional amount, like the Fluorescents did.

Formula is ExI=P, or P/E=I and also P/I=E

E is Voltage, I is Amperes, P is power.

P can be True power, in watts - when the load [lamps] are PURE RESISTANCE [an Incandescent lamp, electric water heater, and such], or can be Apparent Power, in Volt-Amps - when there is a REACTIVE load.

In any case, the total power should be considered first, such as the Fluorescent Lamps: 80W x 1.25 = 100VA. 100VA/120VAC = 0.83 Amps.

Your Incandescent lamps [65 watts each - total of 14] will draw apx. 910 watts total.

From a 120 VAC circuit, this is around 7.5 Amps [ 910 / 120 = 7.55555-].

Good luck! Hope this make sense and is of some assistance!

Scott SET