question about an hps ballast

N

nickers

Active Member

• May 20, 2014

• #1

I just bought a 400 watt hps ballast that does 120/240 volt ...can I run it on 120 to power a 400 hps bulb....I just ordered it today so I dont have it till Thursday

 

vostok

Well-Known Member

• May 20, 2014

• #2

YES! ...120/240 volt does imply duel voltages

 

N

nickers

Active Member

• May 20, 2014

• #3

Ok...is there a difference in light from 120 to 240?

 

vostok

Well-Known Member

• May 20, 2014

• #4

No not at all, the input voltage 120v or the 240 is boosted in the ballast to meet the requirements for the bulb selected

 

N

nickers

Active Member

• May 20, 2014

• #5

Awesome ...cheaper electric bill....and my second tent will be complete

 

Red1966

Well-Known Member

• May 20, 2014

• #6

nickers said:

Ok...is there a difference in light from 120 to 240?

Click to expand...

You would have to use a different cord. They usually come with the 120 cord and the 240 cord must be bought separately. The light output is the same either way.

 

Red1966

Well-Known Member

• May 20, 2014

• #7

nickers said:

Awesome ...cheaper electric bill....and my second tent will be complete

Click to expand...

The 240 may or may not be slightly more efficient. Any savings on the electric bill will be very small.

 

vostok

Well-Known Member

• May 21, 2014

• #8

There is a very useful vid on you tube comparing different hps bulbs,

ps I thought ALL lights shipped for the 240v cables ...?

 

cat of curiosity

Well-Known Member

• May 21, 2014

• #9

half the voltage, twice the amperage, same amount of watts. 240v would allow you to run more on a circuit.

i use raw ballasts; i don't like to pay an extra hundred bucks for a fancy metal box...